ANSI/ASHRAE Addendum f to
`ANSI/ASHRAE Standard 34-2019
`
`Designation and
`Safety Classification of
`Refrigerants
`
`Approved by the ASHRAE Standards Committee on October 16, 2019; by the ASHRAE Board of Directors on November 15,
`2019; and by the American National Standards Institute on December 12, 2019.
`
`This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee has
`established a documented program for regular publication of addenda or revisions, including procedures for timely, docu-
`mented, consensus action on requests for change to any part of the standard. Instructions for how to submit a change can
`be found on the ASHRAE® website (https://www.ashrae.org/continuous-maintenance).
`
`The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) or from
`ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: orders@ashrae.org. Fax: 678-539-
`2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For reprint per-
`mission, go to www.ashrae.org/permissions.
`
`© 2019 ASHRAE
`
` ISSN 1041-2336
`
`Dynatemp EX1045
`Page 1 of 18
`
`

`

`ASHRAE Standing Standard Project Committee 34
`Cognizant TC: 3.1, Refrigerants and Secondary Coolants
`SPLS Liaison: Charles S. Barnaby
`Staff Liaison: Brian C. Cox
`
`Sean Cunningham*, Chair
`Stephen Kujak*, Vice-Chair
`Paul H. Dugard
`Brian A. Fricke
`Gary W. Jepson*
`Sarah Kim*
`Mary E. Koban
`Tatsuro Kobayashi
`Jay A. Kohler*
`William Kopko
`Andrew Kusmierz*
`
`Evan Laganis
`Thomas J. Leck
`Bob Low
`Zidu Ma*
`Julie Majurin*
`Angel Mendez
`Mark M. Olson
`Chun-cheng Piao*
`Robert G. Richard
`George M. Rusch
`Marc Scancarello*
`
`Christopher J. Seeton*
`John Senediak*
`Ankit Sethi
`Valerie Shultz
`Eric M. Smith*
`Elyse Sorenson
`Jian Sun-Blanks
`Kenji Takizawa*
`Douglas K. Tucker
`Samuel F. Yana-Motta*
`
` * Denotes members of voting status when the document was approved for publication
`
`ASHRAE STANDARDS COMMITTEE 2019–2020
`
`Wayne H. Stoppelmoor, Jr., Chair
`Drury B. Crawley, Vice-Chair
`Els Baert
`Charles S. Barnaby
`Niels Bidstrup
`Robert B. Burkhead
`Thomas E. Cappellin
`Douglas D. Fick
`Michael W. Gallagher
`Walter T. Grondzik
`
`Susanna S. Hanson
`Rick M. Heiden
`Jonathan Humble
`Srinivas Katipamula
`Essam E. Khalil
`Kwang Woo Kim
`Larry Kouma
`Cesar L. Lim
`Karl L. Peterman
`Erick A. Phelps
`
`Steven C. Ferguson, Senior Manager of Standards
`
`Lawrence J. Schoen
`Steven C. Sill
`Richard T. Swierczyna
`Christian R. Taber
`Russell C. Tharp
`Adrienne G. Thomle
`Michael W. Woodford
`Craig P. Wray
`Jaap Hogeling, BOD ExO
`Malcolm D. Knight, CO
`
`SPECIAL NOTE
`This American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is defined
`by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as
`“substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority,
`but not necessarily unanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.”
`Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation.
`ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.
`ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project
`Committee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, all
`must be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees.
`The Senior Manager of Standards of ASHRAE should be contacted for
`a. interpretation of the contents of this Standard,
`b. participation in the next review of the Standard,
`c. offering constructive criticism for improving the Standard, or
`d. permission to reprint portions of the Standard.
`
`DISCLAIMER
`ASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and accepted
`industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systems
`tested, installed, or operated in accordance with ASHRAE’s Standards or Guidelines or that any tests conducted under its Standards or Guidelines
`will be nonhazardous or free from risk.
`
`ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDS
`ASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, by
`suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information
`that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformance
`to them is completely voluntary.
`In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied,
`that the product has been approved by ASHRAE.
`
`ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
`ANSI is a registered trademark of the American National Standards Institute.
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 2 of 18
`
`

`

`(This foreword is not part of this standard. It is merely informative and does not contain
`requirements necessary for conformance to the standard. It has not been processed
`according to the ANSI requirements for a standard and may contain material that has
`not been subject to public review or a consensus process. Unresolved objectors on infor-
`mative material are not offered the right to appeal at ASHRAE or ANSI.)
`
`FOREWORD
`Addendum f adds LFL data to Tables 4-1 and 4-2.
`Note: In this addendum, changes to the current standard are indicated in the text by under-
`lining (for additions) and strikethrough (for deletions) unless the instructions specifically men-
`tion some other means of indicating the changes.
`
`Addendum f to Standard 34-2019
`
`Modify Tables 4-1 and 4-2 as shown. NOTE: Values in bold reflect changes made to the
`table by Addendum c to the 2019 edition.
`
`
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`1
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 3 of 18
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`

`

`2
`
`Table 4-1 Refrigerant Data and Safety Classifications
`
`Refrigerant
`Number
`
`Methane Series
`
`11
`
`12
`
`12B1
`
`13
`
`13B1
`
`14e
`
`21
`
`22
`
`Chemical Namea,b
`
`Chemical Formulaa
`
`OELf,
`ppm v/v
`
`Safety
`Group
`
`RCLc
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic or
`Toxicd Under Code
`Classification
`
`trichlorofluoromethane
`
`dichlorodifluoromethane
`
`bromochlorodifluoromethane
`
`chlorotrifluoromethane
`
`bromotrifluoromethane
`
`CCl3F
`
`CCl2F2
`
`CBrClF2
`
`CClF3
`
`CBrF3
`
`tetrafluoromethane (carbon tetrafluoride) CF4
`
`dichlorofluoromethane
`
`chlorodifluoromethane
`
`CHCl2F
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`A1
`
`A1
`
`Al
`
`Al
`
`Al
`
`B1
`
`1100
`
`18,000
`
`0.39
`
` 5.6
`
`110,000
`
`59,000
`
`25
`
`13
`
`6.1
`
`90
`
`400
`
`210
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Toxic
`
`Neither
`
`23
`
`30
`
`31
`
`32
`
`40
`
`41
`
`50
`
`trifluoromethane
`
`dichloromethane (methylene chloride)
`
`chlorofluoromethane
`
`difluoromethane (methylene fluoride)
`
`chloromethane (methyl chloride)
`
`fluoromethane (methyl fluoride)
`
`methane
`
`CHClF2
`
`CHF3
`
`CH2Cl2
`
`CH2ClF
`
`CH2F2
`
`CH3Cl
`
`CH3F
`
`CH4
`
`Ethane Series
`
`113
`
`1,1,2-trichloro-1,2,2-trifluoroethane
`
`CCl2FCClF2
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`Al
`
`Al
`
`B1
`
`A2L
`
`B2
`
`A3
`
`A1
`
`41,000
`
`7.3
`
`120
`
`36,000
`
`4.8
`
`77
`
`144,000
`
`19.1
`
`306
`
`50,000
`
`2600
`
`1.2
`
`20
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Toxic
`
`Neither
`
`Neither
`
`Neither
`
`114
`
`1,2-dichloro-1,1,2,2-tetrafluoroethane
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`CCIF2CClF2
`a. The chemical name and chemical formula are not part of this standard. Chemical names conform to IUPAC nomenclature6,7 except where shortened, unambiguous names are used following ASHRAE Standard 34 convention.
`b. The preferred chemical name is followed by the popular name in parentheses.
`c. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`d. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups1,2,3.
`e. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`f. The OELs are eight-hour TWAs, as defined in Section 3, unless otherwise noted; a “C” designation denotes a ceiling limit.
`g. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112,000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`
`1000
`
`A1
`
`20,000
`
`8.7
`
`140
`
`Neither
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 4 of 18
`
`

`

`Table 4-1 Refrigerant Data and Safety Classifications (Continued)
`
`Refrigerant
`Number
`
`115g
`
`116e
`
`123
`
`124
`
`125e
`
`134a
`
`141b
`
`142b
`
`Chemical Namea,b
`
`chloropentafluoroethane
`
`hexafluoroethane
`
`2,2-dichloro-1,1,1-trifluoroethane
`
`2-chloro-1,1,1,2-tetrafluoroethane
`
`pentafluoroethane
`
`1,1,1,2-tetrafluoroethane
`
`1,1-dichloro-1-fluoroethane
`
`1-chloro-1,1-difluoroethane
`
`Chemical Formulaa
`
`OELf,
`ppm v/v
`
`Safety
`Group
`
`RCLc
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic or
`Toxicd Under Code
`Classification
`
`CClF2CF3
`
`CF3CF3
`
`CHCl2CF3
`
`CHClFCF3
`
`CHF2CF3
`
`CH2FCF3
`
`CH3CCl2F
`
`CH3CClF2
`
`1000
`
`1000
`
`50
`
`1000
`
`1000
`
`1000
`
`500
`
`1000
`
`A1
`
`A1
`
`B1
`
`A1
`
`A1
`
`A1
`
`120,000
`
`97,000
`
`9100
`
`10,000
`
`75,000
`
`50,000
`
`2600
`
`A2
`
` 20,000
`
`47
`
`34
`
`3.5
`
`3.5
`
`23
`
`13
`
`0.78
`
`5.1
`
`760
`
`550
`
`57
`
`56
`
`370
`
`210
`
`12
`
`82
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`60,000
`
`80,000
`
`82,000
`
`17.8
`
`20.4
`
`17.5
`
`287
`
`329
`
`282
`
`143a
`
`152a
`
`170
`
`Ethers
`
`E170
`
`Propane
`
`218e
`
`227eae
`
`236fa
`
`245fa
`
`1,1,1-trifluoroethane
`
`1,1-difluoroethane
`
`ethane
`
`CH3CF3
`
`CH3CHF2
`
`CH3CH3
`
`methoxymethane (dimethyl ether)
`
`CH3OCH3
`
`octafluoropropane
`
`1,1,1,2,3,3,3-heptafluoropropane
`
`1,1,1,3,3,3-hexafluoropropane
`
`1,1,1,3,3-pentafluoropropane
`
`CF3CF2CF3
`
`CF3CHFCF3
`
`CF3CH2CF3
`
`CHF2CH2CF3
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`300
`
`A2L
`
`A2
`
`A3
`
`A3
`
`A1
`
`A1
`
`A1
`
` B1
`
`21,000
`
`12,000
`
`7000
`
`4.4
`
`2.0
`
`0.54
`
`70
`
`32
`
`8.6
`
`48,000
`
`31,000
`
`8500
`
`1.0
`
`16
`
`34,000
`
`8.1
`
`2.4
`
`4.0
`
`130
`
` 38
`
`Neither
`
`Neither
`
` 64
`
`Neither
`
`90,000
`
`84,000
`
` 55,000
`
`34,000
`
`43
`
`36
`
`21
`
`12
`
`690
`
`580
`
` 340
`
`190
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`290
`
`propane
`
`CH3CH2CH3
`a. The chemical name and chemical formula are not part of this standard. Chemical names conform to IUPAC nomenclature6,7 except where shortened, unambiguous names are used following ASHRAE Standard 34 convention.
`b. The preferred chemical name is followed by the popular name in parentheses.
`c. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`d. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups1,2,3.
`e. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`f. The OELs are eight-hour TWAs, as defined in Section 3, unless otherwise noted; a “C” designation denotes a ceiling limit.
`g. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112,000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`
`1000
`
`A3
`
`5300
`
`0.59
`
`9.5
`
`21,000
`
`2.4
`
` 38
`
`Neither
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`3
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 5 of 18
`
`

`

`4
`
`Table 4-1 Refrigerant Data and Safety Classifications (Continued)
`
`Refrigerant
`Number
`
`Chemical Namea,b
`
`Chemical Formulaa
`
`OELf,
`ppm v/v
`
`Safety
`Group
`
`RCLc
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic or
`Toxicd Under Code
`Classification
`
`Cyclic Organic Compounds
`
`C318
`
`octafluorocyclobutane
`
`-(CF2)4-
`
`1000
`
`A1
`
`80,000
`
`41
`
`650
`
`Miscellaneous Organic Compounds
`
`hydrocarbons
`
`600
`
`600a
`
`601
`
`butane
`
`2-methylpropane (isobutane)
`
`pentane
`
`CH3CH2CH2CH3
`
`CH(CH3)2CH3
`
`1000
`
`1000
`
`A3
`
`A3
`
`A3
`
`1000
`
`4000
`
`1000
`
`0.15
`
`0.59
`
`0.18
`
`2.4
`
`9.5
`
`2.9
`
`20,000
`
`16,000
`
`12,000
`
`3.0
`
`2.4
`
`2.2
`
`48
`
`38
`
`35
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`600
`
`600
`
`400
`
`100
`
`601a
`
`2-methylbutane (isopentane)
`
`oxygen compounds
`
`CH3CH2CH2CH2CH3
`
`(CH3)2CHCH2CH3
`
`610
`
`611
`
`ethoxyethane (ethyl ether)
`
`methyl formate
`
`CH3CH2OCH2CH3
`
`HCOOCH3
`
`sulfur compounds
`
`620
`
`(Reserved for future assignment)
`
`Nitrogen Compounds
`
`630
`
`631
`
`methanamine (methyl amine)
`
`ethanamine (ethyl amine)
`
`CH3NH2
`
`CH3CH2(NH2)
`
`Inorganic Compounds
`
`702
`
`704
`
`hydrogen
`
`helium
`
`H2
`
`He
`
`A3
`
`1000
`
`0.18
`
`2.9
`
`13,000
`
`2.4
`
`38
`
`Neither
`
`B2
`
`A3
`
`A1
`
`Neither
`
`Neither
`
`Toxic
`
`Neither
`
`Neither
`
`Neither
`
`717
`
`ammonia
`
`25
`
`B2L
`
`320
`
`NH3
`a. The chemical name and chemical formula are not part of this standard. Chemical names conform to IUPAC nomenclature6,7 except where shortened, unambiguous names are used following ASHRAE Standard 34 convention.
`b. The preferred chemical name is followed by the popular name in parentheses.
`c. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`d. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups1,2,3.
`e. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`f. The OELs are eight-hour TWAs, as defined in Section 3, unless otherwise noted; a “C” designation denotes a ceiling limit.
`g. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112,000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`
`0.014
`
`0.22
`
`167,000
`
`7.2
`
`116
`
`Neither
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 6 of 18
`
`

`

`Table 4-1 Refrigerant Data and Safety Classifications (Continued)
`
`Refrigerant
`Number
`
`Chemical Namea,b
`
`Chemical Formulaa
`
`OELf,
`ppm v/v
`
`Safety
`Group
`
`RCLc
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic or
`Toxicd Under Code
`Classification
`
`718
`
`720
`
`728
`
`732
`
`740
`
`744
`
`744A
`
`764
`
`water
`
`neon
`
`nitrogen
`
`oxygen
`
`argon
`
`carbon dioxide
`
`nitrous oxide
`
`sulfur dioxide
`
`H2O
`
`Ne
`
`N2
`
`O2
`
`Ar
`
`CO2
`
`N2O
`
`SO2
`
`Unsaturated Organic Compounds
`
`1130(E)
`
`1132a
`
`trans-1,2-dichloroethene
`
`1,1-difluoroethylene
`
`CHCl=CHCl
`
`CF2=CH2
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`B1
`
`B2
`
`A2
`
`5000
`
`200
`
`500
`
`30,000
`
`3.4
`
`54
`
`1000
`
`13,000
`
`0.25
`
`2.0
`
`4
`
`33
`
`65,000
`
`50,000
`
`16
`
`8.1
`
`258
`
`131
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`1150
`
`ethene (ethylene)
`
`CH2=CH2
`
`1224yd(Z)
`
`(Z)-1-chloro-2,3,3,3-tetrafluoropropene
`
`CF3CF=CHCl
`
`1233zd(E)
`
`trans-1-chloro-3,3,3-trifluoro-1-propene
`
`CF3CH=CHCl
`
`1234yf
`
`2,3,3,3-tetrafluoro-1-propene
`
`1234ze(E)
`
`trans-1,3,3,3-tetrafluoro-1-propene
`
`1270
`
`propene (propylene)
`
`CF3CF=CH2
`
`CF3CH=CFH
`
`CH3CH=CH2
`
`1336mzz(E)
`
`trans-1,1,1,4,4,4-hexafluoro-2-butene
`
`CF3CH=CHCF3
`
`200
`
`1000
`
`800
`
`500
`
`800
`
`500
`
`400
`
`A3
`
`A1
`
`A1
`
`A2L
`
`A2L
`
`A3
`
`A1
`
`60,000
`
`16,000
`
`16,000
`
`16,000
`
`1000
`
`7200
`
`23
`
`5.3
`
`4.5
`
`4.7
`
`0.11
`
`3.0
`
`370
`
`85
`
`75
`
`76
`
`1.7
`
`48
`
`31,000
`
`2.2
`
`36
`
`62,000
`
`65,000
`
`27,000
`
`18.0
`
`18.8
`
`2.9
`
`289
`
`303
`
`46
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`1336mzz(Z)
`
`cis-1,1,1,4,4,4-hexaflouro-2-butene
`
`500
`
`A1
`
`13,000
`
`CF3CHCHCF3
`a. The chemical name and chemical formula are not part of this standard. Chemical names conform to IUPAC nomenclature6,7 except where shortened, unambiguous names are used following ASHRAE Standard 34 convention.
`b. The preferred chemical name is followed by the popular name in parentheses.
`c. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`d. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups1,2,3.
`e. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`f. The OELs are eight-hour TWAs, as defined in Section 3, unless otherwise noted; a “C” designation denotes a ceiling limit.
`g. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112,000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`
`5.2
`
`84
`
`Neither
`
`5
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 7 of 18
`
`

`

`6
`
`Table 4-2 Data and Safety Classifications for Refrigerant Blends
`
`Composition (Mass%)
`
`Composition Tolerances
`
`OELh,
`ppm v/v
`
`Safety
`Group
`
`RCLa
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic
`or Toxicf Under
`Code Classification
`
`Refrigerant
`Number
`
`Zeotropes
`
`400
`
`R-12/114 (must be specified)
`
` (50.0/50.0)
`
` (60.0/40.0)
`
`401A
`
`401B
`
`401C
`
`R-22/152a/124 (53.0/13.0/34.0)
`
`(±2.0/+0.5, –1.5/±1.0)
`
`R-22/152a/124 (61.0/11.0/28.0)
`
`(±2.0/+0.5, –1.5/±1.0)
`
`R-22/152a/124 (33.0/15.0/52.0)
`
`(±2.0/+0.5, –1.5/±1.0)
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`28,000
`
`30,000
`
`27,000
`
`30,000
`
`20,000
`
`66,000
`
`10
`
`11
`
`6.6
`
`7.2
`
`5.2
`
`17
`
`160
`
`170
`
`110
`
`110
`
`84
`
`270
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`402A
`
`402B
`
`403A
`403Bg
`404Ai
`
`405A
`
`406A
`407Ag
`
`R-125/290/22 (60.0/2.0/38.0)
`
`R-125/290/22 (38.0/2.0/60.0)
`
`R-290/22/218 (5.0/75.0/20.0)
`
`R-290/22/218 (5.0/56.0/39.0)
`
`(±2.0/+0.1, –1.0/±2.0)
`
`(±2.0/+0.1, –1.0/±2.0)
`
`(+0.2, –2.0/±2.0/±2.0)
`
`(+0.2, –2.0/±2.0/±2.0)
`
`R-125/143a/134a (44.0/52.0/4.0)
`
`(±2.0/±1.0/±2.0)
`
`R-22/152a/142b/C318 (45.0/7.0/5.5/42.5)
`
`Individual components =
`(±2.0/±1.0/±1.0/±2.0); sum of R-152a
`and R-142b = (+0.0, –2.0)
`
`R-22/600a/142b (55.0/4.0/41.0)
`
`R-32/125/134a (20.0/40.0/40.0)
`
`(±2.0/±1.0/±1.0)
`
`(±2.0/±2.0/±2.0)
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`A1
`
`A2
`
`A1
`
`A1
`
`A2
`
`A1
`
`63,000
`
`33,000
`
`68,000
`
`130,000
`
`57,000
`
`21,000
`
`83,000
`
`15
`
`7.6
`
`18
`
`31
`
`16
`
`4.7
`
`19
`
`240
`
`120
`
`290
`
`500
`
`260
`
`75
`
`300
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`82,000 l
`
`18.8 l
`
`301.9 l Neither
`
`Neither
`
`a. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`b. Azeotropic refrigerants exhibit some segregation of components at conditions of temperature and pressure other than those at which they were formulated. The extent of segregation depends on the particular azeotrope and hardware system configuration.
`c. The exact composition of this azeotrope is in question, and additional experimental studies are needed.
`d. R-507, R-508, and R-509 are allowed alternative designations for R-507A, R-508A, and R-509A due to a change in designations after assignment of R-500 through R-509. Corresponding changes were not made for R-500 through R-506.
`e. The RCL values for these refrigerant blends are approximated in the absence of adequate data for a component comprising less than 4% m/m of the blend and expected to have only a small influence in an acute, accidental release.
`f. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups 1,2,3.
`g. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`h. The OELs are eight-hour TWAs as defined in Section 3 unless otherwise noted; a “C” designation denotes a ceiling limit.
`i. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112, 000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`j. LFL is based on WCF @23°C (73.4°F) unless otherwise noted.
`k. WCFF LFL @60°C (140°FF)
`l. WCFF LFL @23°C (73.4°F)
`m. WCF LFL @100°C (212°F)
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 8 of 18
`
`

`

`Table 4-2 Data and Safety Classifications for Refrigerant Blends (Continued)
`
`Refrigerant
`Number
`407Bg
`407Cg
`
`407D
`407Eg
`
`407F
`
`407G
`
`407H
`
`Composition (Mass%)
`
`Composition Tolerances
`
`R-32/125/134a (10.0/70.0/20.0)
`
`R-32/125/134a (23.0/25.0/52.0)
`
`R-32/125/134a (15.0/15.0/70.0)
`
`R-32/125/134a (25.0/15.0/60.0)
`
`R-32/125/134a (30.0/30.0/40.0)
`
`R-32/125/134a (2.5/2.5/95.0)
`
`R-32/125/134a (32.5/15.0/52.5)
`
`(±2.0/±2.0/±2.0)
`
`(±2.0/±2.0/±2.0)
`
`(±2.0/±2.0/±2.0)
`
`(±2.0/±2.0/±2.0)
`
`(±2.0/±2.0/±2.0)
`
`(±0.5/±0.5/±1.0)
`
`(±1.0/±1.0/±2.0)
`
`OELh,
`ppm v/v
`
`Safety
`Group
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`RCLa
`
`LFL
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`(ppm v/v)
`
`(lb/Mcf)
`
`(g/m3)
`
`Highly Toxic
`or Toxicf Under
`Code Classification
`
`79,000
`
`81,000
`
`68,000
`
`80,000
`
`95,000
`
`52,000
`
`92,000
`
`71,100
`
`21
`
`18
`
`16
`
`17
`
`20
`
`13
`
`19
`
`16
`
`330
`
`290
`
`250
`
`280
`
`320
`
`210
`
`300
`
`250
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`407I
`408Ag
`
`409A
`
`409B
`410Ai
`410Bi
`411Ae
`411Be
`
`412A
`
`413A
`
`R-32/125/134a (19.5/8.5/72.0)
`
`(+1.0, –2.0/+2.0, –1.0/±2.0)
`
`R-125/143a/22 (7.0/46.0/47.0)
`
`R-22/124/142b (60.0/25.0/15.0)
`
`R-22/124/142b (65.0/25.0/10.0)
`
`R-32/125 (50.0/50.0)
`
`R-32/125 (45.0/55.0)
`
`(±2.0/±1.0/±2.0)
`
`(±2.0/±2.0/±1.0)
`
`(±2.0/±2.0/±1.0)
`
`(+0.5, –1.5/+1.5, –0.5)
`
`(±1.0/±1.0)
`
`R-1270/22/152a (1.5/87.5/11.0)
`
`(+0.0, –1.0/+2.0, –0.0/+0.0, –1.0)
`
`R-1270/22/152a (3.0/94.0/3.0)
`
`(+0.0, –1.0/+2.0, –0.0/+0.0, –1.0)
`
`R-22/218/142b (70.0/5.0/25.0)
`
`(±2.0/±2.0/±1.0)
`
`R-218/134a/600a (9.0/88.0/3.0)
`
`(±1.0/±2.0/+0.0, –1.0)
`
`1000
`
`1000
`
`1000
`
`1000
`
`1000
`
`970
`
`940
`
`1000
`
`1000
`
`A1
`
`A1
`
`A1
`
`A1
`
`A1
`
`A2
`
`A2
`
`A2
`
`A2
`
`94,000
`
`29,000
`
`30,000
`
`140,000
`
`140,000
`
`14,000
`
`13,000
`
`22,000
`
`22,000
`
`21
`
`7.1
`
`7.3
`
`26
`
`27
`
`2.9
`
`2.8
`
`5.1
`
`5.8
`
`330
`
`110
`
`120
`
`420
`
`430
`
`46
`
`45
`
`82
`
`93
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`
`Neither
`185.6 k Neither
`238.3 k Neither
`328.6 k Neither
`374.9 k Neither
`
`55,000 k
`70,000 k
`87,000 k
`88,000 k
`
`11.6 k
`14.8 k
`20.5 k
`23.4 k
`
`a. Data taken from J.M. Calm, “ARTI Refrigerant Database,” Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, July 2001; J.M. Calm, “Toxicity Data to Determine Refrigerant Concentration Limits,” Report DE/CE 23810-
`110, Air- Conditioning and Refrigeration Technology Institute (ARTI), Arlington, VA, September 2000; J.M. Calm, “The Toxicity of Refrigerants,” Proceedings of the 1996 International Refrigeration Conference, Purdue University, West Lafayette,
`IN, pp. 157–62, 1996; D.P. Wilson and R.G. Richard, “Determination of Refrigerant Lower Flammability Limits (LFLs) in Compliance with Proposed Addendum p to ANSI/ASHRAE Standard 34-1992 (1073-RP),” ASHRAE Transactions 2002, 108(2);
`D.W. Coombs, “HFC-32 Assessment of Anesthetic Potency in Mice by Inhalation,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, February 2004 and amendment February 2006; D.W. Coombs, “HFC-22 An Inhalation Study
`to Investigate the Cardiac Sensitization Potential in the Beagle Dog,” Huntingdon Life Sciences Ltd., Huntingdon, Cambridgeshire, England, August 2005; and other toxicity studies.
`b. Azeotropic refrigerants exhibit some segregation of components at conditions of temperature and pressure other than those at which they were formulated. The extent of segregation depends on the particular azeotrope and hardware system configuration.
`c. The exact composition of this azeotrope is in question, and additional experimental studies are needed.
`d. R-507, R-508, and R-509 are allowed alternative designations for R-507A, R-508A, and R-509A due to a change in designations after assignment of R-500 through R-509. Corresponding changes were not made for R-500 through R-506.
`e. The RCL values for these refrigerant blends are approximated in the absence of adequate data for a component comprising less than 4% m/m of the blend and expected to have only a small influence in an acute, accidental release.
`f. Highly toxic, toxic, or neither, where highly toxic and toxic are as defined in the International Fire Code, Uniform Fire Code, and OSHA regulations, and neither identifies those refrigerants having lesser toxicity than either of those groups 1,2,3.
`g. At locations with altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`h. The OELs are eight-hour TWAs as defined in Section 3 unless otherwise noted; a “C” designation denotes a ceiling limit.
`i. At locations with altitudes higher than 3300 ft (1000 m) but below or equal to 4920 ft (1500 m), the ODL and RCL shall be 112, 000 ppm, and at altitudes higher than 4920 ft (1500 m), the ODL and RCL shall be 69,100 ppm.
`j. LFL is based on WCF @23°C (73.4°F) unless otherwise noted.
`k. WCFF LFL @60°C (140°FF)
`l. WCFF LFL @23°C (73.4°F)
`m. WCF LFL @100°C (212°F)
`
`ANSI/ASHRAE Addendum f to ANSI/ASHRAE Standard 34-2019
`
`7
`
`© ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either
`print or digital form is not permitted without ASHRAE's prior written permission.
`
`Dynatemp EX1045
`Page 9 of 18
`
`

`

`8
`
`Table 4-2 Data and Safety Classifications for Refrigerant Blends (Continued)
`
`Refrigerant
`Number
`
`414A
`
`414B
`
`415A
`
`415B
`416Ae
`417Ae
`
`417B
`
`Composition (Mass%)
`
`Composition Tolerances
`
`R-22/124/600a/142b (51.0/28.5/4.0/16.5)
`
`(±2.0/±2.0/±0.5/+0.5, –1.0)
`
`R-22/124/600a/142b (50.0/39.0/1.5/9.5)
`
`(±2.0/±2.0/±0.5/+0.5, –1.0)
`
`R-22/152a (82.0/18.0)
`
`R-22/152a (25.0/75.0)
`
`(±1.0/±1.0)
`
`(±1.0/±1.0)
`
`R-134a/124/600 (59.0/39.5/1.5)
`
`(+0.5, –1.0/+1.0, –0.5/+1.0, –0.2)
`
`R-125/134a/600 (46.6/50.0/3.4)
`
`(±1.1/±1.0/+0.1, –0.4)
`
`R-125/134a/600 (79.0/18.3/2.7)
`
`(±1.0/±1