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What is NYC MC § 1103.1?

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This section classifies refrigerants according to ASHRAE 34, providing a detailed table of refrigerant data and safety classifications. The classification includes chemical names, formulas, and safety groups. Applies to building owners and operators using refrigerants in HVAC systems.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1103.1 Refrigerant classification.

MC § 1103.1

Refrigerants shall be classified in accordance with ASHRAE 34 as listed in Table 1103.1. Table 1103.1Refrigerant Data and Safety Classifications a Refrigerant NumberChemical NameChemical FormulaOEL dppm v/vSafety c GroupRCL(ppm v/v)(g/m 3 )Ib/McfRefrigerant NumberChemical NameChemical FormulaOEL dppm v/vSafety c GroupRCL(ppm v/v)(g/m 3 )Ib/McfMethane Series11 btrichlorofluoromethaneCCl3FC1000A11,1006.2.3912 bdichlorodifluoromethaneCCl2F21,000A118,000905.613 bchlorotrifluoromethaneCClF31,000A1---13B1 bbromotrifluoromethaneCBrF31,000A1---14tetrafluoromethane (carbon tetrafluoride)CF41,000A1110,0004002521dichlorofluoromethaneCHCl2F-B1---22chlorodifluoromethaneCHClF21,000A159,0002101323trifluoromethaneCHF31,000A141,0001207.330dichloromethane (methylene chloride)CH2Cl2-B2---32difluoromethane (methylene fluoride)CH2F21,000A2L36,000774.840chloromethane (methyl chloride)CH3Cl-B2---50methaneCH41,000A3---Ethane Series113 b1,1,2-trichloro-1,2,2-trifluoroethaneCCl2FCClF21,000A12,600201.2114 b1,2-dichloro-1,1,2,2- tetrafluoroethaneCClF2CClF21,000A120,0001408.7115 bchloropentafluoroethaneCClF2CF31,000A1120,00076047116hexafluoroethaneCF3CF31,000A197,000550341232,2-dichloro-1,1,1,-trifluoroethaneCHCl2CF3 50B19,100573.51242-chloro-1,1,1,2-tetrafluoroethaneCHClFCF31,000A110,000563.5125pentafluoroethaneCHF2CF31,000A175,00037023134 a1,1,1,2-tetrafluoroethaneCH2FCF31,000A150,00021013142 b1-chloro-1, 1-difluoroethaneCH3CClF21,000A220,000835.1143 a1,1,1-trifluoroethaneCH3CF31,000A2L21,000704.5152 a1,1-difluoroethaneCH3CHF21,000A212,000322.0170ethaneCH3CH31,000A37,0008.70.54EthersE170methoxymethane (dimethyl ether)CH3OCH31,000A38,500161.0Propane218octafluoropropaneCF3,CF2CF31,000A190,00069043227 ea1,1,1,2,3,3,3-heptafluoropropaneCF3CHFCF31,000A184,00058036236 fa1,1,1,3,3,3-hexafluoropropaneCF3CH2CF31,000A155,00034021245 fa1,1,1,3,3-pentafluoropropaneCHF2CH2CF3 300B134,00019012290propaneCH3CH2CH31,000A35,3009.50.56Cyclic Organic CompoundsC318octafluorocyclobutane-(CF2)4-1,000A180,00066041Miscellaneous Organic Compounds Hydrocarbons600butaneCH3CH2CH2CH31,000A3--.51600 a2-methylpropane (isobutane)CH(CH3)2CH31,000A34,0009.6.59601pentaneCH3CH2CH2CH2CH3 600A31,0002.9.18601 a2-methylbutane (isopentane)(CH3)2CHCH2CH3 600A31,0002.9.18611methyl formateHCOOCH3 100B2---Inorganic Compounds702hydrogenH2-A3---704heliumHe-A1---717ammoniaNH325B2L3200.22.014718waterH2O-A1---720neonNe-A1---728nitrogenN2-A1---740argonAr-A1---744carbon dioxideCO2 5000A140,000724.5764sulfur dioxideSO2-B1---Unsaturated Organic Compounds1150ethene (ethylene)CH2=CH2 200A3---1234yf2,3,3,3-tetrafluoro-1-propeneCF3CF=CH2 500A2L16,000754.71234ze(E)trans-1,3,3,3-tetrafluoro-1-propeneCF3CH=CHF 800A2L16,000754.71270propene (propylene)CH3CH=CH2 500A31,0001.7.1Zeotropes (Refrigerant Blends)400 (50%/50%) bR-12/114 (50.0/50.0)1,000A128,00016010400 (60%/40%) bR-12/114 (60.0/40.0)1,000A130,00017011401AR-22/152a/124 (53.0/13.0/34.0)(±2.0/+0.5, -1.5;/±1.0)1,000A127,0001106.6401BR-22,/152a/124 (61.0/11.0/28.0)(±2.0/+0.5, -1.5/±1.0)1,000A130,0001207.2401CR-22,/152a/124 (33.0/15.0/52.0)(±2.0/+0.5, -1.5/±1.0)1,000A120,000845.2402AR-125/290/22 (60.0/2.0/38.0)(±2.0/+0.1, -1.0/±2.0)1,000A133,0001408.5402BR-125/290/22 (38.0/2.0/60.0)(±2.0/+0.1, -1.0/±2.0)1,000A163,00024015403AR-290/22/218 (5.0/75.0/20.0)(+.2, -2.0/±2.0/±2.0)1,000A233,0001207.6403BR-290/22/218 (5.0/56.0/39.0)(+.2, -2.0/±2.0/±2.0)1,000A170,00029018404AR-125/143a/134a (44.0/52.0/4.0)(±2.0/±1.0/±2.0)1,000A1130,00050031406AR-22/600a/142b (55.0/4.0/41.0)(±2.0/±1.0/±1.0)1,000A221,000254.7407AR-32/125/134a (20.0/40.0/40.0)(±2.0/±2.0/±2.0)1,000A183,00030019407BR-32/125/134a (10.0/70.0/20.0)(±2.0/±2.0/±2.0)1,000A179,00033021407CR-32/125/134a (23.0/25.0/52.0)(±2.0/±2.0/±2.0)1,000A181,00029018407DR-32/125/134a (15.0/15.0/70.0)(±2.0/±2.0/±2.0)1,000A168,00025016407ER-32/125/134a (25.0/15.0/60.0)(±2.0/±2.0/±2.0)1,000A180,00028017407FR-32/125/134a (30.0/30.0/40.0)(±2.0/±2.0/±2.0)1,000A195,00032020408AR-125/143a/22 (7.0/46.0/47.0)(±2.0/±1.0/±2.0)1,000A195,00011021409AR-22/124/142b (60.0/25.0/15.0)(±2.0/±2.0/±1.0)1,000A129,0001207.1409BR-22/124/142b (65.0/25.0/10.0)(±2.0/±2.0/±1.0)1,000A130,0003907.3410AR-32/125 (50.0/50.0)(+0.5, -1.5/+1.5, -0.5)1,000A1140,00042026410BR-32/125 (45.0/55.0)(±1.0/±1.0)1,000A1140,00043027411AR-1270/22/152a(1.5/87.5/11.0)(+0.0, -1.0/+2.0,-0.0/+0.0, -1.0) 990A214,000462.9411BR-1270/22/152a(3.0/94.0/3.0)(+0.0, -1.0/+2.0,-0.0/+0.0, -1.0) 980A213,000452.8412AR-22/218/142b (70.0/5.0/25.0)(±2.0/±2.0/±1.0)1,000A222,000825.1413AR-218/134a/600a (9.0/88.0/3.0)±1.0/±2.0/+0.0,-1.0)1,000A222,000955.8414AR-22/124/600a/142b(51.0/28.5/4.0/16.5)(±2.0/±2.0/±0.5 /+0.5, -1.0)1,000A126,0001006.4414BR-22/124/600a/142b(50.0/39.0/1.5/9.5)(±2.0/±2.0/±0.5 /+0.5, -1.0)1,000A123,000956.0415AR-22/152a (82.0/18.0)(±1.0/±1.0)1,000A257,00019012415BR-22/152a (25.0/75.0)(±1.0/±1.0)1,000A252,0001209.3416AR-134a/124/600(59.0/39.5/1.5)(+0.5, -1.0/+1.0,-0.5/+1.0, -0.2)1,000A114,000623.9417AR-125/134a/600 (46.6/50.0/3.4)(±1.1/±1.0/+0.1,-0.4)1,000A113,000563.5417BR-125/134a/600 (79.0/18.3/2.7)(±1.0/±1.0/+0.1,-0.5)1,000A115,000704.3418AR-290/22/152a (1.5/96.0/2.5(±0.5/±1.0/±0.5)1,000A259,00020013419AR-125/134a/E170 (77.0/19.0/4.0)(1.0/1.0/1.0)1,000A270,00031019420AR-134a/142b (88.0/12.0)(+1.0,-0.0/+0.0,-1.0)1,000A145,00019012421AR-125/134a (58.0/42.0)(±1.0/±1.0)1,000A161,00028017421BR-125/134a (85.0/15.0)(±1.0/±1.0)1,000A169,00033021422AR-125/134a/600a (55.0/42.0/3.0)(±1.0/±1.0/+0.1,-0.4)1,000A163,00029018422BR-125/134a/600a (82.0/15.0/3.0)(±1.0/±1.0/+0.1,-0.5)1,000A156,00025016422CR-125/134a/600a (82.0/15.0/3.0)(±1.0/±1.0/+0.1,-0.5)1,000A162,00029018422DR-125/134a/600a(65.1/31.5/3.4)(+0.9,-1.1/±1.0/+0.1,-0.4)1,000A158,00026016423AR-134a/227ea (52.5/47.5)(±1.0/±1.0)1,000A159,00031019424AR-125/134a/600a/600/601a(50.5/47.0/0.9/1.0/0.6)(±1.0/±1.0/+0.1,-0.2/+0.1, +0.2/+0.1,-0.2) 970A123,0001006.2425AR-32/134a/227ea (18.5/69.5/12.0)(±0.5/±0.5/±0.5)1,000A172,00026016426AR-125/134a/600/601a(5.1/93.0/1.3/0.6)(±1.0/±1.0/+0.1,-0.2/+0.1, -0.2) 990A120,000835.2427AR-32/125/143a/134a(15.0/25.0/10.0/50.0)(±2.0/±2.0/±2.0/;±2.0)1,000A179,00029018428AR-125/143a/290/600a(77.5/20.0/0.6/1.9)(±1.0/±1.0/+0.1,-0.2/+0.1, -0.2)1,000A183,00037023429AR-E170/152a/600a(60.0/10.0/30.0)(±1.0/±1.0/±1.0)1,000A36,30013.81430AR-152a/600a (76.0/24.0)(±1.0/±1.0)1,000A38,000211.3431AR-290/152a (71.0/29.0)(±1.0/±1.0)1,000A35,50011.69432AR-1270/E170 (80.0/20.0)(±1.0/±1.0) 710A31,2002.1.13433AR-1270/290 (30.0/70.0)(±1.0/±1.0) 880A33,1005.5.34433BR-1270/290 (5.0/95.0)(±1.0/±1.0) 950A34,5008.1.51433CR-1270/290 (25.0/75.0)(±1.0/±1.0) 790A33,6006.6.41434AR-125/143a/134a/600a(63.2/18.0/16.0/2.8)(±1.0/±1.0±1.0/+0.1,-0.2)1,000A173,00032020435AR-E170/152a (80.0/20.0)(±1.0/±1.0)1,000A38,500171.1436AR-290/600a (56.0/44.0)(±1.0/±1.0)1,000A34,0008.1.5436BR-290/600a (52.0/48.0)(±1.0/±1.0)1,000A34,0008.1.5437AR-125/134a/600/601(19.5/78.5/1.4/0.6)(+0.5,-1.8/+1.5,-0.7/+0.1,-0.2/+0.1,-0.2) 990A119,000815.0438AR-32/125/134a/600/601a(8.5/45.0/44.2/1.7/0.6)(+0.5,-1.5/±1.5/±1.5/+0.1,-0.2/+0.1,-0.2)990A120,000794.9439AR-32/125/600a(50.0/47.0/3.0)(±1.0/±1.0/±0.5)990A226,000764.7440AR-290/134a/152a(0.6/1.6/97.8)(±1.0/±0.6/±0.5)1,000A212,000311.9441AR-179/290/600a/600(3.1/54.8/6.0/36.1)(±0.3/±2.0/±0.6/±2.0)1,000A33,2006.3.39Azeotropes (Refrigerant Blends)500 bR-12/152a (73.8/26.2)-1,000A130,0001207.6501 bR-22/12 (75.0/25.0)-1,000A154,00021013502 bR-22/115 (48.8/51.2)-1,000A173,00033021504R-32/115 (48.2/51.8)-1,000-140,00045028507AR-125/143a (50.0/50.0)-1,000A1130,00052032508AR-23/116 (39.0/61.0)-1,000A155,00022014508BR-23/116 (46.0/54.0)-1,000A152,00020013509AR-22/218 (44.0/56.0)-1,000A175,00039024510AR-E170/600a (88.0/12.0)(±0.5/±0.5)1,000A37,30014.87511AR-290/E170 (95.0,5.0)(±1.0/±1.0)1,000A35,3009.5.59 For SI: 1 pound = 0.454 kg, 1 cubic foot = 0.0283 m 3 . a. Data based on ASHRAE 34 including Addenda a through o. For more complete data, see ASHRAE 34 and Addenda. Use of Addenda issued after Addendum o is subject to approval as set forth in Section 1102.2. b. Class I ozone depleting refrigerant. Not permitted for new installations. c. Refrigerants in Safety Group "A2L" shall comply with rules of the department. Refrigerants in Safety Group "B2L" shall comply with all applicable requirements for "B2" refrigerants. d. OCCUPATIONAL EXPOSURE LIMIT (OEL). The time-weighted average (TWA) concentration for a normal 8-hour workday and a 40-hour workweek to which nearly all workers can be repeatedly exposed without adverse effect, based on the OSHA PEL, ACGIH TLV-TWA, AIHA WEEL, or consistent value. (Am. L.L. 2023/077, 6/11/2023, eff. 6/11/2023) Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2023/077.

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