PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Dichlorofluoromethane; (Freon 21, CFC 21) 75-43-4 1029
11.01
15.02
4.08
4.05
7.01
8.00
7.00
11.00
4.09
4.10
Formula Synonyms
CHCl2F DICHLOROFLUOROMETHANE, AF 22, AF 22 (FLUOROCARBON), ALGOFRENE TYPE 5, ARCTON 7, CFC 21, DICHLOROFLUOROMÉTHANE (DOT FRENCH), DICHLOROMONOFLUOROMETHANE, DICLOROFLUOROMETANO (DOT SPANISH), F 21, F 21 (FLUOROCARBON), F-21, FC 21, FLUOROCARBON-21, FLUORODICHLOROMETHANE, FREON 21, FREON® 21, GAS REFRIGERANTE R-21 (DOT SPANISH), GAZ RÉFRIGÉRANT R-21 (DOT FRENCH), GENETRON 21, GENETRON® 21, HALOCARBON 21, HALON 112, HALON® 112, HCFC 21, HCFC-21, MONOFLUORODICHLOROMETHANE, R 21, R 21 (REFRIGERANT), R-21, REFRIGERANT 21, REFRIGERANT GAS R-21
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
102.92 G -130.4 8.9 750 8.6 1.405 @ 9°C
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
30 8300 50000
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
130 35000 210000
Technical Basis
No technical basis available
References
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.