HYD RO CAR BO NS, H ALO GE NAT ED: M ETH OD 1003, Issue 3, dated 1 5 Ma rch 2003 Page 6 o f 7 TABLE 2. PHYSICAL PROPERTIES Compound RTECS
M.W.
mg/m3 = 1 ppm @ NTP
Synonyms
Properties
Group A Bromoform (CHBr3 )
252.75
10.33
tribromomethane
liquid, d 2.887; BP 148 °C; nonflammable
Carbon tetrachloride (CCl4 )
153.84
6.29
tetrachloromethane
liquid; d 1.585; BP 76.7 °C; FP ! 23.0 °C; VP 91.3 mm @ 20 °C; vapor density (air = 1) 5.3
Chlorobenzene (C6 H5 Cl)
112.56
4.60
monochlorobenzene; phenyl chloride
liquid; d 1.105 @ 25 °C; BP 131.6 °C; MP ! 45 °C; flash pt. 29.4 °C (CC)
Chloroform (CHCl3 )
119.39
4.88
trichloromethane
liquid, d 1.485 @ 20 °C; BP 61.2 °C; FP -63.5 °C
1,1-Dichloroethane (CH3 CHCl2 )
98.95
4.05
ethylidene chloride
liquid, d 1.174 @ 20 °C; BP 57 to 59 °C; FP ! 98 °C
Ethylene dichloride (ClCH2 CH2 Cl)
98.96
4.05
1,2-dichloroethane
Tetrachloroethylene (Cl2 C=CCl2 )
165.83
6.78
perchloroethylene
liquid; d 1.2554 @ 20 °C; BP 83.5 °C; FP ! 35.5 °C; flash pt. 13 °C; explosive limits in air 6 to 16% liquid; d 1.625 @ 20 °C; BP 121 °C; FP ! 22.4 °C
1,1,1-trichloroethane (CH3 CCl3 )
133.42
5.45
methyl chloroform
liquid; d 1.325; BP 75 °C; FP ! 30.4 °C; nonflammable
Trichloroethylene (CICH=CCl2 )
131.40
5.37
ethylene trichloride; trichloroethene
liquid; d 1.459 @ 20°C; BP 87.2°C; FP- 72.8°C; VP 58 mm Hg @ 20°C (9.9 kPa); explosive range 11 to 41% v/v in air
Benzyl chloride (C6 H5 CH2 Cl)
126.58
5.17
(chloromethyl) benzene; "-chlorotoluene
liquid; BP 179 °C; MP ! 48 to ! 43 °C; d 1.100 @ 20 °C; flash pt. 67 °C
Chlorobromomethane (CH2 BrCl)
129.39
5.29
bromochloromethane; Halon 1011
liquid; d 1.93 @ 20 °C; BP 68 °C; MP ! 88 °C; nonflammable
o-Dichlorobenzene (1,2-C6 H4 Cl2 )
147.00
6.01
1,2-dichlorobenzene
liquid; d 1.284; BP 172 to 179 °C; FP ! 17 °C; flash pt. 65.5 °C
p-Dichlorobenzene (1,4-C6 H4 Cl2 )
147.00
6.01
1,4-dichlorobenzene
solid crystals; d 1.458; BP 173.7 °C; MP 53 °C; sublimes; flash pt. 65.5 °C
1,2-Dichloroethylene (ClCH=CHCl)
96.94
3.96
acetylene dichloride; 1,2-dichloroethene
liquid; transisomer; d 1.257; BP 47 to 49 °C; MP ! 57°C; cis-isomer; d 1.282; BP 58 to 60 °C; flash pt. 3.9 °C; FP ! 80 °C
Hexachloroethane (CCl3 CCl3 )
236.74
9.66
perchloroethane
solid; d 2.091; MP 185 °C; BP sublimes at 187 °C
1,1,2-Trichloroethane (Cl2 CHCH2 Cl)
133.41
5.45
vinyl trichloride
liquid; d 1.4432 @ 20 °C; BP 113.7 °C; FP ! 36.4 °C; VP 19 mm Hg @ 20 °C
1,2,3-Trichloropropane (CH2 ClCHClCH2 Cl)
147.43
6.03
allyl trichloride; glycerol trichlorohydrin
liquid; d 1.3888 @ 20 °C; BP 156.2 °C; FP ! 15 °C; flash pt. 82.2 °C (OC)
Group B
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
