Chemical name |
Chemical formula |
CAS number |
NIOSH IDLH in ppm |
LC50 Model |
LC50 toxicity in ppm[note 1][2] |
Odor warning property |
NFPA 704 Health Rating |
Arsenic pentafluoride |
AsF5 |
7784-36-3 |
|
Rat |
20 |
inadequate |
4 |
Arsine |
AsH3 |
7784-42-1 |
3 |
Rat |
20; ACGIH (2006) TWA-TLV 0.005ppm |
|
4 |
Bis(trifluoromethyl)peroxide |
C2F6O2 |
927-84-4 |
10 |
Rat |
|
|
|
Boron tribromide |
BBr3 |
10294-33-4 |
50 |
Rat |
380; ACGIH (1990) Ceiling limit 1ppm |
|
3 |
Boron trichloride |
BCl3 |
10294-34-5 |
25 |
Rat |
2541 |
|
4 |
Boron trifluoride |
BF3 |
7637-07-2 |
25 |
|
OSHA, ACGIH (1962) 1ppm ceiling |
|
4 |
Bromine |
Br2 |
7726-95-6 |
3 |
|
ACGIH (1991) Short-Term Exposure Limit STEL-TLV 0.2ppm |
|
3 |
Bromine chloride |
BrCl |
13863-41-7 |
|
Rat |
290 |
|
|
Bromomethane |
CH3Br |
74-83-9 |
|
Rat |
811.14 |
|
3 |
Carbon monoxide |
CO |
630-08-0 |
1,200 (moderately toxic) |
|
ACGIH (1989) TWA TLV 25ppm; NIOSH 35ppm; NIOSH 200ppm Ceiling limit |
|
4 |
Chlorine |
Cl2 |
7782-50-5 |
10 |
|
ACGIH (1986) STEL-TLV 1ppm |
Odor threshold 1ppm |
|
Chlorine pentafluoride |
ClF5 |
13637-63-3 |
|
|
|
|
|
Chlorine trifluoride |
ClF3 |
7790-91-2 |
|
|
ACGIH (1979) Ceiling limit 0.1ppm |
inadequate |
4 |
Chlorofluorocarbons |
|
|
|
|
|
|
|
Chloropicrin |
CCl3NO2 |
76-06-2 |
|
|
ACGIH (1990) TWA-TLV 0.1ppm |
|
|
Cyanogen |
C2N2 |
460-19-5 |
|
Rat |
350; ACGIH (1966) TWA-TLV 10ppm |
inadequate |
4 |
Cyanogen chloride |
CNCl |
506-77-4 |
|
Rat |
1.2 mg/l/h; ACGIH (1977) ceiling limit 0.3ppm |
inadequate |
4 |
Diazomethane |
CH2N2 |
334-88-3 |
2 |
|
ACGIH (1970) TWA-TLV 0.2ppm |
|
|
Diborane |
B2H6 |
19287-45-7 |
|
Rat |
80; ACGIH (1990) TWA-TLV 0.1ppm |
inadequate |
4 |
Dichloroacetylene |
C2Cl2 |
7572-29-4 |
|
Mouse |
45.6 |
|
|
Dichlorosilane |
H2Cl2Si |
4109-96-0 |
|
Rat |
314 |
|
4 |
Fluorine |
F2 |
7782-41-4 |
|
Rat |
185; ACGIH (1970) STEL-TLV 2ppm |
odor threshold 20ppb |
|
Formaldehyde, gas |
CH2O |
50-00-0 |
|
Rat |
0.66; ACGIH (1987) Ceiling limit 0.3ppm |
|
3 |
Germane |
GeH4 |
7782-65-2 |
|
Rat |
622 |
inadequate |
4 |
Hexaethyl tetraphosphate |
(C2H5O)6P4O7 |
|
|
|
|
|
|
Hydrogen azide |
HN3 |
7782-79-8 |
|
|
|
|
|
Hydrogen cyanide |
HCN |
74-90-8 |
|
Rat |
40; ACGIH (1991) ceiling limit 4.7ppm |
inadequate |
4 |
Hydrogen selenide |
H2Se |
7783-07-5 |
1 |
Rat |
2; ACGIH (1990) TWA-TLV 0.05ppm |
inadequate |
4 |
Hydrogen sulfide |
H2S |
7783-06-4 |
100 |
Rat |
712; ACGIH (1990) STEL-TLV 15ppm |
|
4 |
Hydrogen telluride |
H2Te |
7783-09-7 |
|
|
|
|
|
Nickel tetracarbonyl |
Ni(CO)4 |
13463-39-3 |
|
|
ACGIH (1980) TWA-TLV 0.05ppm |
inadequate |
4 |
Nitrogen dioxide |
NO2 |
10102-44-0 |
|
|
|
odor threshold 4 ppm |
|
Osmium tetroxide |
OsO4 |
20816-12-0 |
|
Rat |
|
|
|
Oxygen difluoride |
OF2 |
7783-41-7 |
|
Rat |
2.6; ACGIH (1983) ceiling limit 0.05ppm |
|
|
Perchloryl fluoride |
ClFO3 |
7616-94-6 |
|
Rat |
770; ACGIH (1962) STEL-TLV 6ppm |
|
|
Perfluoroisobutylene |
C4F8 |
382-21-8 |
|
Rat |
1.2 |
|
|
Phosgene |
CCl2O |
75-44-5 |
|
Rat |
5; ACGIH (1992) TWA-TLV 0.1ppm |
inadequate |
4 |
Phosphine |
PH3 |
7803-51-2 |
50 |
|
NIOSH 0.3ppm time weighted average; ACGIH (1992) STEL-TLV 1ppm |
inadequate |
4 |
Phosphorus pentafluoride |
PF5 |
7647-19-0 |
|
Rat |
260 |
|
|
Selenium hexafluoride |
SeF6 |
7783-79-1 |
2 |
Rat |
50; ACGIH (1992) TWA-TLV 0.05ppm |
|
|
Silicon tetrachloride |
SiCl4 |
10026-04-7 |
|
Rat |
750 |
|
|
Silicon tetrafluoride |
SiF4 |
7783-61-1 |
|
Rat |
450 |
|
|
Stibine |
H3Sb |
7803-52-3 |
5 |
Rat |
20 |
|
4 |
Disulfur decafluoride |
S2F10 |
5714-22-7 |
1 |
|
ACGIH (1962) ceiling limit 0.01ppm |
|
4 |
Sulfur tetrafluoride |
SF4 |
7783-60-0 |
|
Rat |
40; ACGIH (1992) ceiling limit 0.1ppm |
|
3 |
Tellurium hexafluoride |
TeF6 |
7783-80-4 |
|
Rat |
25; ACGIH (1992) TWA-TLV 0.02ppm |
|
|
Tetraethyl pyrophosphate |
C8H20O7P2 |
|
|
|
ACGIH (2006) TWA-TLV 0.01 mg/cubic meter |
|
|
Tetraethyl dithiopyrophosphate |
C8H20O5P2S2 |
|
|
|
|
|
|
Trifluoroacetyl chloride |
C2ClF3O |
354-32-5 |
|
Rat |
1000 |
|
|
Tungsten hexafluoride |
WF6 |
7783-82-6 |
|
Rat |
217 |
inadequate |
|