List of Substances

The list of substance can be sorted Ascending or Descending by Substance Name, CAS Number or UN Number by clicking on the header. (Substance Name is sorted Ascending by default).

Part 1 - Substances likely to explode

Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
1,1-difluoroethylene
(vinylidene fluoride)
75-38-719591%4.50
1,3-butadiene106-99-010101%4.50
1,3-pentadiene504-60-9no number1%4.50
1-buten-3-yne
(vinyl acetylene)
689-97-4no number1%4.50
1-butene
(alpha-butylene)
106-98-910121%4.50
1-chloropropene
(1-chloropropylene)
590-21-6no number1%4.50
1-pentene109-67-111081%4.50
2,2-dimethylpropane463-82-120441%4.50
2-butene107-01-710551%4.50
2-chloropropane
(isopropyl chloride)
75-29-623561%4.50
2-chloropropene
(2-chloropropylene)
557-98-224561%4.50
2-methyl-1-butene563-46-224591%4.50
3-methyl-1-butene563-45-125611%4.50
acetaldehyde75-07-010891%4.50
acetylene74-86-210011%4.50
Ammonium nitrate
(in liquid form)
6484-52-21942, 2067, 2068, 2069, 2070, 2071, 2072, 242681%20.00
Ammonium nitrate
(in solid form)
6484-52-21942, 2067, 2068, 2069, 2070, 2071, 2072, 242660%20.00
ammonium perchlorate7790-98-914421%3.40
benzene71-43-211141%10.00
bromotrifluoroethylene598-73-224191%4.50
butane106-97-810111%4.50
butylene
(butene)
25167-67-310121%4.50
carbonyl sulphide
(carbon oxysulfide)
463-58-122041%4.50
chlorine monoxide
(dichlorine oxide)
7791-21-1no number1%4.50
cis-2-butene
(2-butene-cis)
590-18-110551%4.50
cis-2-pentene
(beta-cis-amylene)
627-20-3no number1%4.50
cyanogen460-19-510261%4.50
cyclohexane110-82-711451%550.00
cyclopropane75-19-410271%4.50
dichlorosilane4109-96-021891%4.50
difluoroethane
(1,1-difluoroethane)
75-37-610301%4.50
dimethyl ether
(methyl ether)
115-10-610331%4.50
dimethyl sulphide75-18-311641%150.00
dimethylamine124-40-31032 & 11601%4.50
ethane74-84-01035 & 19611%4.50
ethyl chloride75-00-310371%4.50
ethyl ether
(diethyl ether)
60-29-711551%4.50
ethyl mercaptan75-08-123631%4.50
ethyl nitrite109-95-511941%4.50
ethylacetylene107-00-624521%4.50
ethylamine75-04-71036 & 22701%4.50
ethylbenzene100-41-411751%7000.00
ethylene74-85-11038 & 19621%4.50
gasoline
(motor fuel)
86290-81-512031%150.00
gasoline
(Unleaded)
8006-61-912031%150.00
hydrogen1333-74-019661%4.50
hydrogen peroxide7722-84-1201552%3.40
isobutane75-28-519691%4.50
isobutylene
(2-methylpropene)
115-11-710551%4.50
isopentane
(2-methylbutane)
78-78-412651%4.50
isoprene78-79-512181%4.50
isopropylamine75-31-012211%4.50
liquefied natural gas8006-14-219721%4.50
methane74-82-81971 & 19721%4.50
methyl formate107-31-312431%4.50
methylacetylene
(propyne)
74-99-710601%4.50
methylamine74-89-510611%4.50
n-pentane
(pentane)
109-66-012651%4.50
naphtha8030-30-612681%50.00
propadiene463-49-022001%4.50
propane74-98-619781%4.50
propylene115-07-110771%4.50
silane7803-62-522031%4.50
sodium chlorate7775-09-9149510%10.00
Styrene100-42-5205510%4.50
tert-butylamine
(2-amino-2-methylpropane)
75-64-911251%150.00
tetrafluoroethylene116-14-310811%4.50
tetramethylsilane75-76-327491%4.50
toluene108-88-312941%2500.00
trans-2-butene
(2-butene-trans)
624-64-610551%4.50
trans-2-pentene
(trans-beta-amylene)
646-04-8no number1%4.50
trichlorosilane10025-78-212951%4.50
trifluorochloroethylene
(chlorotrifluoroethylene)
79-38-910821%4.50
trimethylamine75-50-31083 & 12971%4.50
vinyl chloride75-01-410861%4.50
vinyl ethyl ether
(ethyl vinyl ether)
109-92-213021%4.50
vinyl fluoride75-02-518601%4.50
vinyl methyl ether107-25-510871%4.50
vinylidene chloride75-35-413031%4.50
xylenes1330-20-713071%8000.00

Part 2 - Substances hazardous when inhaled

Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
1,1-dimethylhydrazine57-14-7116310%6.80
Acetic acid64-19-72789, 279095%6.80
acrolein107-02-8109210%2.27
acrylonitrile107-13-1109310%9.10
acryloyl chloride
(acrylyl chloride)
814-68-6no number10%2.27
allyl alcohol107-18-6109810%6.80
allyl chloride107-05-1110010%9.10
allylamine107-11-9233410%4.50
ammonia solution7664-41-72073 & 267220%9.10
ammonia, anhydrous7664-41-7100510%4.50
arsenic trichloride
(arsenous trichloride)
7784-34-1156010%6.80
arsine7784-42-121881%0.45
boron trichloride10294-34-5174110%2.27
boron trifluoride7637-07-2100810%2.27
boron trifluoride dimethyl etherate353-42-4296510%6.80
bromine7726-95-6174410%4.50
carbon disulphide75-15-0113110%9.10
carbon monoxide630-08-0101610%6.80
chlorine7782-50-5101710%1.13
chlorine dioxide10049-04-4no number1%0.45
chloroform
(trichloromethane)
67-66-3188810%9.10
chloropicrin
(trichloronitromethane)
76-06-2158010%2.27
chlorosulphonic acid7790-94-5175410%2.27
crotonaldehyde4170-30-3114310%9.10
cyanogen bromide506-68-3188910%4.50
cyanogen chloride506-77-4158910%4.50
cyclohexylamine108-91-8235710%6.80
diborane19287-45-7191110%1.13
Dichlorodimethyl ether [Bis
(chloromethyl) ether]
542-88-122491%0.45
Dichloromethane
(methylene chloride)
75-09-215931%9.10
dimethyldichlorosilane
(dichlorodimethylsilane)
75-78-5116210%2.27
epichlorohydrin106-89-8202310%9.10
ethylene chlorohydrin
(2-chloroethanol)
107-07-3113510%4.50
Ethylene dichloride  
(1,2-Dichloroethane)
107-06-2118410%6.80
ethylene oxide75-21-8104010%4.50
ethylenediamine107-15-3160410%9.10
ethyleneimine151-56-4118510%4.50
fluorine7782-41-410451%0.45
formaldehyde, solution50-00-01198 & 220910%6.80
furan110-00-9238910%2.27
hydrazine302-01-2202910%6.80
hydrochloric acid7647-01-0178930%6.80
hydrofluoric acid7664-39-3179050%0.45
hydrogen bromide
(hydrobromic acid)
10035-10-61048 & 178810%1.13
hydrogen chloride, anhydrous7647-01-02186 & 105010%2.27
hydrogen cyanide
(hydrocyanic acid)
74-90-81051 & 1613 & 161410%1.13
hydrogen fluoride, anhydrous7664-39-310521%0.45
hydrogen selenide7783-07-522021%0.22
hydrogen sulphide7783-06-4105310%4.50
iron pentacarbonyl13463-40-6199410%1.13
isobutyronitrile78-82-0228410%9.10
isopropyl chloroformate108-23-6240710%6.80
ketene463-51-4no number1%0.22
mercury7439-97-62809N/A1.00
methyl bromide74-83-9106210%2.27
methyl chloride74-87-3106310%4.50
methyl chloroformate79-22-1123810%2.27
Methyl chloromethyl ether
(Chloromethyl methyl ether)
107-30-2123910%2.27
methyl iodide74-88-4264410%4.50
methyl isocyanate624-83-9248010%4.50
methyl mercaptan74-93-1106410%4.50
methyl thiocyanate556-64-9no number10%9.10
methylacrylonitrile126-98-7307910%4.50
methylhydrazine
(monomethyl hydrazine)
60-34-4124410%6.80
methyltrichlorosilane75-79-6125010%2.27
n-propyl chloroformate
(propyl chloroformate)
109-61-5274010%6.80
nickel carbonyl13463-39-312591%0.45
nitric acid7697-37-22031 & 203280%6.80
nitric oxide
(nitrogen monoxide)
10102-43-9166010%4.50
nitrogen dioxide10102-44-0106710%1.13
osmium tetroxide20816-12-024711%0.22
perchloromethyl mercaptan594-42-3167010%4.50
perchloryl fluoride
(trioxychlorofluoride)
7616-94-6308310%6.80
peroxyacetic acid
(peracetic acid)
79-21-0310710%4.50
phenol108-95-21671 & 2312 & 282110%9.10
phosgene75-44-510761%0.22
phosphine7803-51-2219910%2.27
phosphorus oxychloride10025-87-3181010%2.27
phosphorus trichloride7719-12-2180910%6.80
phosphorus, white7723-14-02447N/A1.00
piperidine110-89-4240110%6.80
propionitrile107-12-0240410%4.50
propylene oxide75-56-9128010%4.50
propyleneimine75-55-8192110%4.50
stibine7803-52-3267610%2.27
sulphur dioxide7446-09-5107910%2.27
Sulphur hexafluoride
(Sulfur hexafluoride)
2551-62-4108010%9.10
sulphur tetrafluoride7783-60-0241810%1.13
sulphur trioxide7446-11-9182910%4.50
sulphuric acid, fuming
(oleum)
8014-95-7183110%4.50
tetraethyl lead78-00-2164910%2.27
tetramethyl lead75-74-1no number10%4.50
tetranitromethane509-14-8151010%4.50
thionyl chloride7719-09-7183610%6.80
titanium tetrachloride7550-45-0183810%1.13
toluene diisocyanate26471-62-5207810%4.50
toluene-2,4-diisocyanate584-84-9207810%4.50
toluene-2,6-diisocyanate91-08-7207810%4.50
trans-crotonaldehyde123-73-9114310%9.10
trimethylchlorosilane
(chlorotrimethylsilane)
75-77-4129810%4.50
vinyl acetate108-05-4130110%6.80

Part 3 - Other hazardous Substances

Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
Name of the SubstanceCAS Registry NumberUN Number (if applicable)Concentration (%)Threshold Amount (tonnes)
3,3'-dichlorobenzidine91-94-1no number1%1.13
4-tert-Nonylphenol84852-15-3no number10%1.13
Arsenic7440-38-2155810%0.22
Arsenic acid7778-39-41553, 155410%0.22
Arsenic pentoxide1303-28-2155910%0.22
Arsenic trioxide
(Arsenic(III) oxide)
1327-53-3156110%0.22
Cadmium chloride10108-64-2no number10%0.22
Cadmium oxide1306-19-0no number10%0.22
Cadmium sulphate10124-36-4no number10%0.22
Cadmium sulphide1306-23-6no number10%0.22
Chromic acid7738-94-51463, 175510%0.22
Chromium trioxide1333-82-01463, 175510%0.22
Naphthalene
(in liquid form)
91-20-3230410%4.50
Nickel acetate373-02-4no number10%0.22
Nickel ammonium sulphate
(nickel ammonium sulfate)
15699-18-0no number10%0.22
Nickel carbonate3333-67-3no number10%0.22
Nickel chloride7718-54-9no number10%0.22
Nickel nitrate
(Nickel(II) nitrate)
13138-45-9272510%0.22
Nickel oxide1313-99-1no number10%0.22
Nickel(II) nitrate, hexahydrate13478-00-7272510%0.22
Nickel(II) sulphate
(Nickel(II) sulfate)
7786-81-4no number10%0.22
Nickel(II) sulphate, hexahydrate
(Nickel(II) sulfate, hexahydrate)
10101-97-0no number10%0.22
Nonylphenol
(mixed isomers)
25154-52-3no number10%1.13
p-Nonylphenol104-40-5no number10%1.13
Potassium chromate7789-00-6no number10%0.22
Sodium arsenate, dibasic7778-43-0168510%0.22
Sodium arsenate, dibasic, heptahydrate10048-95-0168510%0.22
Sodium arsenite7784-46-51686, 202710%0.22
Sodium chromate7775-11-3no number10%0.22
Sodium dichromate10588-01-9no number10%0.22
Tetrachloroethylene
(Perchloroethylene)
127-18-418971%1.13
Tetrachloromethane
(Carbon tetrachloride)
56-23-518461%0.22
Tributyl tetradecyl phosphonium chloride
(TTPC)
81741-28-8no number10%0.22
Trichloroethylene
(TCE)
79-01-617101%1.13
Date modified: