Calm
Atmosphere

Night time
Winter

Night time Intermediate

Day time
Winter

Day time
Summer

Acrylamide

No Data

Acrylonitrile

B+

A

A

A

A+

Aluminum Sulfate Solution

Aniline

A*

A*

A*

A*

A

Ammonia

D

C

C

C

C

Antimony Pentafluoride

No Data

Arsenic Trioxide

No Data

Benzene

A

A*

A*

A*

A*

Benzyl Chloride

A

A*

A*

A*

A*

Carbon Bisulfide

A

A*

A

A*

A

Chlorine

D

C

C

D

C

Chloroacetic Acid

NOI

NOI

NOI

NOI

NOI

Chloroform

A

A*.

A*

A*

A

Cyclohexylamine

A+

A*+

A*+

A*+

A*+

Dimethyl Hydrazine

No Data

Dinitro-O-Cresol

No Data

Epichlorohydrin

A

A*

A*

A*

A*

Ethylene Oxide

B

A

A

A

B

Ethanolamine

A*

A*

A*

A*

A*

Ethylenediamine

A*

A*

A*

A*

A*

Formaldehyde

No Data

Gyloxal

No Data

Hydrogen Chloride

D

C

C

C

C

Hydrogen Cyanide

D

B

C

B

C

Hydrogen Fluoride

D

C

D

B

D

Hydrogen Peroxide

A*

A*

A*

A*

A*

Hydrazine

B+

A*

A+

A+

A*

Hydrazine Hydrate

No Data

Hexachlorocyclopentadiene

No Data

Isopropylamine

A

A*

A

A*

A

Methylhydrazine

No Data

Methyl Mercaptan

C

B

B

B

B

Mustard Gas

No Data

Nitrobenzene

A*

A*

A*

A*

A*

Phenol, Molten

A*

A*

A*

A*

A*

Phosphoric Acid
(Solid below 107.6F.)

NOI

Potassium Cyanide (Solid)

NOI

Propylene Oxide

A

A

A

A

A

Sodium Cyanide (Solid)

NOI

Sulfuric Acid

A*

A*

A*

A*

A*

Sulfuric Acid , Fuming

A*

A*

A*

A*

A*

Sulfur Dioxide

C

B

B

B

B

Sulphur Trioxide

B

NOI (solid)

NOI (solid)

NOI (solid)

A

Toluene Diisocyanate

A*

NOI

A*

A*

A*

Tolvltriazole, Sodium

No data