Chemicals Requiring Purchase Approval

List of High Hazard Chemicals

The select high hazard chemicals identified below have been classified as particularly hazardous due to the increased fire, health, and/or reactivity risks and require prior approval for purchasing of new materials, or handling and storage of existing material.

 
Compound CAS # Exempt Quantity

 

Anhydrous Ammonia

 

7664-41-7

 

None

 

Anhydrous Hydrogen Bromide

 

10035-10-6

 

None

 

Anhydrous Hydrogen Chloride

 

7647-01-0

 

None

 

Anhydrous Hydrogen Fluoride

 

7664-39-3

 

None

 

Arsine

 

7784-42-1

 

None

 

Azide Compounds

 

various

 

None

 

Benzoyl Peroxide

 

94-36-0

 

None

 

Boron Trichloride

 

10294-34-5

 

None

 

Boron Trifluoride

 

7637-07-2

 

None

 

Carbon Monoxide

 

630-08-0

 

None

 

Chlorine

 

7782-50-5

 

None

 

Chloropicrin

 

76-06-2

 

None

 

Cyanide Salts

 

various

 

None

 

Cyanogen

 

460-19-5

 

None

 

Cyanogen Chloride

 

506-77-4

 

None

 

Diborane

 

19287-45-7

 

None

 

Dichloromethane

 

75-09-2

 

None

 

Dichlorosilane

 

4109-96-0

 

None

 

Dimethylmercury and Other Organomercury Compounds

 

various

 

None

 

Dinitro Compounds (precursors to TNT)

 

various

 

None

 

Disilane

 

1590-87-0

 

None

 

Formaldehyde

 

50-00-0

 

None

 

Fluorine

 

7782-41-4

 

None

 

Fuming Nitric Acid (>80%)

 

7697-37-2

 

None

 

Germane

 

7782-65-2

 

None

 

Hexaethyltetraphosphate

 

757-58-4

 

None

 

HMX (Octogen)

 

2691-41-0

 

None

 

Hydrofluoric Acid

 

7664-39-3

 

None

 

Hydrogen Cyanide

 

74-90-8

 

None

 

Hydrogen Selenide

 

7783-07-5

 

None

 

Hydrogen Sulfide

 

7783-06-4

 

None

 

Mercury

 

7439-97-6

 

None

 

Nitric Oxide

 

10102-43-9

 

None

 

Nitrogen Dioxide

 

10102-44-0

 

None

 

Nitrogen Trioxide

 

10102-44-0

 

None

 

Nitrogen Tetroxide

 

10544-72-6

 

None

 

Perchloric Acid

 

7601-90-3

 

None

 

Phosgene

 

75-44-5

 

None

 

Phosphine

 

7803-51-2

 

None

 

Picric Acid

 

88-89-1

 

None

 

RDX (hexogen)

 

121-82-4

 

None

 

Silane

 

7803-62-5

 

None

 

Silicon Tetrachloride

 

10026-04-7

 

None

 

Sodium-Potassium Alloy

 

11135-81-2

 

None

 

TNT

 

118-96-7

 

None

 

Trimethylaluminum

 

75-24-1

 

None

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