tert-Butyl hypochlorite

  • 1,1-Dimethylethyl hypochlorite
  • Hypochlorous acid, tert-butyl ester
  • Hypochlorous acid, 1,1-dimethylethyl ester
Formula
(CH3)3COCl
Structure
Description
A slightly yellowish liquid with a pungent odor.
Uses
Dehydration of alcohols.

Registry Numbers and Inventories.
CAS
507-40-4
EC (EINECS/ELINCS)
208-072-7
UN (DOT)
3255
Merck
12,1605
Beilstein/Gmelin
1697092
Beilstein Reference
4-01-00-01621
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4H9ClO
Formula mass
108.57
Boiling point, °C
76.85 - 77.85
Density
0.9583 g/cm3 (18 C)
Solubility in water
Insoluble
Refractive index
1.4077 (11.5 C)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Remove trapped material with suction hoses.
Stability
No data.
Incompatibilities
Reacts violently with rubber.

Fire.
Flash Point,°C
-10
Fire fighting
Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Use graphite, soda ash, powdered sodium chloride, or suitable dry powder. Keep run-off water out of sewers and water sources. Do not extinguish fire unless flow can be stopped.
Fire potential
Flammable/combustible material.
Hazards
May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Inhalation of decomposition products may cause severe injury or death.
   Skin
Contact with substance may cause severe burns.
   Eyes
See Skin.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
3255
Response guide
Hazard class
4.2
Packing Group
I
 
Std. Transport #
4916224