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tert-BUTYL CHROMATE ICSC: 1533
Date of Peer Review: April 2005

bis(tert-Butyl)chromate
Chromic acid, di-tert-butyl ester
CAS # 1189-85-1 C8H18CrO4 / ((CH3)3CO)2CrO2
RTECS # GB2900000 Molecular mass: 230.2
UN #
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Carbon dioxide. Foam. Dry powder. Water spray. Alcohol-resistant foam.
EXPLOSION


EXPOSURE
AVOID ALL CONTACT!

Inhalation Cough. Shortness of breath. Burning sensation. Laboured breathing. Sore throat.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin Skin burns. Pain. Redness.
Protective clothing. Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Severe deep burns. Pain. Redness.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Burning sensation. Abdominal pain. Diarrhoea. Nausea. Vomiting. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment.
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from strong bases, incompatible materials. See Chemical Dangers. Well closed. Store in an area without drain or sewer access.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
tert-BUTYL CHROMATE ICSC: 1533
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS HYGROSCOPIC LIQUID

CHEMICAL DANGERS:
The substance is a strong oxidant and reacts violently with combustible and reducing materials. The substance decomposes on burning producing toxic fumes. The solution in water is a strong acid, it reacts violently with bases and is corrosive.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as CrO_3) 0.1 mg/m (Ceiling value); (skin); BEI issued; (ACGIH 2005).
MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the kidneys, liver and respiratory tract. This substance is carcinogenic to humans. See Notes.
PHYSICAL PROPERTIES
Melting point: -2.8C
Solubility in water: miscible
Relative vapour density (air = 1): 7.9
Flash point: see Notes
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms.
NOTES
Health effects of exposure to the substance have not been investigated adequately, but in contact with moisture or water it is hydrolyzed to chromium(VI) oxide. See ICSC1194 Chromium(IV) oxide. The occupational exposure limit value should not be exceeded during any part of the working exposure. The substance is combustible but no flash point is available in literature. Do NOT take working clothes home.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005