ICSC 1533 - tert-BUTYL CHROMATE

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tert-BUTYL CHROMATE	ICSC: 1533 (April 2005)
bis(tert-Butyl)chromate Chromic acid, di-tert-butyl ester

CAS #: 1189-85-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use carbon dioxide, foam, dry powder, water spray, alcohol-resistant foam.

AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Shortness of breath. Burning sensation. Laboured breathing. Sore throat.	Use 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.	Wear 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 refer for medical attention.
Ingestion	Burning sensation. Abdominal pain. Diarrhoea. Nausea. Vomiting. Shock or collapse.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.	According to UN GHS Criteria Transportation UN Classification
STORAGE
Separated from strong bases and incompatible materials. See Chemical Dangers. Well closed. Store in an area without drain or sewer access.
PACKAGING

tert-BUTYL CHROMATE

ICSC: 1533

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS HYGROSCOPIC LIQUID. Physical dangers Chemical dangers The substance is a strong oxidant. It reacts violently with combustible and reducing materials. Decomposes on burning. This produces toxic fumes. The solution in water is a strong acid. It reacts violently with bases and is corrosive.	Formula: C₈H₁₈CrO₄ / ((CH₃)₃CO)₂CrO₂ Molecular mass: 230.2 Melting point: -2.8°C Solubility in water: miscible Relative vapour density (air = 1): 7.9 Flash point: see Notes

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS HYGROSCOPIC LIQUID.

Physical dangers

Chemical dangers
The substance is a strong oxidant. It reacts violently with combustible and reducing materials. Decomposes on burning. This produces toxic fumes. The solution in water is a strong acid. It reacts violently with bases and is corrosive.

Formula: C₈H₁₈CrO₄ / ((CH₃)₃CO)₂CrO₂
Molecular mass: 230.2
Melting point: -2.8°C
Solubility in water: miscible
Relative vapour density (air = 1): 7.9
Flash point: see Notes

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, through the skin and by ingestion. Effects of short-term exposure The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.	Inhalation risk A harmful concentration of airborne particles can be reached quickly when dispersed. 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.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

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.

OCCUPATIONAL EXPOSURE LIMITS
EU-OEL: (as Cr): 0.005 mg/m³ as TWA; (see Notes)

ENVIRONMENT
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 ICSC 1194. 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. EU-OEL limit value 0.010 mg/m³ until 17 January 2025. Limit value: 0.025 mg/m³ for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025.

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 ICSC 1194.
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.
EU-OEL limit value 0.010 mg/m³ until 17 January 2025. Limit value: 0.025 mg/m³ for welding or plasma cutting processes or similar work processes that generate fume until 17 January 2025.

ADDITIONAL INFORMATION

EC Classification

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