BUTYLATED HYDROXYTOLUENE (ICSC)

BUTYLATED HYDROXYTOLUENE	ICSC: 0841

Date of peer-review: March 1999

2,6-Di-tert-butyl-4-methylphenol
2,6-Di-tert-butyl-p-cresol
BHT

CAS #	128-37-0	C₁₅H₂₄O / C₆H₂(OH)(CH₃)(C(CH₃)₃)₂
RTECS #	GO7875000	Molecular mass: 220.34
UN #
EC #

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Powder, water spray, foam, carbon dioxide.
EXPLOSION			In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation	Cough. Sore throat.	Local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Abdominal pain. Confusion. Dizziness. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

PACKAGING & LABELLING

Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles).

EU Classification
UN Classification

EMERGENCY RESPONSE

STORAGE

Separated from strong oxidants, strong bases. Well closed.

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 2001

SEE IMPORTANT INFORMATION ON BACK

BUTYLATED HYDROXYTOLUENE

ICSC: 0841

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO PALE YELLOW CRYSTALS OR POWDER.

CHEMICAL DANGERS:
The substance decomposes on burning and on contact with oxidizing materials.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 mg/m^3 (ACGIH 1998).

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the skin.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver.

PHYSICAL PROPERTIES

Boiling point: 265°C
Melting point: 70°C
Density: 1.03-1.05 g/cm^3
Solubility in water, g/100 ml at 25°C: 0.00006
Vapour pressure, Pa at 20 °C: 1.3
Relative vapour density (air = 1): 7.6

Flash point: 127°C c.c.
Octanol/water partition coefficient as log Pow: 5.1

ENVIRONMENTAL DATA

The substance is harmful to aquatic organisms.

NOTES

Ionol, Antioxidant 4K, Paranox 441, Sustane BHT, Topanol-o-, Tenox BHT, Impruvol, Vulkanox KB are trade names.

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

    See Also:
       Toxicological Abbreviations
       Butylated hydroxytoluene (FAO Nutrition Meetings Report Series 38a)
       Butylated hydroxytoluene (FAO Nutrition Meetings Report Series 40abc)
       Butylated hydroxytoluene (WHO Food Additives Series 5)
       Butylated hydroxytoluene (WHO Food Additives Series 10)
       Butylated hydroxytoluene (WHO Food Additives Series 21)
       Butylated hydroxytoluene (WHO Food Additives Series 35)
       BUTYLATED HYDROXYTOLUENE (JECFA Evaluation)