Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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2,3,5-Trimethylhydroquinone(700-13-0)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
2,3,5-Trimethylhydroquinone
Synonyms
1,4-Benzenediol, 2,3,5-trimethyl-
1,4-Dihydroxy-2,3,5-trimethylbenzene
3,6-Dihydroxypseudocumol
Pseudocumohydroquinone
psi-Cumohydroquinone
TMHQ
CAS
700-13-0
Formula
C9H12O2
Molecular Weight
152.19
EINECS
211-838-3
RTECS
MX7820000
RTECS Class
Reproductive Effector
Beilstein/Gmelin
1909183
Beilstein Reference
4-06-00-05997
EC Index Number
604-045-00-2
EC Class
Harmful; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Off-white to tan - orange powder.
Melting Point
172-174
Boiling Point
295
Vapor Pressure
31 (177 C)

First Aid Measures

Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash exposed skin throughly with soap and water.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Inhalation
Causes respiratory tract irritation. Causes irritation of mucous membrane.
Skin
Causes skin irritation.
Eyes
Causes eye irritation.
Ingestion
Causes digestive tract irritation.
EC Risk Phrase
R 20 37/38 41 43 50/53
EC Safety Phrase
S 24 26 37/39 60 61
UN (DOT)
3077

Exposure Controls/Personal Protection

Personal Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Exposure Effects
May cause reproductive and fetal effects.
Poison Class
3

Fire Fighting Measures

Flash Point
191
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acrid smoke and fumes.

Transport Information

UN Number
3077
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