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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1-Hydroxy-3,4-dimethylbenzene(95-65-8)

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
1-Hydroxy-3,4-dimethylbenzene
Synonyms
3,4-Dimethylphenol
4-Hydroxy-o-xylene
CAS
95-65-8
Formula
C8H10O
Molecular Weight
122.17
EINECS
202-439-5
RTECS
ZE6300000
RTECS Class
Agricultural Chemical and Pesticide; Tumorigen
Merck
12,10215
Beilstein/Gmelin
1099267
Beilstein Reference
4-06-00-03099
EC Index Number
604-006-00-X
EC Class
Toxic; Corrosive; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Colorless to light tan crystalline powder or solid.
Solubility in water
Slightly soluble
Melting Point
62 - 65
Boiling Point
227
Vapor Pressure
0.05 (25 C)
Density
1.023 g/cm3 (17 C)
pKa/pKb
10.38 (pKa)
Partition Coefficient
2.23
Heat Of Vaporization
48.2 kJ/mol
Usage
Starting materials in the phenolic resins. Xylenols.
Odor threshold
0.003 mg/m3
Refractive Index
1.5442 (20 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. Get medical aid if cough or other symptoms appear.
Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Eyes
Immediately 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
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.

Hazards Identification

Inhalation
May cause respiratory tract irritation.
Skin
Causes skin irritation. May cause skin burns.
Eyes
Causes eye irritation. May cause eye burns.
Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed. A case of fatal xylenol ingestion by a long stay mental hospital patient is described. Clinical course was similar to that observed in other phenolic poisonings with active bowel sounds, nausea, vomiting, severe metabolic acidosis, hypotension, and cardiac and renal failure.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
EC Risk Phrase
R 24/25 34 51/53
EC Safety Phrase
S 26 36/37/39 45 61
UN (DOT)
2261

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
Chronic ingestion may cause effects similar to those of acute ingestion.

Fire Fighting Measures

Flash Point
80-95
Autoignition
599
Fire Fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Upper exp. limit
6.4
Lower exp. limit
1.1
Fire Potential
This material is probably combustible.

Accidental Release Measures

Small spills/leaks
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.

Stability and Reactivity

Disposal Code
9
Incompatibilities
Bases - acid chlorides - acid anhydrides - oxidizing agents - corrodes steel - brass - copper - copper alloys.
Stability
Stable under normal temperatures and pressures.
Decomposition
Carbon monoxide, carbon dioxide.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2261
Hazard Class
6.1
Packing Group
II
HS Code
2907 14 00
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