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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1,3-Dihydroxy-5-methylbenzene(504-15-4)

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
1,3-Dihydroxy-5-methylbenzene
Synonyms
5-Methylresorcinol
1,5-Dihydroxy-3-methylbenzene
3,5-Dihydroxytoluene
3-Hydroxy-5-methylphenol
5-Methyl-1,3-benzenediol
5-Methylbenzene-1,3-diol
CAS
504-15-4
Formula
C7H8O2
Molecular Weight
124.14
EINECS
207-984-2
RTECS
VH2100000
RTECS Class
Other
Merck
12,6995
Beilstein/Gmelin
1071903
Beilstein Reference
4-06-00-05892

Physical and Chemical Properties

Appearance
Off-white crystals.
Solubility in water
Slightly soluble
Melting Point
109
Boiling Point
289 - 290
Vapor Pressure
0.0012 (25 C)
Density
1.2895 g/cm3
pKa/pKb
9.52 (pKa)
Partition Coefficient
1.22
Heat Of Vaporization
55.1 kJ/mol
Heat Of Combustion
-3453 kJ/mol
Usage
Used as a a reagent for pentoses, lignin, beet sugar, saccharoses, arabinose, diastase.
Refractive Index
1.5403

First Aid Measures

Ingestion
Get medical aid. If conscious drink water, then induce vomiting. If unconscious, immediately take victim to a physician and do NOT attempt to induce vomiting. Wash mouth out with water.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
Skin
Get medical aid if irritation develops or persists. Wash clothing before reuse. Flush skin with plenty of soap and water.
Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

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

Hazards Identification

Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed. Ingestion may cause convulsions, seizures and possible coma.
Inhalation
Causes respiratory tract irritation. Causes irritation of the mucous membrane.
Skin
Causes skin irritation.
Eyes
Causes eye irritation. May cause eye injury.
EC Risk Phrase
R 22 36/37/38
EC Safety Phrase
S 26 36
UN (DOT)
2811

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
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Fire Fighting Measures

Flash Point
144
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. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Accidental Release Measures

Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation. Place under an inert atmosphere.

Stability and Reactivity

Disposal Code
3
Incompatibilities
Air, strong oxidizing agents, acid chlorides, acid anhydrides.
Stability
Stable under normal temperatures and pressures. Substance may discolor on exposure to light.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

UN Number
2811
HS Code
2907 29 00
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