product Identification
【Product Name】1,3-Dihydroxy-5-methylbenzene 3,5-二羟基甲苯
【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 ggles 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