Product Identification
【Product Name】5-Methyl-2-(1-methylethyl)phenol
【Synonyms】p-Cymen-3-ol；百里香酚
【CAS】89-83-8
【Formula】C10H14O
【Molecular Weight】150.24
【EINECS】201-944-8
【RTECS】XP2275000
【RTECS Class】Drug; Mutagen; Reproductive Effector
【Merck】12,9540
【Beilstein/Gmelin】1907135
【Beilstein Reference】4-06-00-03334
【EC Index Number】604-032-00-1
【EC Class】Harmful; Corrosive; Dangerous for the Environment

Physical and Chemical Properties
【Appearance】Colorless crystals, thyme-like aromatic odor.
【Solubility in water】1 g/L
【Melting Point】49~51℃
【Boiling Point】233℃
【Vapor Pressure】30 (30℃)
【Density】0.9898 - 0.9199 g/cm3 (0~90℃)
【pKa/pKb】10.62 (pKa)
【Partition Coefficient】3.3
【Heat Of Vaporization】51.57 kJ/mol
【Usage】For destroying mold, preserving documents, art objects, and urine. Stabilizer (antioxidant) for trichloroethylene, haloethane.
【Saturation Concentration】2.9 ppm (0.0003%) at 25℃(calculated)
【Odor threshold】0.05 mg/L
【Refractive Index】1.5227 (20℃)

First Aid Measures
【Ingestion】Do NOT induce vomiting. 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】Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
【Skin】Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Destroy contaminated shoes.
【Eyes】Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Handling and Storage
【Storage】Keep container closed when not in use. 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. Use only in a well ventilated area. Minimize dust generation and accumulation. Keep container tightly closed. Do not get on skin or in eyes. Do not ingest or inhale. Discard contaminated shoes.

Hazards Identification
【Inhalation】Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
【Skin】Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
【Eyes】Causes eye burns. May cause chemical conjunctivitis and corneal damage.
【Ingestion】May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May be harmful if swallowed. May cause systemic effects.
【Hazards】When heated, emits toxic fumes.
【EC Risk Phrase】R 22 34 51/53
【EC Safety Phrase】S 26 28 36/37/39 45 61
【UN (DOT)】3251

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.
【Exposure Effects】Effects may be delayed. May cause reproductive effects.
【Poison Class】3

Fire Fighting Measures
【Flash Point】104℃
【Autoignition】285℃
【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 agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
【Fire Potential】Flammable.

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
【Incompatibilities】Avoid contact with strong bases, oxidizing agents, acetanilide; antipyrine; camphor; monobromated camphor; cholorohydrate; menthol; quinine sulfate; salol, urethene, spirit nitrous ether.
【Stability】Stable at room temperature in closed containers under normal storage and handling conditions.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
【Combustion Products】Fire may produce irritating and/or toxic gases.

Transport Information
【UN Number】3251
【Hazard Class】4.1
【Packing Group】III
【HS Code】2907 19 00