Product Identification
【Product Name】4-Hydroxy-3-methoxybenzaldehyde 香兰素 3-甲氧基-4-羟基苯甲醛
【Synonyms】
4-Formyl-2-methoxyphenol
4-Hydroxy-3-methoxybenzaldehyde
p-Hydroxy-m-methoxybenzaldehyde
Rhovanil
Vanillaldehyde
Vanillic aldehyde
【CAS】121-33-5
【Formula】C8H8O3
【Molecular Weight】152.15
【EINECS】204-465-2
【RTECS】YW5775000
【RTECS Class】Mutagen; Reproductive Effector; Natural Product
【Merck】12,10069
【Beilstein/Gmelin】472792
【Beilstein Reference】4-08-00-01763
Physical and Chemical Properties
【Appearance】White or very slightly yellow needles.
【Solubility in water】10 g/L
【Melting Point】82
【Boiling Point】285
【Vapor Pressure】0.0019 (25 C)
【Density】1.056 g/cm3 (20 C)
【pKa/pKb】7.78 (pKa)
【Partition Coefficient】1.37
【Heat Of Vaporization】54.3 kJ/mol
【Heat Of Combustion】-1850 kJ/mol
【Usage】Flavoring agent in galenicals, in perfumery, reagent in analytical chemistry, pharmaceutic aid (flavor).
【Vapor Density】5.2
【Refractive Index】1.555
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. Treat symptomatically and supportively. Get medical aid if irritation or symptoms occur.
【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】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 cool, dry place. Store protected from moisture. Store protected from light.
【Handling】Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Store protected from light.
Hazards Identification
【Ingestion】May cause irritation of the digestive tract.
【Inhalation】No hazard expected in normal industrial use. Dust is irritating to the respiratory tract.
【Skin】Dust may cause mechanical irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Low hazard for usual industrial handling.
【Eyes】Dust may cause mechanical irritation. Low hazard for normal industrial handling.
【EC Risk Phrase】R 22
【EC Safety Phrase】S 22 36/37
Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear safety glasses and chemical ggles if splashing is possible. 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 limit(s)】OSHA Permissible Exposure Limit (PEL): 15 mg/m3 total dust, 5 mg/m3 respirable fraction for nuisance dusts.
【Poison Class】4
Fire Fighting Measures
【Flash Point】118
【Autoignition】> 400
【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, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.
【Upper exp. limit】8.8
【Lower exp. limit】1.2
【Fire Potential】Flammability properties of some synthetic fragrant substances and intermediate products.
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. Provide ventilation.
Stability and Reactivity
【Stability】Stable under normal temperatures and pressures.
【Incompatibilities】Strong oxidizing agents, strong bases, light, air, strong reducing agents, moisture, bromine, perchloric acid, potassium t-butoxide, t-chlorobenzene and sodium hydroxide, formic acid and thallium nitrate.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Transport Information
【HS Code】2912 41 00