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CAS: 90-64-2
分子式: C8H8O3
分子量: 152.15
中文名称: 苦杏仁酸
苯羟乙酸
苯乙醇酸
dl-苦杏仁酸
α-羟基苯乙酸
英文名称: Mandelic acid
acido mandelico
苦杏仁酸性质描述: 苦杏仁酸为白色斜方片状结晶,露置遇光变色分解。熔点119℃。相对密度 1.30。易溶于异丙醇,溶于乙醇和水。R型苦杏仁酸熔点为133℃,[α]-159.73°(乙醇),于160℃ 逐渐外消旋化。S型苦杏仁酸熔点为133.8℃ ,[α]+156.57°(水)。
苦杏仁酸质量标准:
外观 白结晶体
含量 ≥99%
熔点 118-121℃
水分 ≤0.5%
重金属 ≤20ppm
砷 ≤5ppm
苦杏仁酸用途: 在医药工业苦杏仁酸可用于头孢羟唑、血管扩张药环扁桃酯、滴眼药盐酸羟苄唑、匹莫林等的中间体,也可作防腐剂。临床用作尿道防腐剂。也用作测定锆的试剂,也是定铜试剂。
Product Identification
【Product Name】苦杏仁酸
【Synonyms】Mandelic acid
【CAS】90-64-2
【Formula】C8H8O3
【Molecular Weight】152.16
Physical and Chemical Properties
【Appearance】White crystalline powder with a faint odor.
【Solubility in water】151g/L
【Melting Point】117~118℃
【Boiling Point】321.5℃
【Vapor Pressure】0.0001 (25℃)
【Density】1.361 g/cm3
【pKa/pKb】3.41 (pKa)
【Partition Coefficient】.92
【Heat Of Vaporization】59.5 kJ/mol
【Usage】Present in certain skin care products.
【Vapor Density】1.3
【Refractive Index】1.5204
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. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
【Eyes】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】Do not store in direct sunlight. 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 breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards Identification
【Inhalation】The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.
【Skin】No information regarding skin irritation and other potential effects was found. Continued absorption may cause kidney irritation.
【Eyes】No information regarding eye irritation and other potential effects was found.
【Ingestion】The toxicological properties of this substance have not been fully investigated.
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】The toxological properties of this substance have not been fully investigated.
【Poison Class】4 (Substances and products that must be considered harmful)
Fire Fighting Measures
【Flash Point】163.2℃
【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.
Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability and Reactivity
【Disposal Code】4
【Stability】No data.
【Incompatibilities】Strong oxidizing agents
【Decomposition】Carbon monoxide, carbon dioxide.
Transport Information
【HS Code】2918 19 80