結構式
CAS: 303-38-8
分子式: C7H6O4
分子量: 154.122
中文名稱: 2,3-二羥基苯甲酸
英文名稱: 2,3-dihydroxy-benzoic acid
2,3-dihydroxybenzoic acid
2-pyrocatechuic acid
3-hydroxysalicylic acid
性質描述: 類白色或白色結晶粉末 熔點202-205℃
質量標準:
外觀 類白色結晶粉末
含量 ≥99%
熔點 202-205℃
水分 ≤0.5%
用途: 醫藥中間體。
其它信息：
Product Identification
【Product Name】2,3-Dihydroxybenzoic acid
【Synonyms】2,3-Dihydroxybenzoic acid ；2,3-二羥基苯甲酸
【CAS】303-38-8
【Formula】C7H6O4
【Molecular Weight】154.12
【EINECS】206-139-5
【RTECS】DG8576490
【RTECS Class】Drug
【Beilstein/Gmelin】2209117
【Beilstein Reference】4-10-00-01414
Physical and Chemical Properties
【Appearance】Beige powder.
【Solubility in water】Very soluble
【Melting Point】203~204℃
【Boiling Point】339℃
【pKa/pKb】2.96 (pKa)
【Partition Coefficient】.81
【Usage】Iron chelating agent.
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】Immediately 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】Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【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. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards Identification
【Ingestion】The toxicological properties of this substance have not been fully investigated.
【Inhalation】Inhalation of dust may cause respiratory tract irritation.
【Skin】No information regarding skin irritation and other potential effects was found.
【Eyes】Dust may cause mechanical irritation.
【EC Risk Phrase】R 36/37/38
【EC Safety Phrase】S 26 36
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.
Fire Fighting Measures
【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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate 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.
Stability and Reactivity
【Incompatibilities】Oxidizing agents.
【Stability】Stable under normal temperatures and pressures.
【Decomposition】Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
