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分子式: C7H5ClO3
分子量: 172.57
中文名称: 5-氯水杨酸
5-氯-2-羟基苯甲酸
5-氯代水杨酸
2-羟基-5-氯苯甲酸
英文名称: 5-chloro-2-hydroxy-Benzoic acid
5-Chlorosalicylic acid
5-chloro-salicylic acid
性质描述: 白色结晶性粉末。熔点173-174℃（172℃，174~176℃）。溶于热水，难溶于冷水，易溶于乙醇、苯和乙酸。与三氯化铁作用呈红紫色。
质量指标:
外观 白色结晶粉末
含量 ≥99.50%
熔点 172~176℃
水分 ≤0.5%
灼烧残渣 ≤0.15%
3-氯水杨酸 ≤0.40%
3,5-二氯水杨酸 ≤0.40%
用途: 一种重要的精细化工产品，是一些药品和农药合成的原料。是合成抗蠕虫药氯硝柳胺( 血防-67，英文Niclosamide)的中间体。
Product Identification
【Product Name】5-Chloro-2-hydroxybenzoic acid 5-氯水杨酸安全技术说明书
【Synonyms】2-Hydroxy-5-chlorobenzoic acid
【CAS】321-14-2
【Formula】C7H5ClO3
【Molecular Weight】172.57
【EINECS】206-283-9
【RTECS】VO2080000
【RTECS Class】Drug
【Beilstein/Gmelin】2046665
【Beilstein Reference】4-10-00-00207
【EC Class】harmful
Physical ａnd Chemical Properties
【Appearance】Cream crystalline powder.
【Solubility in water】Very soluble
【Melting Point】171 - 175
【Boiling Point】321
【pKa/pKb】2.64 (pKa)
【Partition Coefficient】1.76
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. 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.
【Skin】Get medical aid. Flush skin with plenty of soap ａnd water for at least 15 minutes while removing contaminated clothing ａnd shoes. Wash clothing before reuse.
【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】Store in a cool, dry place. 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 with adequate ventilation. Minimize dust generation ａnd accumulation. Avoid contact with eyes, skin, ａnd clothing. Avoid ingestion ａnd inhalation.
Hazards Identification
【Ingestion】Harmful if swallowed. Causes digestive tract irritation.
【Inhalation】May cause respiratory tract irritation.
【Skin】May cause skin irritation.
【Eyes】May cause eye irritation.
【EC Risk Phrase】R 22 36/37/38
【EC Safety Phrase】S 26 36/37/39
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.
【Poison Class】3
Fire Fighting Measures
【Autoignition】> 500
【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, dry chemical, chemical foam, or alcohol-resistant foam.
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
【Disposal Code】4
【Stability】Stable under normal temperatures ａnd pressures.
【Incompatibilities】Strong oxidizing agents.
【Decomposition】Hydrogen chloride, carbon monoxide, irritating ａnd toxic fumes ａnd gases, carbon dioxide, chlorine.
Transport Information
【HS Code】2918 29 90
