579-44-2

• 常用中文名：二苯乙醇酮
• 常用英文名：DL-Benzoin
• CAS号：579-44-2
• 分子式：C₁₄H₁₂O₂
• 分子量：212.24400
• 发布时间：2018-06-14 00:07:30
• 更新时间：2024-01-07 17:29:08
• 【用途一】
  用作分析试剂、有机合成中间体和防腐剂
  【用途二】
  有机合成原料，用于制联苯甲酰等；医药工业用于生产抗癫痫药苯妥英纳、抗胆碱药胃复康和安胃灵。也可用于染料生产。苯偶姻醚类可用作感光性树脂的光增感剂、照相凹版油墨、光固化型涂料。最近又用于速干性涂料。主要是：苯偶姻异丙醚为白色或浅黄褐色粉末，熔点77-81℃。苯偶姻乙醚为白色粉末，熔点56℃以上。苯偶姻异丁醚（Benzoin isobutyl ether)国际市场上90%纯度的商品沸点133℃（66.7Pa），相对密度0.985（20/4℃），折光率1.5485。作为光增感剂，在性能方面以乙醚最佳，其次为异丙醚和异丁醚，产品的稳定性以异丁醚为最佳。

名称

• 中文名: 二苯乙醇酮
• 英文名: DL-Benzoin
• 中文别名: 二苯羟乙酮
• 英文别名: MFCD00004496; EINECS 204-331-3

物化性质

• 密度: 1.179 g/cm3
• 沸点: 343ºC at 760 mmHg
• 熔点: 134-138ºC(lit.)
• 分子式: C₁₄H₁₂O₂
• 分子量: 212.24400
• 闪点: 154.8ºC
• 精确质量: 212.08400
• PSA: 37.30000
• LogP: 2.60290
• 外观性状: 灰白色晶体,带有一种淡樟脑气味

MSDS

Name: Benzoin 98% Material Safety Data Sheet Synonym: alpha-Hydroxy-alpha-phenylacetophenone; 2-Hydroxy-1,2-diphenylethanone; Desyl alcohol; 2-Hydroxy-2-phenylacetophenone CAS: 579-44-2 Section 1 - Chemical Product MSDS Name:Benzoin 98% Material Safety Data Sheet Synonym:alpha-Hydroxy-alpha-phenylacetophenone; 2-Hydroxy-1,2-diphenylethanone; Desyl alcohol; 2-Hydroxy-2-phenylacetophenone Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 579-44-2 Benzoin 98 209-441-5 Hazard Symbols: None Listed. Risk Phrases: None Listed. Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW Not available. Potential Health Effects Eye: May cause eye irritation. Skin: May cause skin irritation. Ingestion: May cause irritation of the digestive tract. Inhalation: May cause respiratory tract irritation. Chronic: No information found. Section 4 - FIRST AID MEASURES Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Skin: Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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. Inhalation: Remove from exposure and move 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. Notes to Physician: Section 5 - FIRE FIGHTING MEASURES General Information: As in any fire, 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. Use water spray, dry chemical, carbon dioxide, or appropriate foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Storage: Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 579-44-2: Personal Protective Equipment 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 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Solid Color: Slightly yellow, very fine, needle-like, crystalline Odor: None reported. pH: Not available. Vapor Pressure: 1.3 hPa @ 136 deg C Viscosity: Not available. Boiling Point: 194 deg C @ 12 mm Hg Freezing/Melting Point: 135 deg C Autoignition Temperature: Not applicable. Flash Point: Not applicable. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Not available. Solubility in water: Slightly soluble in water. Specific Gravity/Density: Not available. Molecular Formula: C14H12O2 Molecular Weight: 212.0828 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Incompatible materials, strong oxidants. Incompatibilities with Other Materials: Strong oxidizing agents, acids, acid chlorides, and acid anhydrides Hazardous Decomposition Products: Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. Hazardous Polymerization: Has not been reported. Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 579-44-2 unlisted. LD50/LC50: Not available. Carcinogenicity: Benzoin - Not listed by ACGIH, IARC, or NTP. Section 12 - ECOLOGICAL INFORMATION Section 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations. Section 14 - TRANSPORT INFORMATION IATA Not regulated as a hazardous material. IMO Not regulated as a hazardous material. RID/ADR Not regulated as a hazardous material. Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 24/25 Avoid contact with skin and eyes. WGK (Water Danger/Protection) CAS# 579-44-2: No information available. Canada None of the chemicals in this product are listed on the DSL/NDSL list. CAS# 579-44-2 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 579-44-2 is not listed on the TSCA inventory. It is for research and development use only. SECTION 16 - ADDITIONAL INFORMATION N/A

安全

• 安全声明 (欧洲): S24/25
• WGK德国: 2
• RTECS号: DI1590000
• 危险类别: 6.1
• 海关编码: 2914399090

制备

【方法一】
苯甲醛在热氰化钾或氰化钠的乙醇溶液中反应，即可生成苯偶姻。氰离子在反应中为一特殊催化剂，多数芳香醛均可进行此反应，因其相当于两分子醛缩合，该反应称为安息香缩合。将两种不同的醛混合在一起进行安息香缩合，可以得到混合的安息香。将苯甲醛、乙醇混合，用氢氧化钠溶液调节pH值至7-8，加入3%的氰化钠溶液，在75-80℃回流0.5h，降温至10℃以下过滤，滤饼洗至无氰根即得苯偶姻，收率90%以上。

海关

海关编码	2914399090
中文概述	2914399090. 其他不含其他含氧基的芳香酮. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:5.5%. 普通关税:30.0%
申报要素	品名, 成分含量, 用途, 丙酮报明包装
Summary	2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%