2444-37-3

• 常用中文名：(甲硫基)乙酸
• 常用英文名：(METHYLTHIO)ACETICACID
• CAS号：2444-37-3
• 分子式：C₃H₆O₂S
• 分子量：106.144
• 相关类别： 化学试剂 有机试剂 脂肪酸
• 发布时间：2018-07-21 17:10:11
• 更新时间：2024-01-02 20:32:05
• 下载msds

名称

• 中文名: (甲硫基)乙酸
• 英文名: (methylthio)acetic acid
• 中文别名: (甲硫基)二醋酸; (甲基巯基)乙酸; (甲基硫代)乙酸
• 英文别名: (Methylmercapto)acetic acid; 2-(Methylthio)acetic acid; EINECS 219-483-6; MFCD00075444; Acetic acid, (methylthio)-; methylmercaptoacetic acid; methyl-sulfenylacetic acid; acetic acid,(methylthio); 2-(methylsulfanyl)acetic acid; (Methylthio)acetic acid; 2-methylsulfanylacetic acid; (Methylsulfanyl)acetic acid; QV1S1; Acetic acid, 2-(methylthio)-; (METHYLTHIO)ACETICACID

物化性质

• 密度: 1.2±0.1 g/cm3
• 沸点: 225.9±23.0 °C at 760 mmHg
• 熔点: 13-14 °C(lit.)
• 分子式: C₃H₆O₂S
• 分子量: 106.144
• 闪点: 90.4±22.6 °C
• 精确质量: 106.008850
• PSA: 62.60000
• LogP: 0.18
• 外观性状: 透明无色至淡黄色液体
• 蒸汽压: 0.0±0.9 mmHg at 25°C
• 折射率: 1.501
• 储存条件:

  保持容器密封，放入紧密的出藏器内，储存在阴凉，干燥的地方

• 稳定性:

  常温常压下稳定，避免氧化物接触

• 分子结构:

  1、 摩尔折射率：25.50

  2、 摩尔体积（m³/mol）：86.6

  3、 等张比容（90.2K）：223.9

  4、 表面张力（dyne/cm）：44.6

  5、 极化率（10 ^-24cm ³）：10.11

• 计算化学:

  1.疏水参数计算参考值（XlogP）:0.5

  2.氢键供体数量:1

  3.氢键受体数量:3

  4.可旋转化学键数量:2

  5.互变异构体数量:无

  6.拓扑分子极性表面积62.6

  7.重原子数量:6

  8.表面电荷:0

  9.复杂度:52.8

  10.同位素原子数量:0

  11.确定原子立构中心数量:0

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:1

• 更多:

  1. 性状：恶臭液体

  2. 密度（g/mL, ,20℃）：1.219

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：13-14

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC 27mmHg）：130-131

  7. 折射率（nD20）：1.495

  8. 闪点（ºC）：>110

  9. 比旋光度（）：未确定

  10. 自燃点或引燃温度（ºC）：>110

  11. 蒸气压（Pa,20ºC）：未确定

  12. 饱和蒸气压（kPa, 0ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：未确定

MSDS

Name: (Methylthio)acetic acid Material Safety Data Sheet Synonym: CAS: 2444-37-3 Section 1 - Chemical Product MSDS Name:(Methylthio)acetic acid Material Safety Data Sheet Synonym: Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 2444-37-3 (Methylthio)acetic acid 219-483-6 Hazard Symbols: XI Risk Phrases: 36/37/38 Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW Irritating to eyes, respiratory system and skin. Potential Health Effects Eye: Causes eye irritation. Skin: Causes skin irritation. May be harmful if absorbed through the skin. Ingestion: May cause irritation of the digestive tract. May be harmful if swallowed. Inhalation: Causes respiratory tract irritation. May be harmful if inhaled. Chronic: Not available. Section 4 - FIRST AID MEASURES Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Ingestion: Get medical aid. Wash mouth out with water. 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. Notes to Physician: Treat symptomatically and supportively. 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. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Section 7 - HANDLING and STORAGE Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Storage: Store in a cool, dry place. Store in a tightly closed container. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 2444-37-3: Personal Protective Equipment Eyes: Not available. 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: Liquid Color: Not available. Odor: stench pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: 99 - 100 deg C @4mmHg Freezing/Melting Point: 13 - 14 deg C Autoignition Temperature: Not available. Flash Point: 110 deg C ( 230.00 deg F) Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: 1.219 Molecular Formula: C3H6O2S Molecular Weight: 106.14 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Not available. Conditions to Avoid: Incompatible materials. Incompatibilities with Other Materials: Strong oxidizing agents. Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides (SOx), including sulfur oxide and sulfur dioxide. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 2444-37-3 unlisted. LD50/LC50: Not available. Carcinogenicity: (Methylthio)acetic acid - 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 Shipping Name: AVIATION REGULATED LIQUID, N.O.S.* Hazard Class: 9 UN Number: 3334 Packing Group: 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: XI Risk Phrases: R 36/37/38 Irritating to eyes, respiratory system and skin. Safety Phrases: S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 37/39 Wear suitable gloves and eye/face protection. WGK (Water Danger/Protection) CAS# 2444-37-3: No information available. Canada None of the chemicals in this product are listed on the DSL/NDSL list. CAS# 2444-37-3 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 2444-37-3 is not listed on the TSCA inventory. It is for research and development use only. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 对水是稍微有害的，不要让未稀释或大量的产品接触地下水，水道或者污水系统，若无政府许可，勿将材料排入周围环境

安全

• 符号: GHS07
• 信号词: Warning
• 危害声明: H315-H319-H335
• 警示性声明: P261-P305 + P351 + P338
• 个人防护装备: Eyeshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
• 危害码 (欧洲): Xi
• 风险声明 (欧洲): R36/37/38
• 安全声明 (欧洲): S26-S36
• 危险品运输编码: UN 3334
• WGK德国: 3
• 海关编码: 2930909090

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海关

海关编码	2930909090
中文概述	2930909090. 其他有机硫化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:30.0%
申报要素	品名, 成分含量, 用途
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%