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产品名称 Product Name |
乙酰乙酸甲酯 / Methyl Acetoacetate(β-丁酮酸甲酯、3-丁酮酸甲酯、乙酰醋酸甲酯 / Methyl 3-oxobutanoate, Acetoacetic acid methyl ester, MAA) |
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别名 Synonyms |
β-丁酮酸甲酯、3-丁酮酸甲酯、乙酰醋酸甲酯 / Methyl 3-oxobutanoate, Acetoacetic acid methyl ester, MAA |
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化学式 Formula |
C₅H₈O₃ |
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分子量 Molecular Weight |
116.12 g/mol |
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CAS 登记号 CAS No. |
105-45-3 |
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EC / EINECS 号 |
203-299-8 |
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食品添加剂号 E-Number |
— |
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海关编码 HS Code |
2918.30 |
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PubChem CID |
7757 |
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InChIKey |
WRQNANDWMGAFTP-UHFFFAOYSA-N |
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主要用途 Primary Use |
农药、医药、染料中间体,纤维素醚溶剂,高分子稳定剂 / Agrochemical, pharma & dye intermediate, solvent |
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主要成分 Main Component |
乙酰乙酸甲酯 C₅H₈O₃ ≥ 99.0%(工业级)/ Methyl acetoacetate C₅H₈O₃ ≥ 99.0% (industrial grade) |
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杂质 Impurities |
水分、酸度(以乙酸计)、色度(APHA)/ Moisture, Acidity (as acetic acid), Color (APHA) |
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外观 Appearance |
无色透明液体,具酯类芳香气味 / Colorless clear liquid with fruity/ester-like odor |
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分子量 MW |
116.12 g/mol |
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熔点 MP |
−80 °C(文献值);以实测 COA 为准 / −80 °C (lit.), per batch COA |
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沸点/分解 BP / Decomp. |
169-170 °C(70 mmHg);常压沸点约 166 °C / 169-170 °C @70 mmHg; ~166 °C at atm. pressure |
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密度 Density |
1.076 g/mL @ 25 °C |
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水中溶解度 Solubility (H₂O) |
可溶:约 40-46 g/100 mL @ 20 °C / Soluble ~40-46 g/100 mL @20 °C |
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其他溶剂溶解度 in other |
与乙醇、乙醚混溶;微溶于水 / Miscible with ethanol & ether; slightly soluble in water |
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pH |
约 3.8(863 g/L 水溶液,20 °C)/ ~3.8 (863 g/L aq., 20 °C) |
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pKa |
≈ 10.7(预测值)/ ~10.7 (predicted) |
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晶体结构 Crystal Structure |
—(液态) / Liquid |
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折射率 Refractive Index |
nD ≈ 1.419(20 °C) |
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吸湿/潮解 Hygroscopicity |
不吸湿,但可燃 / Non-hygroscopic; combustible liquid |
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项目 Item |
典型值 Typical |
测试方法 Method |
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含量 Assay |
≥ 99.0% |
GC / Titration |
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水分 Water |
≤ 0.10% |
Karl Fischer |
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酸度(以乙酸计)Acidity |
≤ 0.10% |
滴定 / Titration |
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色度 Color (APHA) |
≤ 20 |
比色 / Colorimetry |
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密度 Density |
1.076 – 1.080 g/mL |
密度计 / Densitometer |
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折射率 Refractive index |
1.418 – 1.420 (nD²⁰) |
阿贝折射仪 / Refractometer |
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闪点 Flash point |
≥ 70 °C(闭杯) |
GB/T 261 / ASTM D93 |
Agrochemical intermediate: active ingredients for insecticides, fungicides, herbicides
Pharmaceutical intermediate: cardiovascular, antibacterial drugs
Dyes & pigments: azo dyes, pyrazolone intermediates
Polymer auxiliaries: cellulose-ether solvent, resin stabilizer
Organic synthesis: acetoacetic ester condensation, cyclization
Solvent for cellulose ethers, resin stabilization
Store sealed in cool, dry, ventilated place; away from ignition, heat, oxidizers
Keep container closed; avoid moisture pick-up and volatilization
Wear gloves, goggles, respirator/mask when handling
Manage as flammable liquid; contain spills with sand/inert absorbent
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GHS 分类 GHS Classification |
GHS05(腐蚀/眼损伤)/ GHS07;眼损伤/刺激 / GHS05/GHS07; eye damage/irritation |
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危害声明 H-statements |
H318 造成严重眼损伤;部分来源列为 H319 严重眼刺激 / H318 serious eye damage; some sources H319 eye irritation |
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防范说明 P-statements |
P264, P280, P305+P351+P338, P310, P337+P313 |
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NFPA 704 |
健康 Health 2 / 易燃 Flammability 2 / 反应 Reactivity 0 |
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急性毒性 Acute Toxicity |
低毒:LD₅₀(大鼠,经口) ≈ 3000 mg/kg / Low toxicity: LD₅₀(oral,rat) ≈ 3000 mg/kg |
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危险反应 Hazardous Reaction |
与强氧化剂反应;受热分解释放刺激性气体 / Reacts with oxidizers; decomposes on heating |
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灭火 Fire-fighting |
可燃液体;用泡沫、干粉、CO₂、砂土灭火;禁止直流水柱 / Combustible liquid; foam, powder, CO₂, sand |
200 kg / 220 kg 闭口钢桶或塑料桶;IBC 吨桶可定制。 200/220 kg drums; IBC on request.
在原包装、阴凉密封条件下 12 个月。 12 months in original sealed, cool storage.
Industrial use as flammable liquid; confirm export class per destination
CAS 105-45-3 / EC 203-299-8; EU exports subject to importer REACH
Transport class (e.g. UN 1993) per latest SDS / IATA / IMDG
免责声明 / Disclaimer:本技术数据表仅供参考,不构成任何担保。数据基于编制时可得的公开信息,重庆广益化工有限公司不对因使用本表所产生的任何后果承担责任。实际技术参数请以每批次出厂 COA 为准。 This TDS is for reference only and does not constitute a warranty. Values per batch COA prevail.
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