• 乙酰乙酸甲酯  Methyl Acetoacetate,Chongqing Guangyi Chemical Co., Ltd,乙酰乙酸甲酯  Methyl Acetoacetate
  • 乙酰乙酸甲酯  Methyl Acetoacetate,Chongqing Guangyi Chemical Co., Ltd,乙酰乙酸甲酯  Methyl Acetoacetate

乙酰乙酸甲酯 Methyl Acetoacetate

No.CAS 105-45-3
Methyl acetoacetate is an important organic synthetic intermediate. It is widely used for manufacturing pharmaceuticals, pesticides and dyestuffs. It also serves as a raw material for food flavoring agents, metal chelating agents and polymer additives.
Download
View all downloads
  • 乙酰乙酸甲酯  Methyl Acetoacetate,Chongqing Guangyi Chemical Co., Ltd,乙酰乙酸甲酯  Methyl Acetoacetate

Description

  1. 产品标识 / Product Identification

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)

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

化学式 Formula

C₅H₈O₃

分子量 Molecular Weight

116.12 g/mol

CAS 登记号 CAS No.

105-45-3

EC / EINECS 号

203-299-8

食品添加剂号 E-Number

海关编码 HS Code

2918.30

PubChem CID

7757

InChIKey

WRQNANDWMGAFTP-UHFFFAOYSA-N

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



  1. 组分信息 / Composition

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)

杂质 Impurities

水分、酸度(以乙酸计)、色度(APHA)/ Moisture, Acidity (as acetic acid), Color (APHA)



  1. 理化性质 / Physical & Chemical Properties

外观 Appearance

无色透明液体,具酯类芳香气味 / Colorless clear liquid with fruity/ester-like odor

分子量 MW

116.12 g/mol

熔点 MP

−80 °C(文献值);以实测 COA 为准 / −80 °C (lit.), per batch COA

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

密度 Density

1.076 g/mL @ 25 °C

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

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

pH

约 3.8(863 g/L 水溶液,20 °C)/ ~3.8 (863 g/L aq., 20 °C)

pKa

≈ 10.7(预测值)/ ~10.7 (predicted)

晶体结构 Crystal Structure

—(液态) / Liquid

折射率 Refractive Index

nD ≈ 1.419(20 °C)

吸湿/潮解 Hygroscopicity

不吸湿,但可燃 / Non-hygroscopic; combustible liquid



  1. 典型产品规格 / Typical Product Specifications (Industrial Grade)

项目 Item

典型值 Typical

测试方法 Method

含量 Assay

≥ 99.0%

GC / Titration

水分 Water

≤ 0.10%

Karl Fischer

酸度(以乙酸计)Acidity

≤ 0.10%

滴定 / Titration

色度 Color (APHA)

≤ 20

比色 / Colorimetry

密度 Density

1.076 – 1.080 g/mL

密度计 / Densitometer

折射率 Refractive index

1.418 – 1.420 (nD²⁰)

阿贝折射仪 / Refractometer

闪点 Flash point

≥ 70 °C(闭杯)

GB/T 261 / ASTM D93


  1. 用途 / Applications
  • 农药中间体:合成杀虫剂、杀菌剂、除草剂活性成分

Agrochemical intermediate: active ingredients for insecticides, fungicides, herbicides

  • 医药中间体:心血管、抗菌等药物合成

Pharmaceutical intermediate: cardiovascular, antibacterial drugs

  • 染料与颜料:偶氮染料、吡唑啉酮类中间体

Dyes & pigments: azo dyes, pyrazolone intermediates

  • 高分子助剂:纤维素醚溶剂、树脂稳定剂

Polymer auxiliaries: cellulose-ether solvent, resin stabilizer

  • 有机合成:乙酰乙酸酯缩合、环化反应

Organic synthesis: acetoacetic ester condensation, cyclization

  • 溶剂(纤维素醚、树脂稳定)

Solvent for cellulose ethers, resin stabilization

  1. 储存与操作 / Storage & Handling
  • 阴凉、干燥、通风处密封保存,远离火源、热源与氧化剂

Store sealed in cool, dry, ventilated place; away from ignition, heat, oxidizers

  • 保持容器密闭,避免吸湿与挥发

Keep container closed; avoid moisture pick-up and volatilization

  • 操作时佩戴防护手套、护目镜、防毒面具/口罩

Wear gloves, goggles, respirator/mask when handling

  • 按易燃液体管理;泄漏用砂土/惰性吸附材料收容

Manage as flammable liquid; contain spills with sand/inert absorbent

  1. 安全信息 / Safety Information

GHS 分类 GHS Classification

GHS05(腐蚀/眼损伤)/ GHS07;眼损伤/刺激 / GHS05/GHS07; eye damage/irritation

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

防范说明 P-statements

P264, P280, P305+P351+P338, P310, P337+P313

NFPA 704

健康 Health 2 / 易燃 Flammability 2 / 反应 Reactivity 0

急性毒性 Acute Toxicity

低毒:LD₅₀(大鼠,经口) ≈ 3000 mg/kg / Low toxicity: LD₅₀(oral,rat) ≈ 3000 mg/kg

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

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


  1. 包装 / Packaging

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.

  1. 保质期 / Shelf Life

在原包装、阴凉密封条件下 12 个月。 12 months in original sealed, cool storage.

  1. 法规与合规 / Regulatory & Compliance
  • 工业用途按易燃液体管理;出口按目的国危化/普通化工品法规确认

Industrial use as flammable liquid; confirm export class per destination

  • CAS 105-45-3 / EC 203-299-8;欧盟出口须满足进口方 REACH 义务

CAS 105-45-3 / EC 203-299-8; EU exports subject to importer REACH

  • 具体运输分类(UN 1993 等)请以最新 SDS / IATA / IMDG 为准

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.

© 2026 Chongqing Guangyi Chemical Co., Ltd.