Methyl acetoacetate
- CAS No.
- 105-45-3
- Chemical Name:
- Methyl acetoacetate
- Synonyms
- MAA;METHYL 3-OXOBUTANOATE;ACM;Methylacetoacetic acid;ACETOACETIC ACID METHYL ESTER;3-OXOBUTYRIC ACID METHYL ESTER;3,6&Acetoacetic ac;METHYL ACETOAC;HYL ACETOACETATE
- CBNumber:
- CB5221273
- Molecular Formula:
- C5H8O3
Lewis structure
- Molecular Weight:
- 116.12
- MDL Number:
- MFCD00008784
- MOL File:
- 105-45-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Methyl acetoacetate for synthesis | 8.00107 | 1L | $51.9 |
| Methyl acetoacetate ReagentPlus , 99% | 537365 | 1kg | $70.8 |
| Methyl acetoacetate analytical standard | 14610 | 5ml | $65.9 |
| Methyl acetoacetate for synthesis | 8.00107 | 100mL | $22.66 |
| Methyl Acetoacetate >99.0%(GC) | A0650 | 25g | $21 |
| More product size | |||
| Melting point | -80 °C (lit.) |
|---|---|
| Boiling point | 169-170 °C/70 mmHg (lit.) |
| Density | 1.076 g/mL at 25 °C (lit.) |
| vapor density | 4 (vs air) |
| vapor pressure | 1 hPa (20 °C) |
| refractive index |
n |
| FLAVIS Number | 09.634 | Methyl acetoacetate |
| Flash point | 158 °F |
| storage temp. | 2-8°C |
| solubility | 460 g/L (20°C) |
| pka | 10.67±0.46(Predicted) |
| form | Liquid |
| color | APHA: ≤20 |
| PH | 3.8 (863g/l, H2O, 20℃) |
| Odor | at 100.00 %. fresh fruity citrus green |
| Odor Type | fruity |
| explosive limit | 1.3-14.2%(V) |
| Water Solubility | 460 g/L (20 ºC) |
| Merck | 14,6009 |
| BRN | 506727 |
| Henry's Law Constant | 6.4×100 mol/(m3Pa) at 25℃, \vS (2002) |
| Cosmetics Ingredients Functions | PERFUMING |
| InChI | 1S/C5H8O3/c1-4(6)3-5(7)8-2/h3H2,1-2H3 |
| InChIKey | WRQNANDWMGAFTP-UHFFFAOYSA-N |
| SMILES | COC(=O)CC(C)=O |
| LogP | 0.185 (est) |
| CAS DataBase Reference | 105-45-3(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | CW4I82QAX1 |
| NIST Chemistry Reference | Butanoic acid, 3-oxo-, methyl ester(105-45-3) |
| EPA Substance Registry System | Methyl acetoacetate (105-45-3) |
| UNSPSC Code | 41116107 |
| NACRES | NA.24 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H319 | |||||||||
| Precautionary statements | P305+P351+P338 | |||||||||
| PPE | Eyeshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36 | |||||||||
| Safety Statements | 26 | |||||||||
| RIDADR | NA1993 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | AK5775000 | |||||||||
| Autoignition Temperature | 536 °F | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | CBL | |||||||||
| HS Code | 29183000 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| Hazard Classifications | Eye Dam. 1 | |||||||||
| Hazardous Substances Data | 105-45-3(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 orally in rats: 3.0 g/kg (Smyth, Carpenter) | |||||||||
| Excepted Quantities | Non-Hazardous | |||||||||
| NFPA 704 |
|
Methyl acetoacetate price More Price(41)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.00107 | Methyl acetoacetate for synthesis | 105-45-3 | 1L | $51.9 | 2026-04-30 | Buy |
| Sigma-Aldrich | 537365 | Methyl acetoacetate ReagentPlus , 99% | 105-45-3 | 1kg | $70.8 | 2026-04-30 | Buy |
| Sigma-Aldrich | 14610 | Methyl acetoacetate analytical standard | 105-45-3 | 5ml | $65.9 | 2022-05-15 | Buy |
| Sigma-Aldrich | 8.00107 | Methyl acetoacetate for synthesis | 105-45-3 | 100mL | $22.66 | 2021-12-16 | Buy |
| TCI Chemical | A0650 | Methyl Acetoacetate >99.0%(GC) | 105-45-3 | 25g | $21 | 2026-04-30 | Buy |
Methyl acetoacetate Chemical Properties,Uses,Production
Chemical Properties
Colorless, clear liquid
Uses
Methyl acetoacetate (MAA) is a starting material for the syntheses of alpha-substituted aceto- acetic esters and cyclic compounds, e.g. pyrazole, pyrimidine and coumarin derivatives.
Uses
3-Oxobutanoic Acid Methyl Ester is a chemical reagent used in the synthesis of pharmaceuticals. It participates in the Biginelli reaction, forming molecules including dihydropyrimidinones.
Uses
Methyl acetoacetate is used as a chemical reagent used in the synthesis of pharmaceuticals. It participates in the Biginelli reaction, forming molecules including dihydropyrimidinones.Methyl acetoacetate (MAA) is used for the synthesis of alpha-substituted aceto- acetic esters and cyclic compounds, e.g. pyrazole, pyrimidine and coumarin derivatives.
Definition
ChEBI: Methylacetoacetic acid is an oxo carboxylic acid.
Application
Methyl acetoacetate (MAA) has been used for the following applications:
As a chemical reagent for organic synthesis and as a solvent for cellulose ethers;
As a chemical intermediate for organic compounds, used for the synthesis of nifedipine;
As a food additive, used as an amine protectant for synthetic sweeteners;
As a pharmaceutical raw material, used in the manufacture of antibiotics.
Production Methods
Methyl acetoacetate is produced by a reaction of methyl acetate with sodium methoxide.
General Description
A clear colorless liquid. Flash point 158°F. Denser than water and slightly soluble in water. Vapors heavier than air.
Air & Water Reactions
Very slightly soluble in water.
Reactivity Profile
Methyl acetoacetate is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides
Hazard
Toxic by ingestion and inhalation.
Health Hazard
May be harmful by inhalation, ingestion, or skin absorption. Causes eye irritation. May cause skin irritation.
Safety Profile
Moderately toxic by ingestion. A skin and severe eye irritant. Combustible when exposed to heat or flame. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ESTERS.
Carcinogenicity
Not listed by ACGIH, IARC, NTP, or California Proposition 65.
Methyl acetoacetate Preparation Products And Raw materials
Raw materials
Preparation Products
1of5
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8738 | 58 |
| Kindchem(Nanjing)Co.,Ltd | +86-025-025-85281586 +8618651653755 | sales@kindchem.cn | China | 1226 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 | 1026@dideu.com | China | 10000 | 58 |
| Hebei Chuanghai Biotechnology Co,.LTD | +86-86-13131129325 +8613131129325 | sales1@chuanghaibio.com | China | 5235 | 58 |
| airuikechemical co., ltd. | +86-18353166132 | sales02@airuikechemical.com | China | 983 | 58 |
| Hebei Zhuanglai Chemical Trading Co.,Ltd | +8613343047651 | admin@zlchemi.com | China | 3692 | 58 |
| Hebei Andu Technology Com.,Ltd | +86-86-17798073498 +8617798073498 | aduchemical@163.com | China | 296 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718; +8613336195806 | sales@capot.com | China | 29640 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21590 | 55 |
| Nanjing ChemLin Chemical Industry Co., Ltd. | 025-83697070 | product@chemlin.com.cn | CHINA | 3009 | 60 |
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View Lastest Price from Methyl acetoacetate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-05-02 | Methyl acetoacetate
105-45-3
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
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2026-04-30 | Methyl acetoacetate
105-45-3
|
US $0.00 / KG | 220KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | |
 |
2026-03-20 | Methyl acetoacetate
105-45-3
|
US $100.00 / Kg/Drum | 1Kg/Drum | 99%min | 200TON | Hebei Chuanghai Biotechnology Co., Ltd |
-
- Methyl acetoacetate
105-45-3
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- Methyl acetoacetate
105-45-3
- US $0.00 / KG
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- Methyl acetoacetate
105-45-3
- US $100.00 / Kg/Drum
- 99%min
- Hebei Chuanghai Biotechnology Co., Ltd
