Overview
Methyl acetoacetate ( CAS 105-45-3 ), commonly abbreviated as MAA, is a beta-ketoester used across coatings, polymer chemistry, and flavor manufacturing. Acetoacetic acid methyl ester is a recognized alternative name buyers encounter in technical sourcing contexts.
It functions as a reactive intermediate and solvent carrier in industrial formulation. In coatings and printing inks, MAA acts as a crosslinking agent in acetoacetate-functional systems, enabling ambient-cure reactions without isocyanates.
Polymer manufacturers use it as a monomer building block to introduce reactive ester functionality into acrylic and vinyl resins. In flavor formulation, it contributes fruity, rum-like top notes to food products and is used in compounding flavor concentrates.
This chemical is essential for confectionery and beverages. Personal care formulators incorporate it as a fragrance intermediate in the synthesis of aroma chemicals used in finished cosmetic products and various consumer goods.
Methyl acetoacetate is supplied as a clear liquid in drum and IBC quantities, with bulk tanker options available for high-volume industrial buyers. It is offered in technical grade for coatings and polymer applications.
The product is also available in purity grades meeting food and flavor industry specifications. Suppliers typically provide documentation aligned with FCC and FEMA -recognized flavor ingredient requirements for global distribution.
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Physical Properties
| Melting Point | -27 °C |
| Boiling Point | 171.7 °C |
| Density | 1.0762 g/cm³ @ Temp: 20 °C |
| Flash Point | 158 °F |
| Appearance | Colorless, clear liquid |
| Color | APHA: ≤20 |
| Odor | at 100.00 %. fresh fruity citrus green |
| Form | Liquid |
| Water Solubility | 460 g/L (20 ºC) |
| Vapor Pressure | 1 hPa (20 °C) |
| Refractive Index | n 20/D 1.419(lit.) |
| pH | 3.8 (863g/l, H2O, 20℃) |
| Log P | 0.185 (est) |
Safety & Handling
Warning GHS07 Hazard Statements H227 Combustible liquid H319 Causes serious eye irritation H336 May cause drowsiness or dizziness Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29183000 |
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 105-45-3
- EC Number
- 203-299-8
- Mol. Weight
- 116.11
- HS Code
- 29183000
- Category
- Monomers & Building Blocks