Methyl isobutyrylacetate CAS 42558-54-3

Methyl isobutyrylacetate, Promotion Season Now in Store and Free Sample for Testing with Factory Price

Chemical Name: Methyl isobutyrylacetate
CAS No.: 42558-54-3
Molecular Fomula: C7H12O3
Molecular weight: 144.17
Appearance: Colorless to light yellow liquid

Methyl 4-methyl-3-oxopentanoate CAS 42558-54-3

Description of Ambroxan

Colourless liquid. Melting point -90°C, boiling point 92°C, relative density 1.0174 (20/4°C), refractive index 1.4079, flash point 1°C. Soluble in ether, decomposes in water and alcohol.

Basic Info of Methyl isobutyrylacetate

Chemical Name

Methyl Isobutyrylacetate


Isobutyrylacetic Acid Methyl Ester;Methyl 4-methyl-3-oxovalerate (IBEM);methyl 4-methyl-3-oxopentanoate;4-Methyl-3-oxovaleric Acid Methyl Ester;IBEM.



Molecular Formula


Molecular Weight






Safety Info

Safety Statements


HS Code


WGK Germany


Risk Statements



Appearance & Physical State

colorless to yellowish liquid



Boiling Point

185.8ºC at 760 mmHg

Melting Point


Flash Point


Refractive Index


Numbering system
MDL numberMFCD00040499
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What is Methyl isobutyrylacetate?

     With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Methyl isobutyrylacetate which has developed particularly rapidly in recent years. Do you know about Methyl isobutyrylacetate?

The official answer: Colourless liquid. Melting point -90°C, boiling point 92°C, relative density 1.0174 (20/4°C), refractive index 1.4079, flash point 1°C. Soluble in ether, decomposes in water and alcohol. Derived from the reaction of isobutyric acid with sulfoxide chloride: isobutyric acid is added dropwise to sulfoxide chloride with stirring and immediately reacts to release hydrogen chloride and sulfur dioxide. After dropwise addition, continue stirring and raise the temperature to 80°C and hold for 0.5h. Distill and collect the broad fraction, then distill and collect the 92-92°C fraction to obtain the finished product.

What’s the application of Methyl isobutyrylacetate?

Used as an intermediate in organic synthesis, it is the raw material for the production of efficient photoinitiator PI-906 and PI-907. Flammable liquid. Flammable by open fire, heat, oxidizer; toxic gases containing chlorine are released by heat, moisture and water; store at low temperature and dry; store lightly and separately from oxidizers and acids; foam, carbon dioxide, 1211 extinguishing agent.


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Keywords of Methyl isobutyrylacetate

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