Butyl Methoxydibenzoylmethane

Basic Info:

  • Chemical Synonym(s): 2-ethylhexyl (E)-3-(4-methoxyphenyl)prop-2-enoate;
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  • CAS Number: 70356-09-1
  • Chemical Formula:
  • MSDS: Download


Boiling Point
Flash Point
Refractive Index
Melting point
81-84 °C
Boiling point
463.6±35.0 °C(Predicted)
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Butyl Methoxydibenzoylmethane is also known as Avobenzone. Butyl Methoxydibenzoylmethane is the generic name that is used for a substance.

It is a class of compounds known as dibenzoyl methane and can be prepared by esterifying 4-hydroxybenzoic acid with di-n-butyl malonate.

It is a clear liquid (or oil) that ranges from colorless to pale yellow, and it has a very faint smell. Chemical reactions can produce it. It absorbs UVB rays and prevents sunburns.

It degrades relatively quickly when it is exposed to UV light. It absorbs UV-B radiation and converts it into harmless infrared rays. It is prepared by alkylating para-methoxy benzoic acid (PMB) with butyl alcohol.  It is volatile.


Butyl Methoxydibenzoylmethane is a common ingredient used in all kinds of skincare products. It is or may be used as a UV filter or as an ingredient in other applications.

It can find it in sunscreen, moisturizers, and foundations. This fatty acid ester is used as a UV absorber for sunscreens, hair care products, and cosmetics to protect your skin from harmful UV light.

It is considered a more effective ingredient than some other UV filters like octocrylene, used in many sunscreens. A related compound, benzophenone-3, is used in most UV absorbers to achieve high SPF. It is found in almost all cosmetic products, so it can be called universal.

It is also used to make liquid crystals for liquid crystal displays (LCD). It can use it in different applications like sun protection, product stabilization, fragrance. It is also used in food products like an emulsifier, antioxidant, flavoring agent, solvent etc.

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