Avobenzone powder Raw Materials CAS 70356-09-1

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Uses and synthesis of Avobenzone powder

There are many kinds of ultraviolet absorbers, among which phenyl ketone ultraviolet absorbers are widely used, and this kind of absorber has great practical research value.

Avobenzone powder belongs to phenyl ketone UV absorber, Avobenzone CAS 70356-09-1 is also a very important organic synthesis intermediate.

Applications / Functions of Avobenzone powder

Avobenzone Raw Materials is a synthetic ultraviolet absorber, is a good UV-A (＞320nm) type ultraviolet absorber, can block the full band (320 ~ 400nm) of UVA, as a highly efficient broad-spectrum oil-soluble UVA filters, Avobenzone powder and other UVB sunscreen compound, can provide full UVA and UVB protection. Avobenzone powder, when combined with other UVB sunscreens, can provide full UVA and UVB protection for the prevention of photogenic skin cancer.

Physicochemical Property of Avobenzone powder

Mild anionic emulsifier/stabiliser of O/W type, easy to handle and form. Suitable for PH3-9 range and sunlight release system.

Production methodprocess of Avobenzone powder

At present, the main methods of synthesising Avobenzone CAS 70356-09-1 are as follows:

• ①Condensation and addition elimination hydration method, that is, p-methoxyacetophenone and p-tert-butylbenzaldehyde through condensation, bromine addition, elimination into the alkyne, hydration to get the product, the yield is 58%, the method of the route is long, the cost is high, the yield is low;
• ② Claisen ester condensation method, that is, p-methoxyacetophenone and p-tert-butyl benzoic acid methyl ester reaction, the yield is 63.6%, the method is low cost, easy to operate, but the yield is low;
• (iii) aldehydes and ketones condensation method, that is, p-methoxyacetophenone and p-tert-butylbenzaldehyde through the condensation of alcohol, oxidation to obtain, the yield is 34.6%, the method is easy to operate, high cost, low yield.

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