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100 Kilogram |
Negotiable |
avobenzone sunscreen sunscreen filter 70356-09-1
sunscreen active ingredients avobenzone
1.CAS:70356-09-1
2.UV absorber,high purity 99%
3.COA,MSDS,ISO
1.What is avobenzone
INCI Name: |
Abobenzone |
Synonyms: |
4-tert-Butyl-4'-methoxy-dibenzoylmethane; 1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)1,3-propanedione); 1-(4-(1,1-Dimethylethyl)phenyl)-3-(4-methoxyphenyl)-1,3-propanedione |
CAS No.: |
70356-09-1 |
EINECS No.: |
274-581-6 |
Molecular Formula: |
C20H22O3 |
Molecular Weight: |
310.39 |
Avobenzone having phenyl ketone group and sterically hindered group in one molecule, is an oil soluble sunscreen agent that absorbs a wider range of UV wavelengths. It absorbs both UV-A (380–315 nm that is associated with long term skin damage) and UV-B (315–280 nm that causes sunburn) rays. Avobenzone is known as one of the most effective sunscreen ingredient.
2.Physical data of Avobenzone
Property |
Specification |
Appearance |
White to off-white crystalline powder |
Identification |
A: Infrared Absorption 197K |
B: Ultraviolet Absorption 197U Absorptivities at 360nm do not differ by more than 3.0% |
|
Assay |
95.0%-105.0% |
Melting point |
81°C-86°C |
Loss on drying |
Max. 0.5% |
Chromatographic purity |
Any individual impurity: Max. 3.0% |
The sum of all of the impurities: Max. 4.5% |
|
Specific Gravity |
1.037-1.041 |
Acidity(mg KOH/g) |
Max. 1.0 |
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