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Avobenzone/AVB
Avobenzone/AVB
Avobenzone/AVB
Avobenzone/AVB
Avobenzone/AVB
Avobenzone/AVB
Avobenzone/AVB
  1. Avobenzone/AVB
  2. Avobenzone/AVB
  3. Avobenzone/AVB
  4. Avobenzone/AVB
  5. Avobenzone/AVB
  6. Avobenzone/AVB
  7. Avobenzone/AVB

Avobenzone/AVB

Multivalent metal cations should be avoided as they may form discolo-rations (E.g. Fe) or crystals due to lower solubility of the complexes (e.g.Al and Mg). Al coated Titanium Dioxides may lead to crystals. The combination of Avobenzone/AVB and Zinc Oxide can interact to form a complex which may precipitate out. Avobenzone/AVB is incompatible with formaldehyde donators which are mainly used as preservatives.

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CAS NO.: 70356-09-1

Chemical Formula: C20H22O3

Molecular Weight:310.39

EINECS NO.: 274-581-6

Assay: 99.0% min.

Appearance: White to light yellow crystalline powder

Avobenzone/AVB Application:

Avobenzone/AVB is oil soluble, effective UVA absorber. Adequate solubility in the formulation must be ensured in order to avoid recrystallization during storage. To maximize utilization and high performance, AVB should be properly photo-stabilized. Excellent material for stabilizations is OCT. Other additional options would be 3-(4-Methylbenzyliden) Camphor or BP-3; Use a chelating agent like EDTA.

No Test items Specification
1 Appearance White to pale yellow powder
2 Identity (IR) USP<197K> Matches reference spectrum
 

3

 Identity (Retention time) USP<621> Matches reference

retention time
 

4

 UV specific extinction:

(E 1%,1 cm at 357 nm in ethanol)

Spectrophotometry USP<197U>

 1100-1180
5 Melting point USP<741> 81.0℃~86.0℃
6 Loss on drying(%) USP<731) 0.5 max
 

7

 Chromatographic

purity

GC USP<621>

 Each impurity (%) 3.0 max
    Total impurities(%) 4.5 max
8 Assay(%)GC USP<621> 95.0～105.0
9 Residual solvents GC USP<467> Methanol (ppm) 3000  max
    Toluene (ppm) 890  max
 

 

10

 Microbial purity Total amount of aerobe 100 CFU/g max
    Total yeast and moulds 100 CFU/g max

Packaging: 20kg/Carton or 25kg/Carton

 

Regulatory status max concentration:

ASEAN 5%, China 5%, Europe 5%，Japan 10%, South Africa 5%，USA3%

 

Shelf Life: 3 years

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