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.
КАС НЕТ.: 70356-09-1
Химияаль Формула: С20ЧАС22О3
Molecular Weight:310.39
ИИНЭКС НЕТ.: 274-581-6
анализ: 99,0% мин.
Появление: Кристаллический порошок от белого до светло-желтого цвета.
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.
Нет | Test items | Спецификация | |
1 | Появление | 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 |
Упаковка: 20 кг/коробка или 25 кг/коробка
Регуляторный они естьтот Макс концентрация:
АСЕАН 5%, Китай 5%, Европа 5%, Япония 10%, Южная Африка 5%, США3%
Срок годности: 3 года