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CAS NUMBER |
4065-45-6 |
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INCI NAME |
Benzophenone-4 |
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DEFINITION |
Water-soluble UVA and UVB filter. Only short UVA (UVA-2, 290-360 nm) but not long UVA are filtered. Synonyms: Sulisobenzone, 1-phenol-4-sulfonic acid. Highly stable, does not degrade in sunlight but protects other UV blocking agents from UV-induced degradation. Benzophenone-4 is readily soluble in water, propylene glycol, glyerin, ethanol and isopropyl alcohol. Due to its high acidity (pH < 2.5 in a 1% solution), a neutralizing agent (e.g. triethanolamine) must be added to elevate the pH to >3.5. Yellow to beige powder. |
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USAGE |
It can be used incorporate into water phase (pH 1.2-2.2). Allowed use levels: USA 10% (when used alone; 5-10% when used in combination), Brazil 10%, Japan 10%, EU 5%. |
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APPLICATIONS |
Sun care products, color cosmetics with sun protection, various cosmetics & fragrances for product protection. |
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