Escalol 577 is a water-soluble version of Escalol 567. Secondary UV-B absorber with activity in the UV-A region. Escalol 577 is an ingredient in some sunscreens which protects the skin from damage by UVB and short-wave UVA ultraviolet light.
Molecular Formula C14H12O6S
Molecular Weight 308.31g/mol
Appearance Light-tan powder
Specific Gravity 0.8 g/ml @25°C (bulk density)
Flash Point (°F) >212
Melting Point/Freezing Point(°F) >248(145 °C, 418 K, 293 °F)
Solubility Soluble in Water(1 g per 4 mL)
U.S. approved use level: 5-10%.
E.U. approved use level: up to 5%.
Recommended at low levels (<0.5%) as a colour protectant for products in clear packages. It is a solid having absorbance in the UV-B region with a melting point of >120 degrees C. Chemical description is Benzophenone-4.
Escalol 577 (BENZOPHENONE-4) has reported used in the following product types: styling gel/lotion; body wash/cleanser; shampoo; facial cleanser; moisturizer; conditioner; hair spray; facial moisturizer/treatment; liquid hand soap; exfoliant/scrub.
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