Phenylbenzimidazole Sulfonic acid. BELGUARD PBSA by Belchem Industries is a UV-B filter that absorbs UV light between 280-340 nm to protect skin from sunburn & cancer. It consists of 2-phenylbenzimidazole-5 sulfonic acid. Due to its water solubility, it is suitable for use in sun care applications without oils and exceeding the contents of oil. This grade is used in combination with UV filters like avobenzone, titanium dioxide and zinc oxide. The recommended shelf life of BELGUARD PBSA is 2 years from the date of manufacturing.
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BELGUARD® PBSA properties
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