Benzophenone-5
CAS 6628-37-1
EC 613-918-7
Formula C14H12O6S.Na
MW 329.28 g/mol
UV Absorbers & Stabilizers Personal Care & CosmeticsCoatings, Adhesives, Sealants & ElastomersPrinting & Packaging UV Protection & Stabilization
Description
Benzophenone-5 (CAS 6628-37-1) is a water-soluble UV absorber supplied as a sodium salt, also known commercially as Sulibenzone, Uvin 1MS40, Uvistat 1121, and Cyasorb UV 284. It belongs to the benzophenone class of UV filters and carries no assigned E-code.
In personal care formulations, it absorbs UVA and UVB radiation in the 270–350 nm range, protecting aqueous-based products such as sunscreens and hair care preparations from photodegradation. In water-based coatings and printing inks, it stabilises pigments and binders by intercepting UV energy before it can initiate photochemical breakdown of the substrate.
Benzophenone-5 is available as a solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm compliance with relevant cosmetic regulations, including Annex VI of EU Cosmetic Regulation 1223/2009, which governs its permitted concentration in leave-on and rinse-off products. Standard industrial packaging formats apply.
In personal care formulations, it absorbs UVA and UVB radiation in the 270–350 nm range, protecting aqueous-based products such as sunscreens and hair care preparations from photodegradation. In water-based coatings and printing inks, it stabilises pigments and binders by intercepting UV energy before it can initiate photochemical breakdown of the substrate.
Benzophenone-5 is available as a solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm compliance with relevant cosmetic regulations, including Annex VI of EU Cosmetic Regulation 1223/2009, which governs its permitted concentration in leave-on and rinse-off products. Standard industrial packaging formats apply.
Physical Properties
| Color | White to Pale Yellow |
| Form | Solid |
| Log P | 0.888 (est) |
Safety & Handling (Learn More)
Warning GHS07
H
H317
P
P261P272P280P321P501P302+P352P333+P317P362+P364
Other Names
Sodium 5-Benzoyl-4-Hydroxy-2-MethoxybenzenesulfonateUvin 1MS40SulibenzoneUvistat 1121Cyasorb UV 284Benzophenone 52-Hydroxy-4-methoxybenzophenone-5-sodium sulfonateSodium 2-hydroxy-4-methoxybenzophenone-5-sulfonate
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