Benzophenone-1
CAS 131-56-6
EC 205-029-4
Formula C13H10O3
MW 214.22 g/mol
UV Absorbers & Stabilizers Personal Care & CosmeticsPlastics & PolymersCoatings, Adhesives, Sealants & ElastomersPrinting & Packaging Antioxidant & StabilizerUV Protection & StabilizationCross-linking & Curing
Description
Benzophenone-1 (CAS 131-56-6), also known as DHB, UV 12, Uvinul 400, and SYNSORB, is a hydroxybenzophenone UV absorber used across industrial and personal care formulations. It carries no assigned E-code and is registered under EC number 205-029-4.
In coating and polymer systems, Benzophenone-1 absorbs UV radiation in the 280–340 nm range, converting photon energy to heat and preventing substrate degradation. In adhesive and sealant formulations, it functions as both a photoinitiator and crosslinker, contributing to cure efficiency and long-term oxidative stability.
Benzophenone-1 is supplied as a yellow crystalline powder and is subject to REACH registration requirements within the EU. Procurement teams should note its restricted status in leave-on cosmetic applications under EU Cosmetics Regulation 1223/2009. Standard packaging follows industrial bulk conventions; buyers should confirm available lot sizes and documentation at point of inquiry.
In coating and polymer systems, Benzophenone-1 absorbs UV radiation in the 280–340 nm range, converting photon energy to heat and preventing substrate degradation. In adhesive and sealant formulations, it functions as both a photoinitiator and crosslinker, contributing to cure efficiency and long-term oxidative stability.
Benzophenone-1 is supplied as a yellow crystalline powder and is subject to REACH registration requirements within the EU. Procurement teams should note its restricted status in leave-on cosmetic applications under EU Cosmetics Regulation 1223/2009. Standard packaging follows industrial bulk conventions; buyers should confirm available lot sizes and documentation at point of inquiry.
Physical Properties
| Melting Point | 142 °C |
| Boiling Point | 194 °C @ Press: 1 Torr |
| Density | 1,32 g/cm 3 |
| Flash Point | 125 °C |
| Appearance | yellow crystalline powder |
| Color | Yellow |
| Form | Crystalline Powder |
| Water Solubility | insoluble |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | 1.5090 (estimate) |
| pH | 5 (10g/l, H2O, 20℃)(slurry) |
| Log P | 2.964 at 25℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H315H319H335
P
P261P264P271P280P319P321P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29145000 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
(2,4-dihydroxyphenyl)-phenylmethanoneBenzoresorcinol(2,4-dihydroxyphenyl)(phenyl)methanoneDHBUF 1DHBPUV 12SYNSORBUvinul 400
Related Products
Raw Materials
Derivatives
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