UV-A/UV-B Filter
Sunbest-B4
INCI: Benzophenone-4
Hold it The molecule in AR on a phone, in 3D anywhere else.
Open in the SPF Lab An in-silico simulator over the Sunbest range, pre-loaded with this filter.
Highlights
- A water-soluble benzophenone UV filter (UV-B peak ≈ 286 nm, with UV-A absorption).
Technical data
| INCI name | Benzophenone-4 |
|---|---|
| Also known as | B4, Ben-4, Sulisobenzone |
| IUPAC name | 5-benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid |
| CAS number | 4065-45-6 |
| EC number | 223-772-2 |
| HSN code | 29143930 |
| Type | UV-A/UV-B Filter |
| Form | Powder |
| Solubility | Water & Alcohols |
| Typical dosage | 0.1-5% (as acid); ≤10% (US) |
| UV profile | UV-B: 280-320nm, peak absorption at 286nm. UV-A: 320nm. |
| UV band | Broad-spectrum |
| Peak absorption (nm) | 286 |
| Molecular weight (g/mol) | 308.3 · Medium for a UV filter (300 to 500 g/mol) |
| pH min | 3 |
| pH max | 10 |
| Pack size (kg) | 25 |
| MOQ (kg) | 300 |
| Shelf life (years) | 3 |
| REACH registered | No |
| REACH regions | - |
| REACH tonnage band | - |
Applications
- Sunscreens & SPF Products
- Foundations & BB Creams
- Lip Care (Balms, Lipsticks)
Frequently asked
What is Sunbest-B4?
Sunbest-B4 is UV-A/UV-B filter, INCI name Benzophenone-4 (CAS 4065-45-6), supplied by Vinner Labs for sunscreens & SPF products.
What is the typical use level of Sunbest-B4?
The typical dosage of Sunbest-B4 is 0.1-5% (as acid); ≤10% (US) in finished formulations. Exact levels depend on the application and regional regulations.
What is Sunbest-B4 soluble in?
Sunbest-B4 is soluble in: Water & Alcohols.
Related ingredients
Samples & documentation
Request a sample, spec sheet, quotation or regulatory statement for Sunbest-B4, ask a specialist.