Description
Product Overview
Ensulizole (Phenylbenzimidazole Sulfonic Acid, CAS 27503-81-7) is a unique water-soluble UVB filter (280-320nm), ideal for clear, lightweight formulations such as sun sprays, gels and daily serums. Its water solubility allows transparent protection without oily residue. Our bulk ensulizole is a white crystalline powder, GMP-produced with cosmetic-grade purity.
Physical & Chemical Properties
| Property | Specification |
|---|---|
| INCI Name | Phenylbenzimidazole Sulfonic Acid |
| CAS No. | 27503-81-7 |
| Molecular Formula | C13H10N2O3S |
| Appearance | White to off-white crystalline powder |
| UV Coverage | UVB 280-320nm, λmax ~310nm |
| Solubility | Water soluble (as salt), oil insoluble |
| Assay | ≥ 98.0% (HPLC) |
| Storage | Sealed, cool dry place, 24 months |
Key Benefits for Formulation
- Water-soluble UVB filter — transparent protection
- Ideal for clear sprays, gels and serums
- Lightweight, no white cast
- Complements oil-soluble UVB filters
- Suitable for non-greasy daily care
- Widely approved (EU 8%, FDA 4%)
Main Applications
Sun sprays, sun gels, daily UV serums, aftershave, hair care and clear formulas.
Why Choose Our Bulk Ensulizole (Phenylbenzimidazole Sulfonic Acid)
- GMP-certified production, ISO 9001 quality system
- Cosmetic-grade purity with batch-to-batch consistency
- Full COA, MSDS and third-party testing per batch
- HALAL/KOSHER certified options available
- Flexible MOQ, global export to 50+ countries
- OEM/ODM support for sunscreen, skincare and makeup lines
Recommended Usage
Typical usage 1-8% (neutralized with base before use).
FAQ About Wholesale Ensulizole (Phenylbenzimidazole Sulfonic Acid)
Q: What is the CAS?
27503-81-7.
Q: Is it water soluble?
Yes, as a neutralized salt.
Q: What UV range?
UVB 280-320nm.
Q: Is it for clear formulas?
Yes, ideal for transparent sprays and gels.
Q: Do you provide COA?
Yes, per-batch COA included.
Q: What is the MOQ?
25kg/drum; samples available.
Inquiry & Cooperation
As a professional cosmetic raw material manufacturer with 20 years of export experience, we supply high-quality Ensulizole (Phenylbenzimidazole Sulfonic Acid) at competitive bulk prices. Contact our sales team for spec sheets, COA and samples.
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