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.

CAS number: 27503-81-7  ·  INCI: Ensulizole (Phenylbenzimidazole Sulfonic Acid) | CAS 27503-81-7

Key Benefits

• Key Benefits for Formulation</h2>
• <li>Water-soluble UVB filter — transparent protection</li>
• <li>Ideal for clear sprays, gels and serums</li>
• <li>Lightweight, no white cast</li>
• <li>Complements oil-soluble UVB filters</li>
• <li>Suitable for non-greasy daily care</li>
• <li>Widely approved (EU 8%, FDA 4%)</li>

Main Applications

• Main Applications</h2>
• <p>Sun sprays, sun gels, daily UV serums, aftershave, hair care and clear formulas.</p>

Recommended Use Levels

Use levels depend on the finished-product category and the target claim. Contact our technical team for grade-specific guidance and samples.

EU & Regulatory Notes

Cosmetic ingredients supplied for EU markets must be used in compliance with Regulation (EC) No 1223/2009 on cosmetic products. Always verify the current Annex status and concentration limits for your finished product and market before launch; Aogubio provides full documentation (COA, SDS, technical data) to support your registration and safety assessment.

Why Buy Bulk Ensulizole (Phenylbenzimidazole Sulfonic Acid) | CAS 27503-81-7 from Aogubio?

• GMP-certified manufacturing: consistent quality from raw material to finished ingredient
• Complete documentation: COA, SDS and heavy metal test reports with every batch
• Flexible supply: samples to full container loads, MOQ from 1 kg
• Export experience: reliable shipping to EU, North America and Asia

FAQ

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

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?
25k

What is the MOQ?

25kg/drum; samples available.

View the Ensulizole (Phenylbenzimidazole Sulfonic Acid) | CAS 27503-81-7 product page for specifications and to request samples.

Aogubio Co., Ltd (Imaherb) is a GMP-certified manufacturer of bulk ingredients. Every batch ships with COA, MSDS and heavy metal test reports.