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Item No :
Full DetailsOrder(MOQ) :
100kgsProduct Origin :
ChinaColor :
White to pale yellowShipping Port :
Shanghai, ChinaLead Time :
2-3 weeksWeight :
25kgCas No. :
- β-Arbutin: 497-76-7 - α-Arbutin: 84380-01-8Molecular Formula :
C₁₄H₁₂O₆SAppearance :
White to pale yellow crystalline powder, uniform texture with no visible impuritiesAssay :
≥ 99.0% (HPLC)Application :
Sunscreen & Skincare Product Protection Industrial Uses Hair Care
Benzophenone-4 (CAS 4065-45-6), also known as Sulisobenzone or UV absorber UV-284, is a highly effective, water-soluble broad-spectrum UV filter.
It can efficiently absorb and protect against UVB and short-wave UVA rays, shielding skin from UV-induced damage.
In addition, it stabilizes other ingredients in formulations (such as pigments, fragrances and active compounds), preventing them from degrading or fading under light exposure.
As a globally recognized sunscreen raw material, Benzophenone-4 is widely used in sun care cosmetics, skin and hair care products, toiletries, and other functional personal care products.
As a professional source manufacturer, we provide high-purity Benzophenone-4 products and support stable bulk supply for global customers.
Core Advantages
1. Excellent Water Solubility & Flexible Formulation
Benzophenone-4 is one of the few water-soluble UV absorbers, which can be directly added to the aqueous phase, simplifying the production process. It is highly suitable for transparent water-based sunscreen products.
2. Broad-Spectrum Protection & High Absorption Efficiency
It offers high UV absorption efficiency, covering UVB and short-wave UVA to provide full broad-spectrum sun protection.
Its maximum absorption peaks are near 285 nm and 326 nm.
3. Multi-Functional Protection
It provides three functions in one: UV filter, light stabilizer and product stabilizer, delivering multi-effects with controllable overall cost.
4. Globally Approved & Widely Used in Mature Markets
China: Approved for use in accordance with the Safety Technical Specifications for Cosmetics.
US & Canada: Maximum permitted concentration is 10%.
EU: Maximum permitted concentration is 5% (as acid). After re-evaluation by the EU SCCS in 2023, Benzophenone-4 is confirmed safe for use in sunscreens, face creams, lipsticks, hand creams and spray products at 5% concentration.
5. Outstanding Technical Properties
High Light Stability: Stable under UV radiation, providing long-lasting protection.
High Thermal Stability: Stable under normal production and storage conditions.
Gel Stabilizer: Helps stabilize the viscosity of polyacrylic acid-based gels under UV exposure.
Technical Specifications
| Item | Typical Specifications | Test Standard/Remarks |
| Product Name | Benzophenone-4 | Also known as Sulisobenzone, BP-4, UV Absorber UV-284 |
| INCI Name | Benzophenone-4 | —— |
| CAS No. | 4065-45-6 | Core product identification code |
| Molecular Formula | C₁₄H₁₂O₆S | —— |
| Molecular Weight | 308.31 | —— |
| Appearance | White to pale yellow crystalline powder | —— |
| Assay (HPLC) | ≥ 99.0% | —— |
| Melting Point | ≥ 140°C / 110–120°C (varies by standard) | —— |
| pH Value (1% aqueous solution) |
1.2 – 2.2 |
Aqueous solution is acidic |
| Loss on Drying |
≤ 3.0% |
—— |
| Solubility |
Soluble in water |
Water solubility is its core advantage |
| Specific Absorptivity (285 nm) |
≥ 460 |
Key indicator of UV absorption capacity |
| Specific Absorptivity (325 nm) |
≥ 290 |
Key indicator of UV absorption capacity |
| Heavy Metals (as Pb) |
≤ 5 ppm |
—— |
Key Application
1. Sunscreen Cosmetics: Broad-Spectrum UV Absorber
Benzophenone-4 is a broad-spectrum UV absorber that effectively absorbs UVB and short-wave UVA to protect skin from photodamage.
Sunscreens, lotions and sprays: Used as a primary or secondary UV filter to deliver broad-spectrum protection. Recommended dosage: 0.2%–5%.
Daily care products: Added to day creams, foundations, BB creams to provide basic daily UV protection.
Synergistic effect: When combined with oil-soluble UV filters (such as BP-3, OMC), it helps achieve high SPF values and build efficient sun protection systems.
2. Product Protection: Light Stabilizer
Benzophenone-4 not only protects skin, but also stabilizes cosmetic products against UV degradation.
Hair care products: Prevents fading of natural and synthetic hair dyes caused by sunlight, prolonging color retention.
Fragrance protection: Stabilizes fragrances and active ingredients, preventing photodegradation and oxidation.
Color protection: Protects colorants in formulations from fading under UV exposure.
Package protection: Used in transparent plastic packaging to prevent product deterioration caused by light.
3. Skin Care & Household Products
Creams and lotions: Added to various skincare products to improve light stability.
Detergents: Used in laundry liquids to help protect clothing color from fading.
4. Other Industrial Applications
Textile treatment: Applied to natural fibers such as wool to reduce photosensitivity.
UV-curable inks and coatings: Used as a photoinitiator in UV curing processes for the printing industry.
FAQ: Benzophenone-4
1. What is Benzophenone-4?
Benzophenone-4 (CAS 4065-45-6), also called Sulisobenzone or UV-284, is a water-soluble, broad-spectrum UV absorber widely used in cosmetics, personal care, and industrial products. It protects against UVB and short-wave UVA, and also acts as a light stabilizer.
2. What is the function of Benzophenone-4?
Absorbs UVB and short-wave UVA to protect skin from sun damage.
Works as a light stabilizer to prevent pigments, fragrances, and actives from fading or degrading.
Improves the stability of formulas and products under sunlight.
3. Is Benzophenone-4 water-soluble or oil-soluble?
Benzophenone-4 is water-soluble, making it very suitable for water-based, transparent, gel and aqueous sunscreen products.
4. What is the recommended usage rate in cosmetics?
The typical addition rate in cosmetics is 0.2%–5%, which complies with global regulations.
5. What is the max allowed concentration worldwide?
EU: up to 5% (as acid)
USA & Canada: up to 10%
China: approved in Safety Technical Specifications for Cosmetics
6. Can Benzophenone-4 be used with other UV filters?
Yes. It can be combined with oil-soluble UV filters (such as BP-3, OMC) to achieve higher SPF and form a full broad-spectrum sunscreen system.
7. What products can use Benzophenone-4?
Sunscreens, sprays, day creams, foundations, BB creams
Shampoos, hair dyes, hair care products
Lotions, creams, toiletries and detergents
Textiles, UV inks and coatings
8. Is Benzophenone-4 safe for cosmetics?
Yes. It has been re-evaluated by EU SCCS in 2023 and confirmed safe for use in sunscreens, creams, lipsticks, hand creams and sprays at permitted concentrations.
9. What are the main advantages of Benzophenone-4?
Water-soluble, easy to formulate
Broad-spectrum UV protection
Good light and heat stability
Acts as both UV absorber and light stabilizer
Approved by major global regulations
10. Do you supply bulk Benzophenone-4?
As a source manufacturer, we supply high-purity Benzophenone-4 with complete COA and regulatory documents, supporting stable bulk supply and global export.
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