CAS · 4065-45-6
Product Overview
2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid is a high-purity catalysts-auxiliary-agent supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance | White crystalline powder |
|---|---|
| Purity | 99.5% min |
| Odour | Faint characteristic |
| Identification by UV Solution | 10 μg/ml; Medium: Water; Absorptivity do not differ by more than 3.0% |
| Melting Point | 160.0°C min |
| Dry loss | 2.0% max |
| pH | 1.20 - 2.20 |
| Gardner color | 4.0 max |
| Turbidity | 16.0 NTU max |
| Specific Extinction | At 285 nm: 460 min; At 325 nm: 290 min |
| K value | 46.0 - 50.0 |
| Heavy Metals | 5 ppm max |
| Methanol | Meet the requirements of Residual Solvents, Option 1 in USP<467> |
| Cyclohexane | Meet the requirements of Residual Solvents, Option 1 in USP<467> |
Applications
2-Hydroxy-4-methoxybenzophenone-5-sulfonic acid is a water-soluble UV filter widely used in sunscreens, cosmetic formulations, and personal care products to provide broad-spectrum protection against ultraviolet (UV) radiation. It is particularly effective in absorbing UVB rays, helping to prevent sunburn, photoaging, and UV-induced skin damage. Its water solubility makes it suitable for incorporation into lotions, creams, gels, sprays, and other aqueous-based formulations. Beyond cosmetics, it is also employed in plastics, coatings, and packaging materials to prevent UV degradation, discoloration, and loss of mechanical properties in polymeric products exposed to sunlight. Its chemical stability ensures long-lasting UV protection in both cosmetic and industrial applications.
Benefits
The benefits of this compound arise from its effective UV absorption, water solubility, and photostability. Its strong UVB absorption helps protect skin from harmful radiation, reducing the risk of sunburn, premature aging, and DNA damage. Water solubility allows formulators to create transparent and non-greasy sunscreen products, improving user experience and aesthetic appeal. Its photostability ensures that it retains UV-filtering efficacy during prolonged sun exposure, enhancing product durability. Additionally, it is compatible with other UV filters and cosmetic ingredients, enabling the development of broad-spectrum formulations that protect against both UVA and UVB rays. Its safety and efficacy profile make it a reliable and widely accepted UV filter in personal care and industrial applications.
Conclusion
In summary, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid is a versatile UV filter with applications in sunscreens, cosmetics, and UV-protective materials. Its benefits-including strong UVB absorption, water solubility, photostability, and formulation compatibility-ensure effective sun protection and product longevity. By providing reliable UV shielding and enhancing the performance of personal care and industrial products, it continues to be an essential ingredient in sunscreen formulations and UV-stabilized materials.
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