Benzophenone-4 CAS 4065-45-6

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CAS:4065-45-6

Molecular Formula:C14H12O6S

Molecular Weight:308.31

Appearance:Off-White Powder

EINECS:223-772-2

UV absorber BP-4 belongs to the benzophenone class of compounds. It is white or light yellow powder at room temperature, which can effectively absorb 285~325Im of ultraviolet light. It is a kind of broad spectrum ultraviolet absorber with high absorption rate, non-toxic, no photosensitization, no teratogenicity, and good light and heat stability.

Benzophenone-4, also known as 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid or UV-284, is a highly effective water-soluble UV absorber widely used in sunscreens, personal care products, and various polymer applications. It absorbs both UV-A and UV-B radiation, protecting formulations from light-induced degradation and providing reliable UV protection for skin and materials.

As a trusted benzophenone 4 manufacturer, we offer consistent quality, excellent solubility, and customized technical support for your formulations.

ITEM	STANDARD
Appearance	Off-White Powder
Purity(HPLC)	99.50%min
Melting Point Deg.C	160.0℃min
Dry loss	2.0%max
PH,1%Aqueous Solution@25C	1.20-2.20
Gardner colour(10%	4.0max
	16.0NTU max
UV absorbance E1%cm,in water at max.285nm	460min
UV absorbance E1%cm,in water at max.325nm	290min
K-Value@285nm, L/g-cm	46.0-50.0
Heavy metals as Pb	20ppm max

Recommended Dosage

Cosmetics & Skin Care: 0.1–5%
Textiles & Industrial Formulations: 0.2–1%
The optimal dosage depends on formulation type and desired UV protection level.

25kg/bag or requirement of clients. Keep it in cool space.