UV absorber UV-9

Chemical properties

white to light yellow crystalline powder

The Uses of UV absorber UV-9

ultraviolet screen

The Uses of UV absorber UV-9

Oxybenzone is an organic compound used in sunscreens. Oxybenzone is used as an ingredient in sunscreen and other cosmetics because it absorbs UVB and short-wave UVA (ultraviolet) rays. Oxybenzone was one of the first compounds incorporated into sunscreen formulations to offer enhanced UVA protection because its absorption spectrum extends to less than 350 nm.

The Uses of UV absorber UV-9

Sunscreen. UV stabilizer

The Uses of UV absorber UV-9

oxybenzone (benzophenone-3) is the drug name for an FDAapproved uV filter and absorber.

The Uses of UV absorber UV-9

Ultraviolet light absorber and stabilizer, especially in plastics and paints.

The Uses of UV absorber UV-9

benzophenone-3 (oxybenzone) is an oil-soluble uV absorber and filter with absorption rates within the uVA and uVB peak ranges. It has an approved usage level of up to 6 percent in the united States and 10 percent in the european union. Benzophenone-3 enhances SPF and is popular among sunscreen formulators given a concern over potential safety problems associated with more traditional sunscreen chemicals. However, some reports associate it with causing photocontact allergy. It is considered a non-comedogenic raw material.

Preparation

Preparation by partial methylation of 2,4- dihydroxy-benzophenone,
? with methyl iodide in the presence of sodium hydroxide;
? with a methyl halide;
? with dimethyl sulfate in the presence of sodium hydroxide or alkaline solution.

Background

Oxybenzone is an organic compound used in sunscreens. It is a derivative of benzophenone. It forms colorless crystals that are readily soluble in most organic solvents. It is used as an ingredient in sunscreen and other cosmetics because it absorbs UV-A ultraviolet rays.

Indications

Used as an ingredient in sunscreen and other cosmetics.

Definition

ChEBI: A hydroxybenzophenone that is benzophenone which is substituted at the 2- and 4-positions of one of the benzene rings by hydroxy and methoxy groups respectively.

brand name

Uvinul M40 (BASF).

Synthesis Reference(s)

Tetrahedron, 42, p. 885, 1986 DOI: 10.1016/S0040-4020(01)87495-0

General Description

White to off-white or light yellow powder.

Air & Water Reactions

Insoluble in water.

Fire Hazard

Flash point data for Oxybenzone are not available; however, Oxybenzone is probably combustible.

Flammability and Explosibility

Non flammable

Contact allergens

BZP-3 is used as a direct sunscreen agent and in antiaging creams. Allergic reactions have been reported. Cross-reactivity is expected in an average of one in four patients photoallergic to ketoprofen.

Pharmacokinetics

Oxybenzone is an organic compound used in sunscreens. It is a derivative of benzophenone.

Safety Profile

Poison by intraperitoneal route. Mddly toxic by ingestion. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.

Metabolism

Not Available