Chemical and Physical Characteristics

Chemical Name 2,4-Dihydroxy-benzophenone
INCI Name: Benzophenone-1
Empirical formula C₁₃ H₁₀ O₃

Molecular weight 214.2
Appearance Pale yellow powder
Melting point (°C) 144 min.
Specific extinction 630 min. (at 290 nm in methanol)
Solubility (at 25°C)
Water practically insoluble
Methanol soluble
Ethanol soluble
Acetone slightly soluble

Applications

Benzophenone-1 is a safe and effective UV-filter with absorption ranging from 270 to 350 nm.
Benzophenone-1can be employed to improve light stability of cosmetic products such as alcoholic fragrances, gels, colors, nail enamels and liquid detergents.
Typical level of use is 0.05-0.5%.

Toxicological Information

LD₅₀ (oral) > 5000 mg/kg
Skin irritation non-irritant
Eye irritation non-irritant
(See also: C.I.R. - Final Report o­n the Safety Assessment of Benzophenones - Journal of the American College of Toxicology, Volume 2, Number 5, 1983)

Transport, Storage and Handling

Labeling: Product is not classified as hazardous according to international transport regulations.
Do not breathe dust.
Store in the original closed containers in a dry cool place. Protect from light.

Note: Compositions for sale such as sunscreen creams and lotions that make an SPF claim are regulated by the FDA as an over the counter drug. Over the counter drugs must be made according to the associated FDA monograph and all FDA regulations including registration, stability and validation must be observed.