4-Hydroxybenzophenone CAS 1137-42-4

1. 4-Hydroxybenzophenone CAS 1137-42-4 is widely used as a UV absorber and stabilizer in sunscreens, cosmetics, plastics, coatings, and textiles to prevent photoaging and material degradation .
2. 4-Hydroxybenzophenone serves as a key pharmaceutical intermediate for synthesizing clomifene citrate (an anti-infertility drug) and as a photoinitiator for polymerization in biomedical applications .
3. 4-Hydroxybenzophenone acts as an analytical standard in UV-Vis spectroscopy and as a building block for dyes, fragrances, and high-performance polymer modification .

1. Store 4-Hydroxybenzophenone CAS 1137-42-4 in a tightly sealed container in a cool, dry, well-ventilated place at room temperature (RT) or refrigerated (2-8°C), protected from light .
2. Keep 4-Hydroxybenzophenone strictly away from strong oxidizing agents, and avoid dust formation and contact with incompatible materials .
3. Handle 4-Hydroxybenzophenone using appropriate personal protective equipment including nitrile gloves, safety goggles, and in a fume hood to avoid breathing dust and preventing skin and eye contact .

1. Isolate the spill 4-Hydroxybenzophenone CAS 1137-42-4 area, wear full protective equipment including suitable dust mask, and sweep up solid 4-Hydroxybenzophenone into sealed, labeled containers without creating dust .
2. Prevent spilled 4-Hydroxybenzophenone from entering drains or waterways, as discharge into the environment must be strictly avoided .
3. Personnel cleaning 4-Hydroxybenzophenone spills must dispose of waste according to environmental regulations, using controlled incineration if required .

1. 4-Hydroxybenzophenone CAS 1137-42-4 causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335), with GHS signal word "Warning" .
2. 4-Hydroxybenzophenone has an oral LD50 of 12,086 mg/kg in rats, may cause damage to organs through prolonged or repeated exposure (H373), and is toxic to aquatic life with long-lasting effects (H412) .
3. 4-Hydroxybenzophenone has a flash point of 260-262°C, combustion produces toxic carbon oxides, NFPA health rating is 2 (moderate hazard), and 4-Hydroxybenzophenone is classified for transport as non-hazardous material (NONH for all modes) .