从China供应商批发进口2,2',4,4'-Tetrahydroxybenzophenone — FOB条款

2,2',4,4'-Tetrahydroxybenzophenone is a polyhydroxybenzophenone compound supplied by Hangzhou Shitai Biotech Co., Ltd from Zhejiang, China. The listing specifies a yellow to brown crystalline powder with a density of 1.526 g/cm3 and a melting point range of 199-204°C. Its boiling point is recorded at 531.2°C at 760 mmHg, with a flash point of 289.2°C, indicating moderate thermal stability under standard handling conditions.

The compound has the HS code 2914501900 and is classified under hazard class 4.1 (flammable solids), with packing group II or III depending on the specific formulation. Safety statements S26 and S37/39 apply, meaning it requires protection from contact with eyes and skin. The refractive index is 1.718, and its vapour pressure is extremely low at 6.69E-12 mmHg at 25°C, which limits airborne exposure risk during normal storage. It is stable at room temperature when kept in tightly closed containers away from incompatible substances.

This benzophenone derivative is widely used as a UV absorber and light stabiliser in polymer formulations, coatings, and personal care products. It is also employed as a chemical intermediate in pharmaceutical and dye synthesis. Buyers in the plastics, coatings, and cosmetics industries source it for its ability to absorb UV-A and UV-B radiation. The supplier's address in Gongshu District, Hangzhou, positions it within a major fine chemicals manufacturing region. Prospective importers should confirm pricing, available quantities, and packaging options directly with Hangzhou Shitai Biotech.

Hangzhou Shitai Biotech Co., Ltd is located at #2-1214, West Business Center, Gongshu District, Hangzhou 310000, Zhejiang, China. The company operates within Hangzhou's established fine chemicals and biotech corridor. Its trust tier is classified as 'harbor', and the current listing shows a 0.00% response rate with no recorded average response time, indicating that buyers should anticipate delays in initial communication and plan enquiry timelines accordingly.

The supplier's listing provides detailed technical data for this specific compound, including physical properties, hazard classifications, and storage requirements. This level of specification detail suggests familiarity with handling and exporting specialty chemicals. However, the listing does not include pricing, MOQ, or lead time information, and no certifications are explicitly stated. Buyers should request full product documentation, including a Certificate of Analysis, Safety Data Sheet, and any available quality management certifications before proceeding with orders.