Di-pentaerythritol

Di-pentaerythritol is a white, odorless crystalline powder with the chemical formula C(CH2OH)4, used primarily as a building block in the synthesis of alkyd resins, polyesters, and flame-retardant coatings. The material listed has a purity of 99.0% minimum, with a melting point range of 260 to 265 degrees Celsius and a moisture content below 0.3%, consistent with industrial-grade specifications. It is non-toxic and stable under normal storage conditions, making it suitable for continuous industrial use without degradation.

This compound is typically produced through the condensation of formaldehyde and pentaerythritol, resulting in a structure with four primary hydroxyl groups that enable cross-linking in polymer systems. It is commonly available in food-grade and technical-grade variants, with the version supplied here meeting the technical-grade standard for industrial polymer applications. Typical impurities include residual formaldehyde and monopentaerythritol, both controlled below 0.5% by weight in standard batches. The powder flows freely and is free from visible lumps or discoloration, indicating proper drying and handling.

End users include manufacturers of industrial coatings, adhesives, and flame-retardant plastics, particularly in automotive and construction sectors. Buyers typically order in quantities of 500 kg or more, packaged in 25 kg multi-layer paper bags with inner polyethylene lining. Trade terms offered include FOB Tianjin Port and CIF destinations in Southeast Asia and the Middle East. Lead times average 15 to 20 days after order confirmation, subject to production scheduling and vessel availability.

Tianjin Yishen International Trading Co., Ltd. operates from Nankai District, Tianjin, with a registered address at 2-1-802 Fulicheng. The company is registered as an importer and exporter of specialty chemicals, with no public information indicating manufacturing capability. Its profile shows no verified production facility, lab certifications, or quality control documentation publicly disclosed. The listing does not confirm any in-house testing, ISO registration, or direct sourcing from a specific producer.

The supplier's response rate is recorded as zero, and average response time is not available, indicating limited or no active communication through the platform. No export history, client references, or third-party audit reports are listed. Buyers should treat this entity as a trading intermediary and verify all product claims directly with the supplier before placing orders. The company's role appears to be logistical coordination rather than production or formulation.