Chemical Name：[(6-Oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)methyl]butanedioic acid

Molecular formula：C₁₇H₁₅O₆P

Molecular weight：346.27

Structural formula：

CAS NO：63562-33-4

Content (HPLC)：≥99.0%

Phosphorus content：≥8.92%

Chloride ion：≤50ppm

Iron ion：≤20ppm

Appearance：White powder

Purpose：Phosphine phenanthrene cyclic phosphate esters are heterocyclic compounds of organophosphorus. It has high thermal stability, oxidation resistance and excellent water resistance. It is a reactive and additive flame retardant. Mainly used for polyester fiber, polyurethane foam plastics, thermosetting resin and adhesive. Because the flame retardant has phosphorus - carbon bond, the flame retardant property is better than ordinary phosphate ester. PET is a common polyester, which is widely used in the raw materials of synthetic fibers and engineering plastics. However, due to the flammability of polyester materials, the application is limited by flame retardant modification, which can improve the fire resistance of polyester. DDP is a new flame retardant agent, which can be used as a copolymerization combination. With excellent flame retardant performance, oxygen limit index of T30-32, low toxicity, little irritation to the skin, can be used for cars, ships, high-end hotel interior decoration; Adhesive polyester adhesive added to DDP, the generation of flame retardant polyester adhesive, good stability, heat resistance, refractory solution used as a solvent can also play a good bonding role.

Features：High melting point, good thermal stability, non-volatile type. Synthetic flame retardant slice pullable film, spinning filament, strong dyeability, after multiple washing or dry cleaning, flame retardant property does not migrate, does not decay. It has the characteristics of long time flame retardant, low smoke density, good droplet resistance and non-toxic smoke.

Storage and packaging：Store in dry, normal temperature environment, protect against moisture and heat. Packing in 25KG paper bag.