Pyromellitic Dianhydride Which Can Be Used as Corrosion Inhibitor

• CAS No.: 89-32-7
• Formula: C10H2O6
• EINECS: 201-898-9
• Type: Synthesis Material Intermediates
• Appearance: Crystal
• Quality: Refined
• Model NO.: PMDA
• Colour: White
• Specification: 20kg/pc
• Origin: China
• HS Code: 29173980
• Production Capacity: 20000ton/Year

Product Description

The Main Manufacturer of Pyromellitic Dianhydride/PMDA in China

Product Name	Pyromellitic Dianhydride; PMDA
Alias	1,2,4,5-Benzenetetracarboxylic dianhydride; benzene-1,2:4,5-tetracarboxylic dianhydride; PMDA
CAS No.	89-32-7
EINECS No.	201-898-9
Formula	C10H2O6
Appearance	White crystal powder
Melting point	286-288 °C
Free acid content	0.5% max
Assay	99.80% min
Application	Used for making polyimide film, resin, powdery paint, delustering agent
Capacity	20,000 ton/ year

Pyromellitic dianhydride is white or yellowish crystal. It is soluble in dimethyl sulfoxide, dimethylformamide, acetone, and other organic solvents, insoluble in diethyl ether, trichloromethane, and benzene. The product mainly functions as raw material for polyimide. It can be used in producing curing matting agent for epoxy resin and cross-linking agent for polyester resin.

Application
PMDA is mainly used to make polyimide film and resin, high temperature resistance electric insulating paint, PVC plasticizer, synthetic resin cross-linking agent and epoxy resin curing agent, powder coating matting agent, phthalocyanine blue dye and PET chain extender for food packaging.

Notes
the product is irritant to eyes, respiratory system, and skin. Wear rubber gloves, goggles, mask, and other protective articles.
Keep away from fire, source, and damp.

                                                                                                                                                                                                                                            

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