Pyromellitic Dianhydride

• Post Date:

  Feb 27,2020

• Expiry Date:

  Aug 25,2020

• Detailed Description:

  Cas No. :89-32-7

  Pyromellitic dianhydride(PMDA)

  Pyromellitic dianhydride(PMDA) is mainly used as extinction curing agent, polyimide resin and film, high temperature resistant electrical insulating paint, solid lubricant, epoxy resin curing agent, plasticizer and crosslinking agent of polyester resin in powder coatings.

  Product performance

  It is white or yellow solid crystal powder, with relative density of 1.68, soluble in acetone, dimethylacetamide and other solvents.

  Product quality index

  Powder PMDA

  Melting point: 284~287℃ 

  Content: ≥ 99%

  Neutralization equivalent: 54.5 + 0.2

  Particle size: 99% < 150um

  Superfine PMDA

  Melting point: 284~287℃ 

  Content: ≥ 99%

  Neutralization equivalent: 54.5 + 0.2

  Particle size: 99% < 10um

  BOPI grade PMDA

  Melting point: 284-287℃

  Content: ≥99%

  Neutralization equivalent: 54.5 0.2

  Particle size: below 150um < 20%    above 850um < 2%.

  Packaging and transportation

  Packaging: The product is packed in double layers with plastic film inside and cardboard outside. It can be packaged in net weight of 25 kg to 200 kg according to customers' needs.

  Storage: store in a dry and ventilated place to prevent moisture deterioration.

• CAS Registry Number:

  89-32-7

• Synonyms:

  ;Pyromellitic dianhydride;1,2,4,5-Benzenetetracarboxylic dianhydride;benzene-1,2:4,5-tetracarboxylic dianhydride;PMDA;1H,3H-benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone;Pyromellitic Dianhydride;

• Molecular Formula:

  C₁₀H₂O₆

• Molecular Weight:

  218.1193

• Molecular Structure:

  

• Hazard Symbols:

   Xn:Harmful;
  

• Risk Codes:

  R41:;
  R42/43:;
  

• Safety Description:

  S22:;
  S24:;
  S26:;
  S37/39:;
  

• Company:

  Puyang Long De Young New Material Co., Ltd.     [ China ]        

• Contact:

  Manager Zhao

• Tel:

  086-393-3267711

• Fax:

  086-393-3267711

• Email:

  Adam.zhao@pyldy.com