Pmda

Name 1, 2, 4, 5-Benzenetetracarboxylic anhydride (PMDA) Cas 89-32-7 Structure form Physical and chemical properties pmda is white to light yellow powder or block crystal. Its specific gravity is 1.68.It can be sissolved in organic solvents such as acetone and dimethylacetamide. Quality standard item Standard Appearance: White to light yellow powder or block crystal Content: 99.5% Melting point: 284-287 Neutralization equivalent: 54.50.2 Expatiate the larger scale pmda production lines in china with advanced technology and continuous catalytic gas-phase oxidation process.Complete measures of test and analysis guarantee the stable and reliable product quality.Pmda is produced in several grades to meet specific market requirements and is sold worldwide. Applications the main applications of pmda if to produce polyimide resin and bi-oriented polyimide sheets, gloss retaining and curing agent for powder coating, high temperature-resistant electrical insulating enamel, solid lubricant, solidifying agent fo epoxy resin, plasticizer and crosslinking agents for polyester resins.Etc. Packaging & storage double packed in paper fibre drums lined with plastic bage, net weight:25kgs to 200kgs according to customers'requirment.Keep in dry and well ventilated place, protected from moisture.

Supplier: M-chloroaniline, 4, 7-dichloroquinoline, 1, 2, 4, 5-benzenetetracarboxylic anhydride (PMDA)

Fine chemical: M-Chloroaniline. CAS 108-42-9 Structure Form Physical and Chemical Properties 1). Colourless liquid to light yellow liquid,The liquid will be getting deep in colour when it meets litht and when it is stored. 2). Proportion:1.216 3). Solidifying Point:-10.4 4). Boiling point:228-231 5). To be able to solve in water silightly. 6). To be able silithtly to solve in alcohol and ether as well as acid Quality Standard Item Standard Appearance Colourless liquid to litht ellow liquid Fraction when the boiling point is within 228-231oC Content: 99.5% Flash point : 118 Solidifying Point: 10.8-10.3 Transportation & Storage: The product should not be near to the fire when it si transported and store.It should be put in a shady,cool and dry,avoiding sunshine.And it should be put down and taken up gently when transporting.In view of the reason that meat-chloroaniline has got toxin,it cannot touch skin with it when using it.Once it touch skin,please wash it out with water at once.The labour repotecting clothes must be worn when using it. Applications The product belongs to midium product or medicine,argricultural chemical,dyes,and light industry. Package 200kg or 250kgin a galvanized iron barrel,also can be packeted in accordance with special requirements which are needed by users.

Name 4,7-Dichloroquinoline CAS 86-98-6 Structure Form Quality Standard Item Standard Appearance : pale yellow crystal solid Content: 98.5%£¨GC£© 4,5-Dichloroquinoline: 1.0 Moisture: 2% Synthetic method 4,7-dichloroquinoline is produced with quantitative quinolinic acid as raw material through dehydrogenation and chlorination. Storage store at dry warehouse, 25kg/hard paper board drum lined with plastic film.