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99.5% PMDA 1,2,4,5-Benzenetetracarboxylic Anhydride CAS 89-32-7
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|Color||White Crystalline Powder||CAS No.||89-32-7|
|MW||218.12||Melting Point||283-286 °C(lit.)|
99.5% Pyromellitic dianhydride,
PMDA CAS 89-32-7,
1 2 4 5-Benzenetetracarboxylic Anhydride
PMDA 1,2,4,5-Benzenetetracarboxylic Anhydride CAS 89-32-7 Purity Min 99.5% For Polyimide Material
|Color||White Crystalline Powder|
|Melting Point||283-286 °C(lit.)|
Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.
Pyromellitic dianhydride (PMDA) has been used extensively as an important monomer in the preparation of a variety of thermoplastics such as polyesters, polycarbonates, polyethers polyethers, plasticizersplasticizers, expoxy resins, etc. Moreover, it is also useful in the preparation of high performance coatings that have been widely employed in many fields in our daily life beacuase of its excellent thermal, oxidative stability and excellent mechanical properties.
Pyromellitic dianhydride (PMDA) is one of several highly reactive acid anhydrides and used extensively in the production of thermoplastics and high-performance coatings. Anhydrides including PMDA are respiratory irritants and immediate-type sensitisers. Some anhydrides have been associated with occupational asthma. PMDA has also been related to occupational asthma.
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Q1: What is your regular lead time for sample and official order?
A1: Sample lead time 5-7 days. Official order lead time 14-21 days.
Q2: What is your MOQ?
A2: MOQ usually is 1kg.
Q3: How you control product quality?
A3: From raw material inspection, dupro inspection to final product inspection are executed strictly.
Q4: What is your warranty policy?
A4: We will send you a new batch if there is any quality issue during warranty time
Q5: Do you refund if customer receive defective product and do not accept replacement?