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1.Product Name：Pyromellitic acid (PMA) 

2.CAS NO.89-05-4

3. Structural Formula: 

4. Molecular Formula: C₁₀H₆O₈ 

5. Quality indexes:

6. Packing and storageinternal:

Plastic, external woven bag ( according to the specific demand of customers); net weight is 25kg/bag,800kg/bag,stored in dry, cool place away from the heat source.