Trimellitic Anhydride Powder from United States
Trimellitic anhydride (1,2,4-benzenetricarboxylic acid 1,2-anhydride) is a separate chemically defined aromatic polycarboxylic anhydride used in wire enamels and polyester resins. Its structure includes an anhydride group and a carboxylic acid group, and it falls under heading 29.17 as an aromatic polycarboxylic acid derivative.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is the pure anhydride; if it is hydrated or otherwise modified, classification may change
• The powder form is standard and does not affect the tariff classification
• Keep a certificate of analysis to support the chemical identity if the CBSA requests it