Phthalic Acid Crystals from United States
Phthalic acid (1,2-benzenedicarboxylic acid) is an aromatic polycarboxylic acid used as an intermediate for phthalic anhydride production and in resins. It is a separate chemically defined compound, and its classification under heading 29.17 is confirmed by the chapter notes.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is pure phthalic acid; if it contains more than trace impurities, it may be classified elsewhere
• The crystalline form is standard and does not affect classification
• Keep a certificate of analysis to show the chemical purity if requested by the CBSA