Triethyl Phosphite with MEHQ Inhibitor from United States
Triethyl phosphite inhibited with 4-methoxyphenol (MEHQ) to prevent polymerization. Per Chapter Note 1(f), the addition of a stabilizer necessary for preservation or transport does not affect classification. It remains a phosphite ester under tariff item 2920.24.00.
Duty Rate — United States → Canada
0%
Import Tips
• Document the MEHQ concentration and its purpose as a stabilizer on customs documents
• Ensure the stabilizer is necessary for preservation and does not alter the product's general use
• Provide SDS for MEHQ if requested by CBSA