2,4-Diamino-6-pyrazolone from Canada
Diaminopyrazolone derivative used as stabilizer in color photographic emulsions. Its unfused pyrazole ring with amino substitutions fits HTS 2933.19.30 photographic chemicals. Prevents dye fading in processed color films.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Stability test data showing anti-fade performance essential for classification justification
• Avoid generic 'amine' labeling; specify heterocyclic pyrazolone structure prominently
• REACH compliance docs helpful even for US imports to demonstrate quality control