Fast Blue Base R Salt from China
Fast Blue Base R, a diazotizable salt of m-nitro-o-anisidine, falls under HTS 2922.29.06.00 as a fast color base per Chapter 29 note 2(h). Used in cold dyeing processes for stable blue hues in printing inks and textiles.
Duty Rate — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Certify as diazonium salt for azo dyes to align with Chapter note 2(h) standards
• Use UN-approved packaging for unstable diazo salts to meet DOT hazardous material rules
• Document salt formation per note 2(C)(1) to classify with parent amino-compound