Fast Blue Base RS from Japan
Fast Blue Base RS is a synthetic aromatic amide serving as a color base for producing fast blue azo dyes on cotton and wool fabrics. Classified under HTS 2924.29.52.00 due to its cyclic amide structure and role in dye synthesis as per chapter notes on carboxyamide compounds. It provides superior wash and light fastness in industrial dyeing processes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include technical data sheets proving diazotization capability to avoid Chapter 32 misclassification
• Watch for anti-dusting agents; excess may violate chapter note (g) for general use