Sulfur Black 1 Dye (CI 53185) from Mexico
Sulfur Black 1 is a synthetic organic sulfur dye with Colour Index No. 53185, used primarily for dyeing cellulosic fibers like cotton and viscose. It falls under HTS 3204.19.30.00 as it is specifically listed sulfur black coloring matter. This water-insoluble dye produces deep black shades with good fastness properties on textiles.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify Colour Index number (53185) on supplier documentation and include CI certificate to confirm classification under 3204.19.30.00
• Provide end-use statement showing application in textile dyeing, as sulfur blacks are restricted to specific CI nos. in this subheading
• Test for purity and absence of heavy metals; common pitfall is rejection due to non-compliance with REACH or EPA regulations for dyes