Fast Yellow Base GD
Fast Yellow Base GD is a chemically defined aromatic monoamine used as a coupling component for brilliant yellow azo dyes with superior fastness properties. It qualifies for HTS 2921.49.32.00 as a fast color base under Chapter 29 provisions for amine-function compounds. Primarily applied in reactive dyeing of cellulosic fibers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when imported as disazo or polyazo pigment base
Pigment-grade azo compounds are classified in heading 3204, separate from amine intermediates.
If containing heterocyclic ring structures dominating classification
Heterocyclic compounds with amine substituents fall under heading 2933 per Chapter 29 notes.
If finishing agents contain this as minor component
Textile finishing preparations incorporating color bases classify under Chapter 38.
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Import Tips & Compliance
• Provide evidence of diazotization capability to Customs for proper fast color base verification
• Ensure temperature-controlled shipping to prevent degradation of the amine functionality
Related Products under HTS 2921.49.32.00
Fast Red Base B
Fast Red Base B is an aromatic monoamine derivative used as a diazo component in the production of azo dyes with excellent color fastness. It falls under HTS 2921.49.32.00 as a fast color base, being a chemically defined amine-function compound specifically designed for dye coupling processes. This product enables vibrant, stable red shades in textile and leather dyeing applications.
Fast Blue Base BB
Fast Blue Base BB serves as a diazotizable aromatic amine for creating fast blue azo dyes used in cotton and wool printing. Classified under HTS 2921.49.32.00 as it meets the criteria for fast color bases per Chapter 29 notes. Its structure ensures high resistance to light and washing in finished dye applications.
Fast Scarlet Base R
Fast Scarlet Base R, an aromatic amine derivative, functions as a diazo component for scarlet azo dyes exhibiting excellent fastness to light and chlorine. HTS 2921.49.32.00 classification applies as it is a separate chemically defined amine-function compound per Chapter 29 note (a). Essential for high-performance textile coloration.
Fast Black Base N
Fast Black Base N is a specialized aromatic monoamine serving as the diazo component for deep black azo dyes with superior wash fastness. It is classified under HTS 2921.49.32.00 as a fast color base, being a pure amine-function compound excluded from Chapter 32 dye headings. Used extensively in denim and leather dyeing.
Fast Orange Base 2G
Fast Orange Base 2G, a diazotizable aromatic amine, produces brilliant orange shades with exceptional fastness in direct and reactive dyeing systems. Falls under HTS 2921.49.32.00 per Chapter 29 as a chemically defined fast color base for azo dye synthesis. Critical intermediate for apparel and home textile coloration.
Fast Green Base BN
Fast Green Base BN is an aromatic monoamine derivative used to manufacture green azo dyes with high fastness to perspiration and light. Classified as HTS 2921.49.32.00 fast color base as it constitutes a separate chemically defined compound per Chapter notes. Applied in printing pastes for synthetic fibers.