2,5-Dihydroxybenzenesulfonic acid potassium salt
This is a specific sulfonated derivative of dihydroxybenzene (resorcinol) in the form of its potassium salt, explicitly listed under HTS 2908.99.0300. It features only sulfo groups attached to the phenolic structure, qualifying it for this chapter's heading for halogenated, sulfonated, nitrated or nitrosated derivatives of phenols. Used primarily as an intermediate in dye synthesis and chemical manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If further processed into synthetic organic dyes or coloring matter
Once converted to finished synthetic dyes, it falls under Chapter 32 per chapter exclusion (g), not remaining as a chemical intermediate.
If imported as a formulated mixture for retail or specific industrial application
Mixtures exceeding simple solutions or stabilized forms may classify as chemical preparations in Chapter 38 rather than pure compounds.
If classified primarily by its ketone-derived structure rather than sulfonated phenol
Alternative oxygen-function classification possible if structural features dominate over sulfonation, per chapter note on oxygen functions.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates confirming identity and purity as per chapter note (a) for separate chemically defined compounds
• Verify the product contains only sulfo groups without halogenation to avoid reclassification under other 2908 subheadings
• Include safety data sheets (SDS) documenting stabilizer use if present, per chapter note (f), to prevent customs delays
Related Products under HTS 2908.99.03.00
3,6-Dihydroxy-2,7-naphthalenedisulfonic acid
A naphthalene-based compound with two hydroxy groups and two sulfo groups, explicitly named in HTS 2908.99.0300 as a sulfonated derivative of phenols or phenol-alcohols containing only sulfo groups. This chemically defined organic compound serves as a key intermediate for azo dye production. Its classification follows chapter note prioritizing last numerical heading for multi-function compounds.
3,6-Dihydroxy-2,7-naphthalenedisulfonic acid sodium salt
The sodium salt form of this specific naphthalenedisulfonic acid, directly listed under HTS 2908.99.0300 for sulfonated phenol derivatives containing only sulfo groups. As a salt of an organic sulfo acid, it classifies with the parent acid per chapter note 3(C)(1). Commonly used in textile dye manufacturing.
4-Hydroxy-1-naphthalenesulfonic acid sodium salt
Sodium salt of 4-hydroxy-1-naphthalenesulfonic acid (also known as Laurent's acid salt), explicitly provided for in HTS 2908.99.0300. This sulfonated naphthol derivative contains only sulfo groups and qualifies as a chemically defined compound of chapter note (a). Essential intermediate for direct and reactive dyes.
1-Naphthol-3,6-disulfonic acid
Also known as 1,4-dihydroxy-2,7-naphthalenedisulfonic acid or H-acid in dye chemistry, this compound is explicitly listed under HTS 2908.99.0300. It features a naphthol structure with two sulfo groups, classifying as a sulfonated phenol derivative containing only sulfo groups. Critical intermediate for reactive dyes used in textiles.
2-Naphthol-3,6-disulfonic acid disodium salt
The disodium salt of 2-naphthol-3,6-disulfonic acid (R-acid salt), specifically provided for in HTS 2908.99.0300. This sulfonated naphthol derivative contains only sulfo groups and their salts, qualifying under the chapter's provisions for chemically defined organic compounds. Used in manufacturing acid dyes.