2,4-Dinitrotoluene-5-sulfonic acid
This dinitro derivative features nitro groups at positions 2 and 4, with sulfonic acid at 5 on toluene, classified under HTS 2904.99.20.00 as nitrotoluenesulfonic acids including compound nitrated derivatives per chapter note. Meets criteria for sulfonated, nitrated hydrocarbons of heading 2904. Used in specialty dye and pharmaceutical synthesis.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nitro group considered 'nitrogen function' over sulfonation
Note clarifies nitro not always nitrogen-function; 2904 takes precedence numerically.
If diluted for azo dye production per note 2(h)
Chapter exclusion (g) and note 2(h) shift diazonium-related dilutions out of Chapter 29.
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Import Tips & Compliance
• Dinitro compounds trigger ATF/Explosives Branch review; provide end-use statement
• Stabilizer additions must qualify under Chapter 29 note (f) or risk reclassification
Related Products under HTS 2904.99.20.00
2-Nitrotoluene-5-sulfonic acid
2-Nitrotoluene-5-sulfonic acid is a sulfonated and nitrated derivative of toluene, featuring a nitro group at the ortho position and a sulfonic acid group at the meta position relative to the methyl group. It falls under HTS 2904.99.20.00 as a chemically defined nitrotoluenesulfonic acid, consistent with Chapter 29 notes for sulfonated, nitrated hydrocarbons. This compound is primarily used as an intermediate in dye synthesis.
4-Nitrotoluene-2-sulfonic acid
4-Nitrotoluene-2-sulfonic acid contains a nitro group para to the methyl and sulfonic acid ortho to methyl on the toluene ring, qualifying as a nitrotoluenesulfonic acid under HTS 2904.99.20.00. This sulfonated, nitrated hydrocarbon derivative aligns with Chapter 29 definitions for separate chemically defined compounds. Commonly serves as precursor in azo dye manufacturing.
6-Nitrotoluene-3-sulfonic acid
6-Nitrotoluene-3-sulfonic acid is the ortho-nitrated, meta-sulfonated toluene isomer, a separate chemically defined compound under HTS 2904.99.20.00. Fits Chapter 29 for nitrotoluenesulfonic acids, excluded from dyes or mixtures. Intermediate for acid dyes and optical brighteners.
Sodium 4-nitrotoluene-2-sulfonate
The sodium salt of 4-nitrotoluene-2-sulfonic acid, classified with the parent acid under HTS 2904.99.20.00 per Chapter 29 note 5(C)(1) for inorganic salts of organic acids. Retains sulfonated/nitrated toluene character without changing heading. Used in water-soluble dye formulations.