Sodium 4,4'-Dinitrostilbene-2,2'-disulfonate
The sodium salt form of 4,4'-Dinitrostilbene-2,2'-disulfonic acid, where inorganic sodium pairs with the organic sulfonic acid. HTS 2904.99.35.00 applies per chapter note on inorganic salts of organic compounds classifying with the parent acid. Common form for dye intermediate applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nitrogen function predominates
Nitro groups could be interpreted as nitrogen-function compounds under 2929, but 2904 supersedes per numerical order rule.
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Import Tips & Compliance
• Include assay confirming sodium content and equivalence to parent disulfonic acid for proper 2904.99.35.00 classification
• Check for dual salt formation; complex salts follow the organic acid component per chapter notes
• Ensure no added functional groups that would change from sulfonated/nitrated hydrocarbon derivative
Related Products under HTS 2904.99.35.00
4,4'-Dinitrostilbene-2,2'-disulfonic acid
4,4'-Dinitrostilbene-2,2'-disulfonic acid is a sulfonated and nitrated derivative of the hydrocarbon stilbene, featuring two nitro groups and two sulfonic acid groups. It is classified under HTS 2904.99.35.00 as a specific chemically defined organic compound within the category of sulfonated, nitrated, or nitrosated hydrocarbons. This compound serves primarily as an intermediate in dye synthesis.
4,4'-Dinitrostilbene-2,2'-disulfonic acid, 85% purity
Technical grade 4,4'-Dinitrostilbene-2,2'-disulfonic acid at 85% purity with minor impurities, still recognized as the specific compound. Falls under HTS 2904.99.35.00 per chapter note (a) allowing impurities in chemically defined compounds. Used in industrial dye manufacturing processes.
4,4'-Dinitrostilbene-2,2'-disulfonic acid aqueous solution 20%
20% aqueous solution of 4,4'-Dinitrostilbene-2,2'-disulfonic acid prepared for safe transport. Qualifies under HTS 2904.99.35.00 per chapter note (d) for products dissolved in water. Used in liquid form for immediate dye processing.
4,4'-Dinitrostilbene-2,2'-disulfonic acid with stabilizer
Stabilized 4,4'-Dinitrostilbene-2,2'-disulfonic acid containing anticaking agent for preservation during storage and transport. Remains under HTS 2904.99.35.00 per chapter note (f) allowing stabilizers necessary for preservation. Industrial dye production intermediate.