Diphenylthiourea
Diphenylthiourea is an aromatic thiourea derivative (C6H5-NH-CS-NH-C6H5) used as a vulcanization accelerator in rubber production and reagent in organic synthesis. It qualifies under HTS 2930.90.26.00 as a named organo-sulfur compound with thiocarbonyl group directly linked to carbon in aromatic structure. Meets chapter 29 criteria for chemically defined organic compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not explicitly named but still aromatic organo-sulfur
Other aromatic organo-sulfur compounds fall in basket 2930.90.9050
If when imported as rubber accelerator mixture with stabilizers
Prepared rubber accelerators exceeding chapter 29 purity notes classify as chemical preparations
If classified by imine/thiourea function over sulfur
Certain thioureas may fall under 2925 if nitrogen function predominates
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Import Tips & Compliance
• Provide REACH/TSCA dossiers confirming <0.1% impurities; declare CAS 102-08-9 accurately
• Segregate from strong oxidizers in shipping to prevent thiourea decomposition
• Obtain EPA approvals if used in pesticide manufacturing
Related Products under HTS 2930.90.26.00
3-(4'-Aminobenzamido)phenyl-β-hydroxy-ethylsulfone
This is a specific aromatic organo-sulfur compound used primarily as an intermediate in the production of reactive dyes for textiles. It features a sulfone group directly linked to carbon in an aromatic structure, qualifying it under HTS 2930.90.26.00 as one of the named substances in the tariff description. The compound's chemical purity must meet chapter 29 requirements for separate chemically defined organic compounds.
2-[(4-Aminophenyl)sulfonyl]ethanol, hydrogen sulfate ester
A chemically defined aromatic organo-sulfur compound serving as a dye intermediate, featuring a sulfonyl group linked to both phenyl and ethanol moieties. Classified under HTS 2930.90.26.00 as explicitly named, fitting chapter 29 for separate organic compounds with sulfur directly bound to carbon. Used in textile dyeing processes requiring high purity.
N,N'-(Dithiodi-2,1-phenylene)bisbenzamide
This disulfide-linked bisbenzamide compound features two aromatic rings connected via S-S bond with amide functionalities, used in pharmaceutical intermediates and polymer chemistry. Explicitly named in HTS 2930.90.26.00 as aromatic organo-sulfur compound per chapter 29 definitions. The dithio structure provides characteristic sulfur-carbon linkages.
Pentachlorothiophenol
Pentachlorothiophenol (C6Cl5-SH) is a highly chlorinated aromatic thiol used as a synthetic intermediate for fungicides, lubricants, and rubber chemicals. Classified under HTS 2930.90.26.00 as named organo-sulfur compound with thiol group directly bound to aromatic carbon. Exclusively fits chapter 29 for pure chemical compounds.
4,4'-Thiodiphenol cyanate
Also known as 4,4'-thiodiphenol cyanate, this compound features a thioether linkage between two phenolic rings with cyanate groups, used in polymer synthesis and flame retardants. Named specifically in HTS 2930.90.26.00 as aromatic organo-sulfur compound per chapter 29 organo-sulfur definitions. The S-C aromatic bonds define its classification.
Diphenylthiourea Technical Grade
Technical grade diphenylthiourea with stabilizer for rubber accelerator applications, maintained as chemically defined compound under chapter 29 note (f). Explicitly named in HTS 2930.90.26.00, distinguishing from mixtures. Purity typically 95-98% for industrial use.