N-Cyclohexyl-2-benzothiazole sulfenamide (CBS)
CBS is an organo-sulfur compound used as a delayed-action accelerator in rubber vulcanization, providing optimal processing safety and fast curing properties. It falls under HTS 2930.90.92.31 because it is a benzothiazole sulfenamide specifically designed for rubber processing, matching the chapter's classification for organo-sulfur compounds used principally in this application.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as compounded rubber accelerator mixture with fillers
Blends with inert materials or other additives exceeding simple formulations are classified as compound rubber accelerators in Chapter 38.
If lacking direct sulfur-carbon bond characteristic of organo-sulfur compounds
Nucleic acids and derivatives without organo-sulfur structure fall under heterocyclic compounds heading.
If for technical grade with significant impurities or stabilizers
Preparations not meeting 'separate chemically defined compound' criteria per Chapter 29 note (a) shift to chemical preparations.
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Import Tips & Compliance
• Provide Safety Data Sheets (SDS) and confirm 99%+ purity to avoid reclassification as mixtures under Chapter 38
• Include end-use statements verifying rubber processing application to qualify for this specific subheading
• Check REACH compliance documentation if sourced from EU, as it affects import labeling requirements
Related Products under HTS 2930.90.92.31
Zinc Dibenzyl Dithiocarbamate (ZBEC)
ZBEC serves as a super-accelerator for low-sulfur vulcanization systems in rubber compounds, offering rapid curing at low temperatures. Classified under HTS 2930.90.92.31 as an organo-sulfur dithiocarbamate derivative principally used in rubber processing per Chapter 29 organo-sulfur provisions.
Tetramethylthiuram Disulfide (TMTD)
TMTD functions as both an accelerator and sulfur donor in rubber vulcanization, particularly effective in EPDM and low-sulfur compounds. It qualifies for HTS 2930.90.92.31 as a thiuram disulfide organo-sulfur compound whose principal use is rubber processing, consistent with chapter notes.
2-Mercaptobenzothiazole (MBT)
MBT is a primary rubber accelerator used in acidic and neutral compounding systems, providing good aging properties. As a benzothiazolethiol organo-sulfur compound principally for rubber processing, it falls under HTS 2930.90.92.31 per Chapter 29 definitions.
Zinc 2-Mercaptobenzothiazole (ZMBT)
ZMBT acts as a medium-speed rubber accelerator with excellent dispersion properties, used in tire and mechanical goods production. Classified in HTS 2930.90.92.31 as its organo-sulfur metal coordination compound principal use is rubber vulcanization per chapter coordination compound rules.
N-Oxydiethylenebenzothiazole-2-Sulfenamide (NOBS/MBS)
NOBS provides delayed vulcanization with rapid curing rates, ideal for thick rubber articles like tires. This sulfenamide's principal rubber processing function places it under HTS 2930.90.92.31 as a chemically defined organo-sulfur compound.
Dipentamethylenethiuram Tetrasulfide (DPTT)
DPTT functions as both sulfur donor and accelerator in low-sulfur rubber systems, particularly for heat-resistant compounds. As a thiuram polysulfide organo-sulfur compound for rubber processing, it classifies under HTS 2930.90.92.31.