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N,N-dicyclohexyl-2-benzothiazolesulfenamide

CAS Number
4979-32-2
EC Number
225-625-8
Chemical Formula
C19H26N2S2
Molecular Weight
346.6 g/mol

Description

N,N-Dicyclohexyl-2-benzothiazolesulfenamide (CAS 4979-32-2 ), commonly known as DCBS, is a delayed-action sulfenamide accelerator used in rubber vulcanization. It controls the onset and rate of cure, giving processors a longer scorch safety window before crosslinking begins. DCBS is the preferred accelerator in tire manufacturing, where it enables safe processing of thick-section components such as sidewalls, treads, and bead fillers without premature cure. In industrial rubber goods, such as conveyor belts, hoses, and seals, it supports consistent crosslink density across heavy-gauge profiles. Formulators combine it with secondary accelerators to fine-tune cure speed. Commonly paired with DPG or TBBS, it helps achieve specific modulus development in demanding compound specifications. Its delayed onset also makes it suitable for injection-molded and transfer-molded rubber parts. This is particularly critical where extended flow time is required before cure initiates. DCBS is supplied as an off-white to pale yellow powder or granules, with granular form preferred for dust-controlled handling. The material is available in technical rubber grade, the standard specification for this accelerator class. Packaging typically ranges from 25 kg bags to bulk quantities for industrial use. Active content specifications are confirmed by melting point and assay testing per supplier certificates of analysis. This ensures consistent performance across various manufacturing batches and applications. Contact us for supply of N,N-dicyclohexyl-2-benzothiazolesulfenamide Request Quote

Other Names (Synonyms)

Benzothiazyl-2-dicyclohexyl sulfenamide (dcbs) | n-(1,3-benzothiazol-2-ylsulfanyl)-n-cyclohexylcyclohexanamine | DCBS

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point99 °C
Boiling Point230°C (rough estimate)
Density1.20
ColorPale Yellow to Light Yellow
FormSolid
Water Solubility1.9μg/L at 25℃
Vapor Pressure0Pa at 25℃
Refractive Index1.5800 (estimate)
Log P5.95

Safety & Handling

Warning
GHS07· IrritantGHS09· EnvironmentGHS08· Health Hazard

Hazard Statements

H317May cause an allergic skin reaction
H371May cause damage to organs
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H413May cause long lasting harmful effects to aquatic life

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P352IF ON SKIN: Wash with plenty of water.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.