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Tetramethylthiuram monosulfide

CAS Number
97-74-5
EC Number
202-605-7
Chemical Formula
C6H12N2S3
Molecular Weight
208.4 g/mol

Description

Tetramethylthiuram monosulfide ( CAS 97-74-5 ), commercially known as TMTM or Unads, is an organosulfur accelerator used primarily in rubber vulcanization and crop protection formulations. Unlike its disulfide counterpart, the monosulfide structure offers a distinct cure profile suited to specific processing requirements. In rubber compounding, it functions as a primary or secondary accelerator. This chemical enables controlled cure rates in natural and synthetic rubber goods including seals, hoses, and molded components. It is also used in agricultural formulations as a fungicide and seed treatment agent. The product targets soil-borne pathogens in cereal and vegetable crops. Polymer stabilization is another application where it acts as an antioxidant additive in plastic compounds for long-term thermal stability. In latex systems, it contributes to prevulcanization control, giving formulators tighter command over gel formation and final product consistency. This ensures high performance in specialized manufacturing environments. The material is supplied as a pale yellow to off-white powder, the standard physical form for rubber and agricultural end uses. Technical grade is the predominant commercial specification for industrial use. Purity is typically confirmed by active content assay to meet industry requirements. Pre-dispersed masterbatch forms are available for rubber processing applications where dust-free handling is a plant requirement. Contact us for supply of Tetramethylthiuram monosulfide Request Quote

Other Names (Synonyms)

BIS(DIMETHYLTHIOCARBAMOYL) SULFIDE | Unads | TMTM | Mono-thiurad | Aceto TMTM | Thiuram MM | TMTMS | Thiodicarbonic diamide ([(H2N)C(S)]2S), N,N,N′,N′-tetramethyl-

Key Technical Features

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

Physical Properties

Melting Point109.5 °C
Boiling Point260.9±23.0 °C(Predicted)
Density1.37 g/cm³ @ Temp: 20 °C
Flash Point156 °C
Appearanceyellow powder
ColorYellow
Odorodorless
FormPowder
Water Solubilityinsoluble
Vapor Pressure0.002Pa at 25℃
Refractive Index1.4825 (estimate)
Log P1.17 at 20℃

Safety & Handling

Warning
GHS07· IrritantGHS09· EnvironmentGHS08· Health Hazard

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H332Harmful if inhaled
H341Suspected of causing genetic defects
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects H302+
H332Harmful if swallowed or if inhaled

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
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.
P271Use only outdoors or in a well-ventilated area.
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.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29303000
UN Number3077
ADR Class9
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)3