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Rubber Accelerator TMTM (TS)

A highly efficient, non-discoloring thiuram monosulfide ultra-accelerator and secondary booster, engineered to provide outstanding scorch safety, excellent vulcanization plateaus, and superior mechanical property enhancements.

In the highly competitive global industrial rubber and tire manufacturing sectors, mastering vulcanization kinetics is essential to avoiding premature compound scorching and minimizing cycle times. Tetramethylthiuram Monosulfide (universally recognized in B2B chemical procurement markets as TMTM or TS) stands as an essential, high-activity thiuram class ultra-accelerator. Chemically registered as CAS No. 97-74-5, TMTM strikes an exceptional balance between fast curing action and broad processing safety. Unlike its disulfide counterpart (TMTD), TMTM does not liberate free sulfur during normal processing temperatures, making it a highly valued primary or secondary accelerator for light-colored, heat-resistant technical rubber goods where non-staining properties are an absolute prerequisite.

Technical Product Specifications

Property / Parameter Standard Specification
Chemical Name Tetramethylthiuram Monosulfide (TMTM / TS)
CAS Number 97-74-5
Molecular Formula C6H12N2S3
Appearance Bright yellow fine powder / oiled powder / dust-free granules
Initial Melting Point (°C) ≥ 104.0 °C
Loss on Drying (%) ≤ 0.30%
Ash Content (%) ≤ 0.30%
Sieve Residue (150 μm / 100 mesh) ≤ 0.10%

Why Choose Our TMTM (TS) Accelerator?

  • ✓ Enhanced Processing Scorch Safety: Compared to other ultra-accelerators like TMTD or dithiocarbamates, TMTM offers superior scorch resistance and wider safety margins during high-shear compounding or milling.
  • ✓ Excellent Color and Aesthetic Stability: Because it is completely non-staining and non-discoloring, TMTM is ideal for bright white, translucent, or vividly colored rubber articles, preventing the yellowing caused by aging.
  • ✓ Powerful Secondary Activation: Functions as a highly effective secondary modifier or booster for thiazoles (MBT, MBTS) and sulfenamides (CBS, NS), sharply cutting down overall vulcanization times while maximizing crosslink efficiency.

Primary Applications

Accelerator TMTM (TS) is widely utilized across Natural Rubber (NR), Isoprene Rubber (IR), Styrene-Butadiene Rubber (SBR), Nitrile Rubber (NBR), Chloroprene Rubber (CR), and diverse latex formulations:

Technical Molded Rubber Goods

Extensively selected for intricate mechanical gaskets, dynamic industrial seals, engine mounts, and complex automotive rubber parts demanding uniform vulcanization.

Bright Footwear & Consumer Items

The premier selection for colored shoe outsoles, vibrant sports equipment, athletic grips, and non-staining household consumer rubber applications.

Wires, Cables & Extruded Hoses

Formulated inside protective electrical wire insulation coverings, high-pressure industrial fluid lines, and premium flexible hoses to prevent early scorching.

⚠ Storage & Handling Guidelines

Maintaining correct warehouse climate parameters is vital to maintain the active purity and performance parameters of Accelerator TMTM (TS). Because thiuram monosulfide blocks are sensitive to continuous elevated heat, moisture, and strong alkaline atmospheres, following specialized store patterns helps protect your compounding stocks.

  • • Warehouse Climate Control: Keep the chemical stock packages allocated inside cool, thoroughly ventilated, and completely dry warehouse environments. Ensure storage points stay isolated from direct solar exposure, dynamic steam ducts, or high-temperature heat vents.
  • • Sealing & Hardening Preventions: Keep all paper bags tightly sealed until active dry weighing takes place. Refrain from configuring heavy multiple pallet layers to avoid mass lump-caking hazards over high summer thermal periods due to TMTM’s relatively low melting point array.
  • • Shelf Life Strategy: Under clean, temperature-controlled sealed environments, our industrial TMTM products possess a certified shelf life of 24 months from the manufacturing date. Emphasizing a continuous First-In, First-Out (FIFO) pipeline is highly recommended.

Frequently Asked Questions

What is the functional difference between Accelerator TMTM (TS) and TMTD (TT)? +
TMTD is a thiuram disulfide that liberates free elemental sulfur at vulcanization temperatures, making it capable of acting as a sulfurless curing donor. TMTM is a thiuram monosulfide containing only one sulfur atom in its central bridge; it does not donate free sulfur during processing and must be formulated alongside elemental sulfur, providing significantly better scorch safety over TMTD.
Is TMTM considered an eco-friendly or regulatory-safe accelerator? +
Like most traditional alkyl thiurams, TMTM can generate secondary dimethylamines that may form regulated N-nitrosamines under specific atmospheric conditions. For specialized industries with strict non-nitrosamine targets (like baby products or medical items), secondary options like ZBEC are preferred. However, TMTM remains completely compliant for industrial mechanical goods, wires, and automotive seals under standard EU REACH and US TSCA parameters.
What is the typical addition level of TMTM when used as a secondary booster? +
When acting strictly as a secondary chemical booster or curing activator alongside primary thiazoles (such as MBTS) or sulfenamides (such as CBS), TMTM is typically limited to a tight range of 0.1 to 0.5 phr (parts per hundred rubber). In low-sulfur or specialized curing cycles requiring rapid peak speeds, it can be adjusted slightly higher up to 1.0 phr.

Partner with a Reliable Chemical Supplier

We provide premium-grade Rubber Accelerator TMTM (TS) carefully processed to meet international technical benchmarks. Available in high-purity uniform powders and custom dust-free granule configurations to ensure absolute batch precision inside your industrial mixing environment.

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