We unleash your business potential by maximize the business innovation.
Send EmailTetramethylthiuram Monosulfide, Thiuram Monosulfide, TMTM-80, TMTM80, 97-74-5
TMTM-80 (TETRAMETHYLTHIURAM MONOSULFIDE)
CAS Number: 97-74-5
EC Number (EINECS): 202-605-2
Molecular Formula: C₆H₁₂N₂S₃
Molecular Weight: 208.37 g/mol
Chemical Class: Thiuram accelerator
SECTION 1: PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Parameter | Description |
|---|---|
| Chemical Name (IUPAC) | N,N,N',N'-Tetramethylthioperoxydicarbonic diamide |
| Other Names | TMTM, Tetramethylthiuram Monosulfide, Accelerator TMTM, Thiuram Monosulfide |
| CAS Number | 97-74-5 |
| EC Number (EINECS) | 202-605-2 |
| Molecular Formula | C₆H₁₂N₂S₃ |
| Molecular Weight | 208.37 g/mol |
| Chemical Class | Thiuram accelerator |
| Appearance (Powder Form) | Light yellow to yellow powder |
| Appearance (Granule Form) | Yellow granules |
| Odor | Slight characteristic |
SECTION 2: PHYSICAL AND CHEMICAL PROPERTIES
2.1. Powder Form (Pure TMTM)
| Property | Value / Range |
|---|---|
| Molecular Formula | C₆H₁₂N₂S₃ |
| Molecular Weight | 208.37 g/mol |
| Appearance | Light yellow to yellow powder |
| Melting Point | ~104-107°C |
| Density | ~1.36-1.42 g/cm³ |
| Solubility in Water | Insoluble (~0.3 g/L) |
| Solubility in Organic Solvents | Soluble in acetone, chloroform, benzene; sparingly in alcohol, ether |
| pH (Aqueous) | ~6-7 (neutral) |
| Flash Point | > 150°C |
| Decomposition | > 200°C releases sulfur oxides, nitrogen oxides |
2.2. Granule Form (TMTM-80)
| Property | Value / Range |
|---|---|
| Appearance | Yellow granules |
| Density | ~1.21 g/cm³ |
| Active Content | 80% TMTM |
| Binder Content | 20% Elastomer binder and dispersing agents |
| Form | Pre-dispersed granules |
SECTION 3: CHEMICAL PROPERTIES AND REACTIONS
| Property | Description |
|---|---|
| Chemical Class | Thiuram accelerator |
| Functional Group | Thiuram (-N-C(=S)-S-C(=S)-N-) |
| Sulfur Donor | Monosulfide structure (one sulfur atom between thiuram units) |
| Reactivity | High; reacts with metal oxides and accelerators |
| Thermal Decomposition | > 200°C releases sulfur oxides (SOₓ) and nitrogen oxides (NOₓ) |
| Oxidation | Can be oxidized to corresponding disulfides (TMTD) |
| Hydrolysis | Hydrolyzes in strong acidic/basic conditions |
3.1. Key Reactions
| Reaction Type | Description |
|---|---|
| Sulfur Donor | Provides active sulfur for vulcanization |
| Accelerator Synergy | Works synergistically with thiazole and sulfenamide accelerators |
| Curing Activation | Activates thiazole and sulfenamide accelerators (e.g., CBS) |
| Metal Oxide Reaction | Reacts with zinc oxide to form active complexes |
3.2. Rubber Curing Mechanism
TMTM is an ultra-accelerator for natural and synthetic rubber vulcanization:
-
Ultra-Fast Curing: Provides very fast vulcanization at low temperatures
-
Sulfur Donor: Acts as a sulfur donor for low-sulfur vulcanization systems
-
Activator: When used with delayed-action accelerators (like CBS), acts as an activator
-
Heat Resistance: Provides good heat and aging resistance in rubber products
SECTION 4: FUNCTIONAL PROPERTIES
| Property | Description |
|---|---|
| Accelerator Type | Ultra-accelerator |
| Primary Use | Natural and synthetic rubber vulcanization |
| Function | Accelerator / sulfur donor / activator |
| Curing Speed | Ultra-fast |
| Scorch Safety | Lower than thiazoles; moderate |
| Heat Resistance | Provides good heat and aging resistance |
| Sulfur Donor Capacity | Moderate (monosulfide structure) |
| Synergistic Effect | Works synergistically with CBS and other delayed-action accelerators |
SECTION 5: MAJOR APPLICATIONS AND END-USES
5.1. Rubber Vulcanization (Primary Application)
| Application | Function | Suitability |
|---|---|---|
| Natural Rubber (NR) | Primary accelerator / sulfur donor | High |
| Styrene-Butadiene Rubber (SBR) | Primary accelerator / sulfur donor | High |
| Nitrile Rubber (NBR) | Primary accelerator / sulfur donor | High |
| Butyl Rubber (IIR) | Primary accelerator / sulfur donor | Moderate |
| EPDM Rubber | Primary accelerator / sulfur donor | Moderate |
| Chloroprene Rubber (CR) | Primary accelerator / sulfur donor | Moderate |
5.2. Rubber Products
| Application | Suitability |
|---|---|
| Tires | High |
| Hoses | High |
| Belts (Conveyor, Drive) | High |
| Rubber Footwear | High |
| General Industrial Products | High |
| Technical Rubber Goods | High |
| Low-Sulfur Curing Systems | High |
SECTION 6: INDUSTRY SUITABILITY MATRIX
| Industry | Suitability | Explanation |
|---|---|---|
| Tire Manufacturing | High | Ultra-accelerator for tire compounds |
| Automotive Rubber | High | Hoses, belts, seals, gaskets |
| Industrial Rubber | High | General industrial products |
| Rubber Footwear | High | Rubber soles and components |
| Technical Rubber Goods | High | Various molded and extruded products |
| Latex Products | Limited | Due to regulatory restrictions |
SECTION 7: DOSAGE AND APPLICATION
7.1. Recommended Dosage
| Application | Dosage (phr) |
|---|---|
| As Primary Accelerator | 0.5 - 1.5 phr |
| As Sulfur Donor | 1.0 - 2.0 phr |
| As Activator (with CBS) | 0.1 - 0.5 phr |
| Low-Sulfur Systems | 0.5 - 1.0 phr (with reduced sulfur) |
7.2. Advantages of Pre-Dispersed Form (TMTM-80)
| Advantage | Description |
|---|---|
| Excellent Dispersion | Prevents localized over-cured areas |
| Consistent Performance | Ensures stable vulcanizate properties |
| Reduced Dust | Cleaner handling compared to powder form |
| Easy Weighing | Granules facilitate accurate measurement |
| Shorter Mixing Time | Suitable for compounds requiring short mixing cycles |
| Better Homogeneity | Uniform distribution in rubber matrix |
SECTION 8: OTHER NAMES AND IDENTIFIERS
| Type | Name / Description |
|---|---|
| IUPAC Name | N,N,N',N'-Tetramethylthioperoxydicarbonic diamide |
| Chemical Name | Tetramethylthiuram Monosulfide |
| Commercial Names | Accelerator TMTM, Rhenogran TMTM, Rhenoslab TMTM |
| Common Names | TMTM, Thiuram Monosulfide |
| CAS Number | 97-74-5 |
| EC Number | 202-605-2 |
| RTECS Number | XN4300000 |
| HS Code | 29302000 |
SECTION 9: COMPARISON - TMTM vs TMTD
| Property | TMTM | TMTD |
|---|---|---|
| Full Name | Tetramethylthiuram Monosulfide | Tetramethylthiuram Disulfide |
| Sulfur Content | One sulfur atom between thiuram units | Two sulfur atoms between thiuram units |
| Sulfur Donor Capacity | Moderate | High |
| Curing Speed | Ultra-fast | Ultra-fast |
| Heat Resistance | Good | Good |
| Nitrosamine Risk | Low | Low |
| Color | Light yellow | Yellow-white |
| Melting Point | 104-107°C | 140-146°C |
| Use | Accelerator / sulfur donor / activator | Accelerator / sulfur donor |
SECTION 10: TOXICOLOGY AND HEALTH EFFECTS
| Parameter | Value / Description |
|---|---|
| GHS Classification | Warning |
| Hazard Statements | H315 (Causes skin irritation), H319 (Causes serious eye irritation), H317 (May cause allergic skin reaction) |
| Precautionary Statements | P261 (Avoid breathing dust), P280 (Wear protective gloves/eye protection), P302+P352 (IF ON SKIN: Wash with plenty of water), P305+P351+P338 (IF IN EYES: Rinse cautiously with water) |
| Oral LD50 (Rat) | ~500-1,000 mg/kg |
| Dermal LD50 (Rabbit) | > 2,000 mg/kg |
| Skin Irritation | Irritant; may cause contact dermatitis |
| Eye Irritation | Irritant |
| Skin Sensitization | Positive (allergic contact dermatitis) |
| Mutagenicity | Negative |
| Carcinogenicity | Not classified |
| Reproductive Toxicity | Not classified |
| Target Organs | Skin, eyes, respiratory system |
SECTION 11: SAFETY AND STORAGE
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area |
| Temperature | Room temperature (15-30°C) |
| Container | Tightly closed, original packaging |
| Materials to Avoid | Strong oxidizers, strong acids, strong bases |
| Shelf Life | 24 months (under recommended conditions) |
| Packaging | 25 kg bags, 500 kg big bags |
SECTION 12: TRANSPORT INFORMATION
| Parameter | Information |
|---|---|
| UN Number | Not regulated (not classified as dangerous goods) |
| Hazard Class | Not applicable |
| Packing Group | Not applicable |
| Proper Shipping Name | Tetramethylthiuram Monosulfide |
| ADR/RID | Not regulated |
| IMDG Code | Not regulated |
| IATA (Air) | Not regulated |
| Marine Pollutant | No |
SECTION 13: FIRE-FIGHTING MEASURES
| Parameter | Information |
|---|---|
| Fire Hazard | Combustible dust |
| Extinguishing Media | Water fog, CO₂, dry chemical, foam |
| Special Hazards | When heated, releases sulfur oxides (SOₓ) and nitrogen oxides (NOₓ) |
| Decomposition Products | Sulfur oxides, nitrogen oxides, CO, CO₂ |
| Protective Equipment | Self-contained breathing apparatus (SCBA), full protective clothing |
SECTION 14: ACCIDENTAL RELEASE AND CLEANUP
| Parameter | Information |
|---|---|
| Personal Protection | Gloves, safety goggles, dust mask |
| Ventilation | Increase ventilation |
| Cleanup Methods | Sweep or vacuum while preventing dust formation; collect in sealed containers |
| Environmental Precautions | Prevent entry into drains |
| Waste Disposal | According to local regulations |
SECTION 15: FIRST AID MEASURES
| Exposure Route | Action |
|---|---|
| Inhalation | Move to fresh air. Seek medical attention if symptoms persist. |
| Skin Contact | Remove contaminated clothing. Wash with soap and plenty of water. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. Seek medical attention if irritation persists. |
| Ingestion | Do NOT induce vomiting. Drink plenty of water. Seek medical attention. |
SECTION 16: REGULATORY INFORMATION
| Region / Authority | Status |
|---|---|
| EU REACH | Registered |
| Turkey KKDİK | Registration required |
| USA TSCA | Listed |
| EINECS | 202-605-2 |
| RTECS | XN4300000 |
| WGK (Germany) | 1 (slight hazard to water) |
SECTION 17: SUMMARY AND CRITICAL WARNINGS
Product Summary
| Parameter | Value |
|---|---|
| Product | TMTM-80 (Tetramethylthiuram Monosulfide) |
| CAS | 97-74-5 |
| Appearance | Yellow granules |
| Active Content | 80% TMTM |
| Density | ~1.21 g/cm³ |
| Primary Use | Ultra-accelerator / sulfur donor |
| Key Industries | Tire, automotive rubber, industrial rubber |
CRITICAL WARNINGS
-
Ultra-Accelerator: TMTM is an ultra-accelerator for natural and synthetic rubber vulcanization, providing very fast curing at low temperatures.
-
Sulfur Donor: The monosulfide structure provides moderate sulfur donor capacity for low-sulfur vulcanization systems.
-
Activator Function: When used with delayed-action accelerators (like CBS), TMTM acts as an activator and enhances curing efficiency.
-
Heat Resistance: Provides good heat and aging resistance in rubber products.
-
Synergistic Effect: Works synergistically with thiazole and sulfenamide accelerators.
-
Lower Nitrosamine Risk: Compared to some other thiurams, TMTM has lower nitrosamine formation potential.
-
Skin Sensitization: TMTM may cause allergic skin reactions (H317). Appropriate PPE required during handling.
-
Pre-Dispersed Form Advantage: TMTM-80 form provides excellent dispersion, reduced dust, and easy weighing.
-
Storage: Store in cool, dry, well-ventilated areas. Keep away from strong oxidizers, acids, and bases.
-
Regulatory Status: Registered under REACH. Subject to regulatory restrictions in food contact applications.
IMPORTANT DISCLAIMER: This Technical Data Sheet (TDS) is for informational purposes only and is based on available technical data. The user is solely responsible for determining the product's suitability for their specific application and for complying with all applicable local, national, and international regulations. For complete safety, storage, handling, transportation, disposal, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier. Users are responsible for testing the product in their own processes and applications. All local, national, and international regulations must be followed when working with TMTM-80.
