TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC)

Tellurium Diethyldithiocarbamate (TDEC) is generally used in combination with sulfur and other accelerators to optimize cure characteristics and final product performance.
Tellurium Diethyldithiocarbamate (TDEC) offers very fast vulcanization.
Tellurium Diethyldithiocarbamate (TDEC) is used as a secondary ultra-accelerator for thiazole and sulfenamide cure systems for general-purpose polymers (NR, NBR, SBR and EPDM).
In IIR, Tellurium Diethyldithiocarbamate (TDEC) results in extremely fast curing.

CAS Number: 20941-65-5
EC Number: 244-121-9
Molecular Formula: C₂₀H₄₀N₄S₈Te
Molecular Weight: 720.68–720.70 g/mol

SYNONYMS:
Tellurium Diethyldithiocarbamate, Tellurium (IV) Diethyldithiocarbamate, Ethyl Tellurac, Tellurac, Akrochem TDEC, Perkacit TDEC, Nocceler TTTE, Ditiocarb Tellurium, Diethyldithiocarbamic Acid Tellurium Salt, Tellurium Tetrakis(diethyldithiocarbamate), Tetrakis(diethyldithiocarbamato)tellurium, Tetrakis(diethylcarbamodithioato-S,S')tellurium, Carbamodithioic Acid, Diethyl-, Tetrakis(Anhydrosulfide) with Thiotelluric Acid, TDEC, ETHYL TELLURAC, TeEDC, Tellurac, TDEC(TEL), nci-c02857, Te(DEDTC)4, noccelerttte, (h4tes4)[qr], tellurac[qr], Diethyldithiocarbamic acid tellurium salt, tellurium diethyldithiocarbamate, Tetrakis(diethyldithiocarbamato-S, S')tellurium, Tetrakis(diethyldithiocarbamato)-teIlurium(IV), Tellurium IV diethyldithiocarbamate, Akrochem TDEC, Tellurium, tetrakis(diethylcarbamodithioato-S,S')-, Diethyldithiocarbamic acid tellurium salt, Ethyl tellurac Rodform, Perkacit TDEC, Tellurac, Tellurium (IV) diethyldithiocarbamate, Tellurium diethyldithiocarbamate, Tellurium, tetrakis(diethylcarbamodithioato-S,S')-, (DD-8-1,1,1'',1'',1',1',1''',1''')-, Tellurium, tetrakis(diethyldithiocarbamate)-, Tetrakis(diethylcarbamodithioato-S,S')tellurium, Carbamodithioic acid, diethyl-, tetrakis(anhydrosulfide) with thiotelluric acid (H4TeS4), Nocceler TTTE, Tellurium, tetrakis(diethyldithiocarbamato)-, Tellurium, tetrakis(N,N-diethylcarbamodithioato-κS,κS')-, (DD-8-111''1''1'1'1'''1''')-, Tetrakis(diethyldithiocarbamato)tellurium, tetrakis(diethyldithiocarbamato-S,S')tellurium

Tellurium Diethyldithiocarbamate (TDEC) is an accelerator for natural- and styrene-butadiene rubber.
The properties like fast velocity at vulcanizing temperature can be achieved and intension Tellurium Diethyldithiocarbamate (TDEC)can be increased when used with accelerators such as benzothiazole and sulfanamide.
Tellurium Diethyldithiocarbamate (TDEC) is suitable for making inner tube of tires, soft tube and isolating layer of wire and cables.

Tellurium Diethyldithiocarbamate (TDEC) is available in powder and oiled powdered form.
Recommended addition dosage of oiled powdered form of Tellurium Diethyldithiocarbamate (TDEC) is 0.1-2.0%.
Tellurium Diethyldithiocarbamate (TDEC) has a shelf life of 1 year.

Tellurium Diethyldithiocarbamate (TDEC) is crucial for durable rubber goods.
Tellurium Diethyldithiocarbamate (TDEC) is an organometallic compound used in the synthesis of fusiform-shaped Te-Au hybrids for efficient electrocatalytic oxidation of isopropanol.
Tellurium Diethyldithiocarbamate (TDEC) is an orange-yellow to bright yellow fluffy powder.

Tellurium Diethyldithiocarbamate (TDEC) is insoluble in water.
Tellurium Diethyldithiocarbamate (TDEC) is sensitive to prolonged exposure to light.
The global Tellurium Diethyldithiocarbamate (TDEC) market was valued at US$ 130 million in 2025 and is anticipated to reach US$ 185 million by 2032, at a CAGR of 5.2% from 2026 to 2032.
Tellurium Diethyldithiocarbamate (TDEC) is a vulcanization accelerator with the formula C20H40N4S8Te.

Tellurium Diethyldithiocarbamate (TDEC), an important rubber accelerator, finds extensive application in the rubber industry.
With the continuous expansion of the global rubber products market, the demand for Tellurium Diethyldithiocarbamate (TDEC) is steadily growing.
In the future, as rubber industry technology advances and market demand continues to rise, Tellurium Diethyldithiocarbamate (TDEC) is poised to exhibit greater potential in broader application domains, imparting superior performance and characteristics to rubber products.

USES and APPLICATIONS of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
Tellurium Diethyldithiocarbamate (TDEC) is a tellurium-containing dithiocarbamate compound primarily used as an ultra-fast vulcanization accelerator in the rubber industry.
Tellurium Diethyldithiocarbamate (TDEC) is especially effective in EPDM rubber sponge, natural rubber (NR), styrene-butadiene rubber (SBR), nitrile rubber (NBR), and other sulfur-curable elastomers where rapid curing, high crosslink density, and improved mechanical performance are required.

Tellurium Diethyldithiocarbamate (TDEC) belongs to the family of organotellurium accelerators and is valued for its ability to significantly shorten vulcanization time while producing excellent physical properties in finished rubber products.
Tellurium Diethyldithiocarbamate (TDEC) is generally used in combination with sulfur and other accelerators to optimize cure characteristics and final product performance.
Versatile Application: Tellurium Diethyldithiocarbamate (TDEC) is highly effective for NR and synthetic rubbers like EPDM and IIR, making it a versatile accelerator for various rubber formulations.

Natural Rubber (NR) Applications: Leverage Tellurium Diethyldithiocarbamate (TDEC) as a super accelerator for natural rubber to achieve rapid vulcanization and enhanced physical properties, essential for quality rubber goods.
Synthetic Rubber (EPDM, IIR): Improve EPDM and IIR vulcanization speed and quality by using Tellurium Diethyldithiocarbamate (TDEC) in conjunction with thiazole, thiuram, and dithiocarbamate accelerators.

Automotive Components: Tellurium Diethyldithiocarbamate (TDEC) is instrumental in manufacturing high-performance automotive parts requiring superior strength and durability.
Industrial Rubber Products: From hoses to belts, Tellurium Diethyldithiocarbamate (TDEC) contributes to the production of robust industrial rubber products.
Tellurium Diethyldithiocarbamate (TDEC) offers very fast vulcanization.

Tellurium Diethyldithiocarbamate (TDEC) is used as a secondary ultra-accelerator for thiazole and sulfenamide cure systems for general-purpose polymers (NR, NBR, SBR and EPDM).
In IIR, Tellurium Diethyldithiocarbamate (TDEC) results in extremely fast curing.
Tellurium Diethyldithiocarbamate (TDEC) is non-staining and non-discoloring.

Tellurium Diethyldithiocarbamate (TDEC) can be used as a primary accelerator in some continuous cure applications.
Tellurium Diethyldithiocarbamate (TDEC) is an organometallic compound used in the synthesis of fusiform-shaped Te-Au hybrids for efficient electrocatalytic oxidation of isopropanol.
Using Tellurium Diethyldithiocarbamate (TDEC) in sulfur vulcanization results in increased tensile strength and modulus.

It should be noted that in the application of Tellurium Diethyldithiocarbamate (TDEC) can be formed by the reaction of diethylamine, a decomposition product, with nitrosating agents (nitrogen oxides).
Tellurium Diethyldithiocarbamate (TDEC) is used as a super accelerator for natural rubber and styrene-butadiene rubber, and is suitable for the manufacture of tire inner tubes, hoses, wire and cable insulation layers, etc.

Tellurium Diethyldithiocarbamate (TDEC) is used as a super fast hydrophobic accelerator for natural rubber and synthetic rubber, generally combined with thiazole and sulfonamide accelerators, mainly used in the manufacture of inner tubes, cable insulation layers, hoses, etc.
Tellurium Diethyldithiocarbamate (TDEC) is a very fast primary or secondary (ultra) accelerator for natural and synthetic rubbers.

By enhancing rubber vulcanization speed and performance, Tellurium Diethyldithiocarbamate (TDEC) contributes to the improvement of rubber product quality and durability.
Tellurium Diethyldithiocarbamate (TDEC) has specific uses in rubber products encompassing automotive tires, industrial rubber goods, and medical supplies.
Tellurium Diethyldithiocarbamate (TDEC) is widely used in the manufacturer of extruded EPDM rubber sponge for Automobile doors where partial rapid curing is desired before blowing of rubber.

Tellurium Diethyldithiocarbamate (TDEC) is widely employed as a specialty vulcanization accelerator in sulfur-cured rubber systems where extremely rapid curing is required.
Tellurium Diethyldithiocarbamate (TDEC)'s primary industrial application is in the production of extruded EPDM sponge rubber used for automotive door seals, weatherstrips, window channels, and other sealing profiles.
In these applications, Tellurium Diethyldithiocarbamate (TDEC) enables partial curing before the foaming stage, allowing the sponge structure to develop uniformly while maintaining dimensional accuracy.

Tellurium Diethyldithiocarbamate (TDEC) is also utilized in the manufacture of natural rubber, styrene-butadiene rubber, nitrile rubber, and other elastomeric materials requiring high cure rates and excellent physical performance.
Tellurium Diethyldithiocarbamate (TDEC) can be incorporated into industrial rubber goods, molded mechanical components, vibration-damping products, rubber gaskets, hoses, seals, and technical rubber articles.

Because of its rapid curing characteristics, Tellurium Diethyldithiocarbamate (TDEC) is often selected for high-productivity manufacturing processes where shorter press times improve production efficiency and reduce energy consumption.
Tellurium Diethyldithiocarbamate (TDEC) is commonly used together with sulfur and complementary accelerators to optimize cure profile, crosslink structure, and overall product quality.

BENEFITS of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
Tellurium Diethyldithiocarbamate (TDEC) offers numerous advantages in rubber processing and vulcanization technology.
Tellurium Diethyldithiocarbamate (TDEC) provides exceptionally fast cure rates, allowing manufacturers to reduce production time and improve manufacturing efficiency.

Tellurium Diethyldithiocarbamate (TDEC) enhances crosslink density, leading to improved tensile strength, elasticity, abrasion resistance, resilience, and compression set properties.
Tellurium Diethyldithiocarbamate (TDEC)'s effectiveness at relatively low dosage levels helps minimize formulation costs while delivering consistent vulcanization performance.

In EPDM sponge production, Tellurium Diethyldithiocarbamate (TDEC) contributes to improved cellular structure, dimensional stability, and surface quality.
Tellurium Diethyldithiocarbamate (TDEC) also promotes uniform curing throughout thick rubber sections and supports stable processing under properly controlled manufacturing conditions.
When used appropriately within balanced accelerator systems, Tellurium Diethyldithiocarbamate (TDEC) can improve productivity without significantly compromising the physical properties of the finished rubber product.

CHARACTERISTICS of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
Tellurium Diethyldithiocarbamate (TDEC) is recognized as one of the fastest sulfur vulcanization accelerators available for specialty rubber formulations.
Tellurium Diethyldithiocarbamate (TDEC) promotes rapid crosslink formation at relatively low temperatures and significantly reduces curing time.
Because of Tellurium Diethyldithiocarbamate (TDEC)'s exceptional activity, only small quantities are normally required to achieve efficient vulcanization.

Tellurium Diethyldithiocarbamate (TDEC) provides excellent processing efficiency by shortening production cycles while maintaining uniform curing throughout the rubber article.
Tellurium Diethyldithiocarbamate (TDEC) is particularly effective in EPDM sponge rubber, where partial rapid curing before expansion is essential for obtaining fine cellular structure and dimensional stability.
Tellurium Diethyldithiocarbamate (TDEC) also contributes to improved compression set, resilience, elasticity, and mechanical strength of vulcanized rubber compounds.
Due to its strong accelerating effect, Tellurium Diethyldithiocarbamate (TDEC) is frequently used together with primary and secondary accelerators to balance scorch safety and cure speed.

KEY ADVANTAGES of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
Accelerated Curing Times
Tellurium Diethyldithiocarbamate (TDEC) significantly reduces total curing time when used with other accelerators, boosting manufacturing efficiency.
Tellurium Diethyldithiocarbamate (TDEC)'s precise dosage, typically 0.1 - 2 phr, is key to leveraging its benefits for faster output.

Enhanced Product Durability
Vulcanizates produced with Tellurium Diethyldithiocarbamate (TDEC) exhibit superior tensile strength and good aging resistance, ensuring your rubber products last longer and perform better.

Formulation Flexibility
Ideal for soft compounds with high oil content, Tellurium Diethyldithiocarbamate (TDEC) helps maintain curing rates where higher oil dosages might otherwise reduce performance.
This makes Tellurium Diethyldithiocarbamate (TDEC) a valuable rubber chemical for diverse applications.

PHYSICAL and CHEMICAL PROPERTIES of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
Molecular formula: C₂₀H₄₀N₄S₈Te
Molecular weight: 720.68–720.70 g/mol
Appearance: Orange to yellow powder
Physical state: Solid
Odor: Slight characteristic sulfur-like odor
Melting point: Approximately 112–122°C
Density: Data not consistently reported in public literature
Solubility in water: Practically insoluble
Solubility in organic solvents: Soluble in chloroform, toluene and several aromatic organic solvents
Stability: Stable under recommended storage conditions

Moisture sensitivity: Low under normal storage conditions
Thermal stability: Stable at ambient temperatures but decomposes at elevated temperatures
Decomposition products: Sulfur oxides (SOx), nitrogen oxides (NOx), tellurium oxides, carbon oxides
Color: Yellow to orange
Exact mass: 722.0081 Da
Topological polar surface area (TPSA): 145 Ų
Hydrogen bond acceptors: 8
Hydrogen bond donors: 0
Rotatable bonds: 8
Heavy atom count: 33
Formal charge: Neutral (0)

Chemical class: Organotellurium dithiocarbamate
Cure behavior: Ultra-fast sulfur vulcanization accelerator
Compatibility: Compatible with sulfur curing systems and secondary accelerators
Crosslinking efficiency: Produces high sulfur crosslink density
Blooming tendency: Low at recommended dosage; excessive loading may lead to blooming
Storage stability: Typically up to 24 months when stored in tightly closed original containers in a cool, dry environment
Chemical Name: Tellurium Diethyldithiocarbamate
Common Abbreviation: TDEC
CAS Number: 20941-65-5
EC Number: 244-121-9

Molecular Formula: C₂₀H₄₀N₄S₈Te
Molecular Weight: 720.68–720.70 g/mol
CBNumber: CB4117054
Molecular Formula: C20H40N4S8Te
Molecular Weight: 720.68
MDL Number: MFCD01310450
MOL File: 20941-65-5.mol
Melting point: 108-118°C
Density: 1.44
vapor pressure: 0Pa at 20℃

form: solid
Specific Gravity: 1.55
Water Solubility: <0.01 g/100 mL at 23 ºC
Hydrolytic Sensitivity: 4: no reaction with water under neutral conditions
LogP: 4.39 at 25℃
Toxicology and Carcinogenesis: Bioassay of Ethyl Tellurac for Possible Carcinogenicity (CASRN 20941-65-5)
FDA UNII: 0653A77079
NIST Chemistry Reference: Ethyl tellurac(20941-65-5)
IARC: 3 (Vol. 12, Sup 7) 1987
EPA Substance Registry System: Ethyl tellurac (20941-65-5)

FIRST AID MEASURES of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of TELLURIUM DIETHYLDITHIOCARBAMATE (TDEC):
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available