TERTIARY DODECYL MERCAPTAN (TDM)

Tertiary Dodecyl Mercaptan, commonly abbreviated as TDM, is a branched C12 organosulfur compound belonging to the thiol or mercaptan family.
Tertiary Dodecyl Mercaptan (TDM) is used primarily as a chain transfer agent in free-radical polymerization processes where control of polymer molecular weight is required.
Tertiary Dodecyl Mercaptan (TDM) principal industrial applications are associated with styrene-butadiene polymers, synthetic rubber, ABS resins and other polymer systems produced through radical polymerization.

CAS Number: 25103-58-6
Molecular Formula: C12H26S
Molecular Weight: 202.40 g/mol
EINECS Number: 246-619-1

Synonyms: tert-Dodecanethiol, tert-Dodecyl Mercaptan, Tertiary Dodecyl Mercaptan, tert-Dodecylthiol, T-Dodecyl Mercaptan, T-Dodecanethiol, Tertiary Dodecanethiol, tert-Lauryl Mercaptan, Tertiary Lauryl Mercaptan, TDM, T-DDM, Dodecanethiol Mixed Isomers, tert-Dodecanethiol Mixture of Isomers, Sulfole 120, Sulfol 120, 2,3,3,4,4,5-Hexamethylhexane-2-thiol.

Tertiary Dodecyl Mercaptan (TDM) belongs to the broader chemical family of organic thiols.
Thiols contain a sulfhydryl functional group represented as –SH, which is the sulfur analogue of the hydroxyl group found in alcohols.
The sulfur atom gives mercaptans characteristic radical-transfer chemistry together with their strong and distinctive odor.

The branched hydrocarbon portion of Tertiary Dodecyl Mercaptan (TDM) contributes strong hydrophobic character.
Tertiary Dodecyl Mercaptan (TDM) is consequently essentially insoluble in water but readily compatible with styrene and many common organic media used in polymer manufacturing.
This solubility profile is particularly suitable for emulsion-polymerization processes in which TDM partitions preferentially into monomer droplets and polymer particles rather than remaining in the aqueous phase.

Tertiary Dodecyl Mercaptan (TDM) low water solubility affects the behavior of TDM during emulsion polymerization.
Tertiary Dodecyl Mercaptan (TDM) is concentrated mainly in the hydrophobic regions where growing polymer radicals and monomers are located.
This allows effective molecular-weight control even when the polymerization is carried out in an aqueous emulsion.

Tertiary Dodecyl Mercaptan (TDM) is generally supplied as a mixture of branched C12 mercaptan isomers centered on tertiary dodecyl structures.
Tertiary Dodecyl Mercaptan (TDM) contains a reactive sulfhydryl or thiol group attached to a highly branched hydrocarbon structure.
This thiol functionality allows Tertiary Dodecyl Mercaptan (TDM) to participate efficiently in radical chain-transfer reactions during polymerization.

Tertiary Dodecyl Mercaptan (TDM) has particularly strong commercial relevance in polymer processes based on butadiene and styrene.
Tertiary Dodecyl Mercaptan (TDM) is used in styrene-butadiene latex, styrene-butadiene rubber and ABS manufacturing to regulate molecular chain length during polymer growth.
Control of chain length affects polymer viscosity, processability, molecular-weight distribution and the physical characteristics of the finished polymer.

Tertiary Dodecyl Mercaptan (TDM) is different from that of a polymerization initiator.
An initiator generates the radicals that begin polymer-chain growth, while TDM transfers radical activity from a growing polymer chain to another species and thereby terminates the original chain.
The newly generated sulfur-containing radical can subsequently participate in further reactions within the polymerization system.

Chain transfer reduces the average molecular weight that would otherwise be obtained from unrestricted propagation.
Increasing the amount of Tertiary Dodecyl Mercaptan (TDM) generally increases the frequency of chain-transfer events and can therefore reduce polymer chain length.
The optimum concentration depends on monomer composition, initiator system, polymerization temperature, conversion, particle size and the molecular-weight target of the final polymer.

Tertiary Dodecyl Mercaptan (TDM) thiol group reacts with a growing carbon-centered polymer radical through a hydrogen-transfer mechanism.
The growing polymer chain abstracts hydrogen from TDM and becomes terminated with a hydrogen-containing end group.
A thiyl radical derived from Tertiary Dodecyl Mercaptan (TDM) is formed simultaneously and can continue radical chemistry within the polymerization system.

Tertiary Dodecyl Mercaptan (TDM) mechanism changes the number and length of polymer molecules without requiring termination of the entire polymerization reaction.
Chain transfer therefore provides an important method for independently adjusting polymer molecular weight while maintaining useful monomer conversion.
Tertiary Dodecyl Mercaptan (TDM) technique is widely used industrially because polymer molecular weight strongly influences melt viscosity, solution viscosity, mechanical performance and downstream processing.

Tertiary Dodecyl Mercaptan (TDM) is particularly useful in emulsion polymerization of styrene and butadiene.
Styrene-butadiene systems can otherwise develop molecular weights that are too high for efficient processing or for the required rubber properties.
Tertiary Dodecyl Mercaptan (TDM) allows the manufacturer to regulate molecular growth during polymerization.

Tertiary Dodecyl Mercaptan (TDM) must be matched carefully to the polymerization recipe.
Insufficient chain-transfer agent may produce excessive molecular weight and high polymer viscosity.
Tertiary Dodecyl Mercaptan (TDM) can lower molecular weight more than required and may alter conversion rate, mechanical strength or other polymer characteristics.

Molecular-weight distribution is also important in commercial polymer manufacture.
A polymer with an unsuitable distribution may be difficult to process even if its average molecular weight appears acceptable.
Correct use of a mercaptan chain-transfer agent can help produce a more appropriate molecular-weight profile for the intended polymer-processing method.

In styrene-butadiene latex, molecular-weight control influences latex processability and the properties of the resulting polymer film or rubber phase.
Tertiary Dodecyl Mercaptan (TDM) allows chain length to be controlled while the latex particles are being formed and polymerized.
The required dosage depends on latex particle size, reaction conversion, monomer feed strategy and polymer specification.

Tertiary Dodecyl Mercaptan (TDM) in synthetic rubber production, control of chain length can affect mastication behavior, mixing, extrusion and mechanical properties.
Very high molecular weight can make uncured rubber difficult to process, while excessively low molecular weight may reduce mechanical performance.
Tertiary Dodecyl Mercaptan (TDM) provides a practical chemical method for achieving the molecular-weight range required by the rubber producer.

ABS production is another important application of Tertiary Dodecyl Mercaptan (TDM).
ABS contains acrylonitrile, butadiene and styrene components arranged in a complex multiphase polymer structure.
Tertiary Dodecyl Mercaptan (TDM) can be used during formation of styrene-acrylonitrile phases and grafting processes to control molecular weight and grafting behavior.

The molecular weight of the SAN phase has a significant effect on ABS processing.
Higher molecular weight can increase melt viscosity and mechanical strength, while lower molecular weight may improve flow during injection molding.
Tertiary Dodecyl Mercaptan (TDM) concentration can therefore be adjusted according to the balance required between processability and finished mechanical properties.

The degree of grafting in ABS can also be influenced indirectly by polymerization conditions involving Tertiary Dodecyl Mercaptan (TDM).
Chain transfer changes the growth behavior of styrene-acrylonitrile chains around polybutadiene rubber particles.
Tertiary Dodecyl Mercaptan (TDM) can alter morphology and subsequently influence impact performance, compatibility and processing characteristics.

Tertiary Dodecyl Mercaptan (TDM) is also useful in other radical polymerization systems.
Its thiol functionality can transfer radicals in polymerizations involving acrylic monomers, styrenic monomers and selected vinyl monomers.
Suitability depends on the chain-transfer constant of TDM toward the particular monomer and polymerization conditions.

The efficiency of a chain-transfer agent is not identical for every monomer.
The relative rates of propagation and chain transfer determine how strongly a given concentration of TDM changes molecular weight.
Formulation development should therefore rely on the actual polymer system rather than transferring dosage directly from an unrelated polymerization recipe.

Temperature also influences chain-transfer behavior.
Polymerization temperature changes radical concentration, propagation kinetics, monomer partitioning and reaction rates.
Tertiary Dodecyl Mercaptan (TDM) dosage may therefore change when the process temperature or initiator system is modified.

Monomer feed strategy provides another important process variable.
Batch, semi-batch and continuous polymerizations create different concentration profiles for monomer and chain-transfer agent.
Tertiary Dodecyl Mercaptan (TDM) can help maintain a more consistent molecular-weight profile as polymerization proceeds.

Tertiary Dodecyl Mercaptan (TDM) may be introduced with the monomer feed or through a separately controlled addition stream.
This provides greater control over the instantaneous mercaptan concentration inside polymer particles.
A carefully designed feed profile can reduce unwanted changes in molecular weight as conversion increases.

Tertiary Dodecyl Mercaptan (TDM) becomes especially important near high monomer conversion.
Monomer concentration decreases during the later stages of polymerization while the relative concentration of other components changes.
Chain-transfer behavior and polymerization kinetics can therefore differ from the early stages of the reaction.

Polymer manufacturers commonly optimize Tertiary Dodecyl Mercaptan (TDM) concentration experimentally.
Molecular weight, molecular-weight distribution, conversion, polymerization rate and final mechanical properties are monitored together.
This approach allows the chain-transfer level to be matched to the actual process rather than selected from a single generic dosage recommendation.

Tertiary Dodecyl Mercaptan (TDM) is also valuable where polymer melt viscosity needs to be controlled.
Melt viscosity rises strongly with molecular weight for many thermoplastic polymers.
Reducing molecular weight into the required range can significantly improve extrusion, injection molding and compounding behavior.

Flow properties are particularly important in ABS and other styrenic thermoplastics.
Tertiary Dodecyl Mercaptan (TDM) a resin that is excessively viscous may require higher processing pressure and temperature during molding.
Tertiary Dodecyl Mercaptan (TDM)-assisted molecular-weight control can help produce resin grades with targeted melt-flow characteristics.

Synthetic latex manufacturers also use molecular-weight control to manage viscosity and film performance.
The polymer chains formed inside latex particles ultimately determine many properties after water is removed.
Tertiary Dodecyl Mercaptan (TDM) provides a means of modifying these molecular characteristics during synthesis rather than after polymer production.

Tertiary Dodecyl Mercaptan (TDM) is not incorporated primarily as a bulk comonomer.
Only relatively small amounts are normally required compared with the principal monomers in a polymerization recipe.
Tertiary Dodecyl Mercaptan (TDM) value arises from the strong effect that thiol-mediated chain transfer can have on polymer molecular architecture.

Tertiary Dodecyl Mercaptan (TDM) is often described as a mixture of tertiary C12 mercaptan isomers.
For practical industrial polymerization, this mixture performs as the chain-transfer agent rather than as one isolated structural isomer.
Technical specifications should therefore be based on the actual commercial grade rather than assuming that every molecule corresponds to one single idealized structure.

The molecular formula C12H26S represents the C12 mercaptan composition used for chemical identification.
Commercial materials can contain a distribution of closely related branched structures around the intended tertiary dodecyl composition.
Tertiary Dodecyl Mercaptan (TDM) is why descriptions such as tert-Dodecanethiol mixture of isomers are common in technical and regulatory documentation.

Tertiary Dodecyl Mercaptan (TDM) has a characteristic mercaptan odor.
Even relatively low concentrations of sulfur-containing mercaptans can produce a strong detectable smell.
Odor control and closed handling are therefore important practical considerations in production facilities using TDM.

Appearance: Colorless to pale-yellow liquid
Chemical Family: Thiol / Mercaptan
Functional Group: Sulfhydryl (-SH)
Purity: Grade dependent
Density: approximately 0.858 g/cm3 at 20 °C
Viscosity: approximately 36 mPa·s at 20 °C
Boiling Point: approximately 233 °C
Melting Point: below -30 °C
Flash Point: approximately 95–97 °C, closed cup
Vapor Pressure: approximately 0.03 hPa at 20 °C
Vapor Pressure: approximately 0.8 hPa at 50 °C
Refractive Index: approximately 1.461 at 20 °C
Decomposition Temperature: approximately 350 °C
Water Solubility: Insoluble or extremely slightly soluble in water
Solubility: Soluble in styrene and most organic solvents
Odor: Strong characteristic mercaptan odor

The density of approximately 0.858 g/cm3 means that Tertiary Dodecyl Mercaptan (TDM) is less dense than water.
This value is also relevant when calculating volumetric feed rates in continuous or semi-batch polymerization processes.
Accurate mass-based dosing remains preferable where tight molecular-weight control is required.

The viscosity of approximately 36 mPa·s at 20 °C allows Tertiary Dodecyl Mercaptan (TDM) to be pumped and metered as a liquid under normal industrial conditions.
Transfer equipment should nevertheless be designed to prevent leaks because of the characteristic odor and environmental hazards of the product.
Closed metering systems are generally preferable to open manual transfer.

The boiling point is around 233 °C, which is substantially higher than normal polymerization temperatures used in many emulsion systems.
Tertiary Dodecyl Mercaptan (TDM) therefore remains predominantly in the liquid phase during typical polymerization handling.
Tertiary Dodecyl Mercaptan (TDM) relatively low vapor pressure at ambient temperature reduces volatility but does not eliminate odor or inhalation concerns.

Tertiary Dodecyl Mercaptan (TDM) vapor pressure increases with temperature.
A value of approximately 0.03 hPa is reported at 20 °C, while approximately 0.8 hPa is reported at 50 °C.
Heated storage or processing can consequently increase vapor release and should be accompanied by suitable containment and ventilation.

The flash point is approximately 95–97 °C in closed-cup testing.
Tertiary Dodecyl Mercaptan (TDM) is therefore a combustible organic liquid even though it is considerably less volatile than low-boiling hydrocarbon solvents.
Heat, flames and uncontrolled ignition sources should be avoided during storage and processing.

Tertiary Dodecyl Mercaptan (TDM) remains liquid at low temperatures because its melting point is below approximately -30 °C.
This low-temperature fluidity simplifies storage and transfer in many industrial environments.
Extreme cooling can still change viscosity and pumping behavior even before the material reaches its freezing region.

Tertiary Dodecyl Mercaptan (TDM) water solubility is extremely low.
This hydrophobicity supports partitioning into monomer and polymer phases during emulsion polymerization.
Tertiary Dodecyl Mercaptan (TDM) also means that water alone is not an effective medium for dissolving or removing significant quantities of spilled material.

Tertiary Dodecyl Mercaptan (TDM) is soluble in styrene and in most common organic solvents.
This property is particularly convenient in polymer manufacturing because the chain-transfer agent can be introduced together with hydrophobic monomers.
Compatible solvent or monomer feeds can also support accurate and uniform dosing.

Uses:
Tertiary Dodecyl Mercaptan (TDM) is primarily used as a chain transfer agent for controlling molecular weight during free-radical polymerization.
Its industrial value is concentrated in polymer processes where unrestricted chain growth would produce molecular weights that are unsuitable for processing or final product performance.
Tertiary Dodecyl Mercaptan (TDM) allows the polymer producer to regulate chain length without fundamentally changing the principal monomer composition.

Styrene-butadiene latex is one of the most established applications for Tertiary Dodecyl Mercaptan (TDM).
Tertiary Dodecyl Mercaptan (TDM) participates in emulsion polymerization as a molecular-weight regulator for styrene-butadiene copolymers.
Controlled molecular weight helps manufacturers obtain latex grades with the processing and film characteristics required for downstream use.

SB latex is used in several industrial markets.
Applications can include paper coating binders, carpet backing, construction formulations and other latex-based products depending on polymer composition.
Tertiary Dodecyl Mercaptan (TDM) functions upstream during synthesis and is not used as the main functional ingredient of the finished coated or bonded article.

Styrene-butadiene rubber represents another major application.
Tertiary Dodecyl Mercaptan (TDM) is used as a polymerization modifier during manufacture of SBR where controlled chain length is important for rubber processing.
The resulting molecular-weight range affects mixing, extrusion, mastication and the balance of properties obtained after compounding and curing.

Tertiary Dodecyl Mercaptan (TDM) is widely used in tires and technical rubber goods.
The role of Tertiary Dodecyl Mercaptan (TDM) occurs during polymer synthesis before fillers, oils, sulfur systems and other rubber-compounding ingredients are introduced.
Accurate control at the polymerization stage contributes to consistent behavior during later rubber processing.

ABS manufacture is another important application of Tertiary Dodecyl Mercaptan (TDM).
Tertiary Dodecyl Mercaptan (TDM) can control the molecular weight of styrene-acrylonitrile polymer formed during ABS synthesis and can influence graft-polymerization behavior around polybutadiene particles.
Tertiary Dodecyl Mercaptan (TDM) relevant to the development of ABS grades requiring controlled melt flow, toughness and processing behavior.

Tertiary Dodecyl Mercaptan (TDM) can help regulate the molecular weight of the SAN matrix or grafted material.
Changing TDM concentration can modify grafting degree and the molecular characteristics of polymer formed around the rubber phase.
These changes can affect morphology and ultimately influence impact strength and compatibility within the multiphase resin.

Injection-molding grades of ABS require carefully controlled melt viscosity.
Excessively high molecular weight can reduce flow into complex molds, while excessively low molecular weight can reduce strength.
Tertiary Dodecyl Mercaptan (TDM) provides one of the process tools available to resin producers for obtaining the required balance.

Extrusion-grade ABS may require a different molecular-weight range from high-flow injection grades.
Tertiary Dodecyl Mercaptan (TDM) level can therefore vary among polymer grades even when the basic monomer composition remains similar.
Technical purchasing of TDM should take into account the specific polymerization recipe rather than only the generic polymer family.

Tertiary Dodecyl Mercaptan (TDM) can also be used in styrene polymerization.
Chain transfer to mercaptan reduces the length of polystyrene chains formed during radical polymerization.
This allows molecular weight and melt-processing behavior to be adjusted according to the intended resin grade.

Styrene-acrylonitrile copolymers are another relevant application.
SAN molecular weight influences viscosity, strength, heat resistance and processing characteristics.
Tertiary Dodecyl Mercaptan (TDM) can be introduced during copolymerization to regulate chain growth and produce the desired molecular-weight profile.

Acrylic polymerization can also employ mercaptan chain-transfer chemistry.
Tertiary Dodecyl Mercaptan (TDM) can be used where its hydrophobicity, chain-transfer efficiency and process compatibility match the selected acrylic monomer system.
Tertiary Dodecyl Mercaptan (TDM) required concentration may differ substantially from that used for styrene-butadiene or ABS processes.

Acrylic emulsions used in coatings and adhesives often require carefully controlled polymer molecular weight.
Very high molecular weight may increase viscosity or interfere with film formation, while lower molecular weight can alter strength and adhesion.
Mercaptan dosage therefore forms part of the wider design of polymer composition and emulsion architecture.

Tertiary Dodecyl Mercaptan (TDM) can also be used in polymerization processes involving butadiene-rich systems.
Mercaptans have an established role in free-radical polymerization of conjugated dienes.
Their chain-transfer activity provides control over molecular architecture while allowing high monomer conversion.

Polybutadiene-related latex processes may use TDM where a specific molecular-weight distribution or grafting behavior is required.
Tertiary Dodecyl Mercaptan (TDM) can be particularly relevant when the rubber latex will later serve as a substrate for graft polymerization.
The properties of the original rubber phase influence the morphology and performance of the final impact-modified resin.

Tertiary Dodecyl Mercaptan (TDM) also has a role in polymerization research and process development.
Tertiary Dodecyl Mercaptan (TDM) is commonly used as a reference chain-transfer agent when investigating radical-polymerization kinetics and molecular-weight control.
Its established industrial behavior makes it useful when comparing alternative mercaptans or other chain-transfer technologies.

Tertiary Dodecyl Mercaptan (TDM) concentration and molecular weight can be used during process optimization.
Several concentrations may be screened while monomer conversion, molecular weight and molecular-weight distribution are measured.
The selected level is then determined by the combined processing and performance requirements of the polymer.

For semi-batch production, controlled TDM addition can be particularly valuable.
The chain-transfer agent can be distributed through the monomer feed to maintain a more stable concentration during the course of polymerization.
This approach can reduce variation in molecular weight between polymer chains formed early and late in the reaction.

Continuous polymerization can also use controlled mercaptan dosing.
Accurate feed control is essential because small changes in Tertiary Dodecyl Mercaptan (TDM) concentration may produce measurable differences in polymer molecular weight.
Metering equipment and process analytical control therefore become important parts of industrial implementation.

Tertiary Dodecyl Mercaptan (TDM) can improve processability indirectly through molecular-weight reduction.
Lower polymer molecular weight usually reduces melt or solution viscosity within a relevant formulation range.
This can reduce processing pressure and improve flow during extrusion, pumping, mixing or molding.

The objective is not always to produce the lowest possible molecular weight.
Mechanical strength, toughness and cohesive properties often depend on maintaining sufficient chain length.
Tertiary Dodecyl Mercaptan (TDM) dosage is therefore optimized to reach a target molecular weight rather than simply maximized.

Molecular-weight distribution can be as important as average molecular weight.
Broad or poorly controlled distributions may produce inconsistent melt behavior and variable mechanical performance.
A properly designed chain-transfer strategy can contribute to a more predictable polymer population.

Tertiary Dodecyl Mercaptan (TDM) is particularly effective because the thiol group transfers hydrogen readily to growing radical chains.
This reaction terminates one chain while generating a sulfur-centered radical capable of continuing radical chemistry.
The process allows chain number to increase while average individual chain length decreases.

This mechanism can also influence end-group chemistry.
Polymer chains terminated through mercaptan transfer contain end groups derived from the chain-transfer reaction.
Although present at relatively low concentrations, these end groups form part of the final polymer molecular structure.

The sulfur content introduced through Tertiary Dodecyl Mercaptan (TDM) is normally small because chain-transfer agents are used at low concentrations relative to monomer.
Nevertheless, odor, residual mercaptan and polymer-purity requirements can be important for certain applications.
Polymerization conversion and post-treatment conditions may therefore be optimized to minimize residual free mercaptan.

Residual odor is particularly relevant for polymers used in enclosed environments or consumer products.
Unreacted mercaptans are detectable at very low concentrations because of their strong smell.
High conversion, stripping and proper finishing can help reduce residual volatile sulfur compounds in the polymer product.

Tertiary Dodecyl Mercaptan (TDM) is also used as a chemical intermediate in selected specialty applications.
The thiol group can participate in addition and substitution chemistry beyond polymer-chain transfer.
Tertiary Dodecyl Mercaptan (TDM) principal large-scale commercial importance, however, remains polymer manufacturing and molecular-weight regulation.

Heavy mercaptans can also serve as building blocks in sulfur-containing additives.
Tertiary alkyl groups combined with thiol functionality provide useful starting chemistry for specialty sulfur compounds.
Application suitability depends on the specific reaction route and required downstream molecular structure.

Lubricant-additive chemistry represents one secondary application area for tertiary mercaptans.
Sulfur-containing structures can be incorporated into additive molecules designed for specialized lubricant performance.
Tertiary Dodecyl Mercaptan (TDM) itself should nevertheless be distinguished from the finished lubricant additive, because it normally serves as a reactant or intermediate rather than the complete additive package.

For technical purchasing, purity and composition are important.
Tertiary Dodecyl Mercaptan (TDM) may be supplied as a distribution of branched C12 mercaptan isomers rather than one isolated structural compound.
The buyer should therefore compare supplier specifications based on mercaptan content, density, color, sulfur content and relevant impurities.

Odor should also be considered in receiving and storage design.
The characteristic mercaptan smell can become noticeable from very small leaks or open transfer operations.
Closed unloading connections, appropriate ventilation and disciplined housekeeping reduce this problem substantially.

Tertiary Dodecyl Mercaptan (TDM) compatibility is another consideration.
Storage tanks, seals, pumps and transfer lines should be selected for compatibility with organic mercaptans and the temperatures used in operation.
The current supplier SDS should be consulted before equipment materials are finalized.

The broad application profile of TDM includes styrene-butadiene latex, styrene-butadiene rubber, ABS, SAN, styrenic polymers, selected acrylic polymers and other radical-polymerization systems.
Across these applications, its central function is molecular-weight control through radical chain transfer.
This makes Tertiary Dodecyl Mercaptan (TDM) primarily a polymer-process chemical rather than a conventional plasticizer, monomer, surfactant or finished polymer additive.

Safety Profile:
Tertiary Dodecyl Mercaptan (TDM) is a combustible organosulfur liquid and should be handled using appropriate industrial controls.
Current safety classifications identify skin irritation and skin sensitization as important hazards associated with tert-dodecanethiol.
Direct and repeated contact with the skin should therefore be minimized during sampling, transfer, maintenance and production operations.

Suitable chemical-resistant gloves should be used where contact is possible.
Contaminated clothing should be removed and washed before reuse according to workplace procedures.
If skin irritation or an allergic reaction develops, medical evaluation should be obtained.

Tertiary Dodecyl Mercaptan (TDM) also presents a significant environmental hazard.
Current safety information classifies tert-dodecanethiol as very toxic to aquatic life with long-lasting effects in commonly supplied high-purity grades.
Uncontrolled release to drains, surface water, soil or wastewater systems should therefore be prevented.

Spills should be contained before they can enter environmental drainage systems.
Suitable inert absorbent materials can be used for small releases where this is compatible with the applicable SDS.
Collected material should be placed into appropriate waste containers and disposed of through an authorized waste route.

Tertiary Dodecyl Mercaptan (TDM) has a strong mercaptan odor.
The odor can become noticeable at very low airborne concentrations and can create significant nuisance even from relatively small releases.
Closed transfer and effective ventilation are therefore valuable for both occupational hygiene and odor management.

The product has relatively low vapor pressure at room temperature.
Low volatility does not remove the need for ventilation because heated handling can increase vapor generation and the odor threshold is extremely low.
Local exhaust ventilation should be considered at filling, sampling and open processing locations.

Tertiary Dodecyl Mercaptan (TDM) is combustible and has a closed-cup flash point around 95–97 °C.
Ignition sources, open flames and excessive heat should therefore be controlled in storage and process areas.
Firefighting procedures should take into account the potential formation of carbon oxides and sulfur oxides during combustion.

Tertiary Dodecyl Mercaptan (TDM) should be stored in tightly closed containers.
Storage areas should be cool, dry and well ventilated, with product protected from unnecessary heat and incompatible materials.
Supplier-specific storage requirements should be followed because commercial TDM grades can differ slightly in composition and specification.

Tertiary Dodecyl Mercaptan (TDM) is essentially insoluble in water.
Water washing alone may therefore spread spilled material rather than effectively dissolve it.
Spill-response methods should focus on containment and controlled collection.

Eye contact should be avoided during transfer and sampling.
Protective eyewear should be worn where splashing is possible even when the specific commercial SDS does not assign the highest eye-hazard category.
Any eye exposure should be rinsed promptly with water according to the applicable first-aid instructions.

Good occupational hygiene is important because mercaptan odor can contaminate clothing and equipment.
Personnel should wash hands after handling and before eating, drinking or smoking.
Work areas should be maintained so that small leaks do not remain unnoticed or continue generating odor.

The specific classification of commercial TDM should always be verified from the current supplier SDS.
Hazard classifications can differ slightly between suppliers, jurisdictions and product compositions, particularly for environmental and irritation endpoints.
The SDS for the actual purchased grade should therefore take precedence over generic database descriptions.

Supply Of TERTIARY DODECYL MERCAPTAN (TDM):
For further information about Tertiary Dodecyl Mercaptan (TDM), including product availability, technical specifications, packaging options, application suitability and supply conditions, please contact Ataman Kimya.
Tertiary Dodecyl Mercaptan (TDM) is particularly relevant to manufacturers of SB latex, SBR, ABS, SAN and other polymers requiring controlled molecular weight during radical polymerization.
Ataman Kimya can provide information required to evaluate the product according to mercaptan content, density, purity, physical properties, packaging and the requirements of the intended polymerization process.

Technical documentation such as the applicable Technical Data Sheet, Safety Data Sheet and Certificate of Analysis should be reviewed before final raw-material approval.
For polymer producers, the selected Tertiary Dodecyl Mercaptan (TDM) grade should be evaluated together with monomer composition, initiator system, reaction temperature, feed strategy and target molecular weight.
For further technical and commercial information regarding Tertiary Dodecyl Mercaptan (TDM), please contact Ataman Kimya.