1-Dodecanethiol

Product Introduction

1-Dodecanethiol, commonly known as n-Dodecyl Mercaptan or NDM (CAS 112-55-0), is a colorless to pale yellow liquid with a characteristic pungent odor. As a long-chain aliphatic thiol, it is highly valued in the chemical industry for its reactive sulfhydryl (-SH) group and hydrophobic 12-carbon chain. 1-Dodecanethiol (CAS 112-55-0) is primarily used as a high-efficiency molecular weight regulator (chain transfer agent) in radical polymerization processes. Beyond polymers, it is a critical reagent in nanotechnology for forming self-assembled monolayers (SAMs) on noble metal surfaces, providing exceptional corrosion resistance and surface functionalization.

Product Selling Points

• Precise Molecular Weight Control: Acts as a superior chain transfer agent, ensuring narrow molecular weight distribution in ABS, SBR, and NBR production.

• High Purity Grade: Our standard assay is ≥ 98.0%, minimizing impurities that could interfere with sensitive polymerization or surface modification.

• Excellent Surface Affinity: Strong sulfur-to-metal bonding makes it the industry standard for creating hydrophobic self-assembled monolayers (SAMs) on gold and silver.

• Versatile Reactivity: The terminal mercaptan group allows for easy conversion into sulfonates, thioethers, and other high-value intermediates.

• Polymer Stability: Enhances the thermal and mechanical stability of synthetic rubbers and acrylic resins during processing.

• Stable Supply Chain: Chemfine provides consistent bulk availability with UN-approved packaging for safe international transport.

Applications

Polymerization Chain Transfer Agent This product is extensively used in the production of synthetic rubbers (SBR, NBR) and plastics (ABS, PS) to control the chain length of polymers, thereby optimizing the physical properties and processability of the final material.

Surface Modification and Nanotechnology In high-tech research and electronics, 1-Dodecanethiol is used to functionalize gold nanoparticles and flat gold surfaces. It forms highly ordered, hydrophobic monolayers that protect against corrosion and oxidation.

Corrosion Inhibitors It serves as a base component for specialized corrosion inhibitors in the oil and gas industry and for protecting precision metal parts during storage and transit.

Surfactant and Additive Intermediate It is a starting material for the synthesis of various surfactants, lubricating oil additives, and specialized antioxidants used in the rubber and plastic industries.

Packaging

Standard industrial packaging options for 1-Dodecanethiol include:

• 170kg tight-head steel drums (Standard export packaging).

• 850kg IBC tanks for streamlined bulk handling in manufacturing plants.

• ISO Tanks for large-volume international maritime transport (approx. 18-20 MT).

• Small-volume sample bottles available for laboratory evaluation and surface science research.

Storage

1-Dodecanethiol should be stored in a cool, dry, and well-ventilated warehouse. It has a strong, persistent odor; therefore, containers must be kept tightly sealed and stored in a dedicated area. Keep away from heat, sparks, open flames, and direct sunlight. It should be stored separately from strong oxidizing agents, strong bases, and alkali metals. Ensure the facility has proper spill containment and charcoal filtration systems for odor control.

Related and Similar Products

1. tert-Dodecyl Mercaptan (TDM) – CAS 25103-58-6

2. 1-Octanethiol – CAS 111-88-6

3. 1-Tetradecanethiol – CAS 2079-95-0

4. 1-Hexadecanethiol – CAS 2917-26-2

5. n-Butyl Mercaptan – CAS 109-79-5

6. Ethyl Mercaptan – CAS 75-08-1

7. Dodecyl Sulfide – CAS 2469-45-6

8. Thiourea – CAS 62-56-6

9. Stearyl Mercaptan – CAS 2885-00-9

10. 1-Decanethiol – CAS 143-10-2

FAQ

Polymerization and Industrial Use

• Q1: Why is 1-Dodecanethiol preferred over TDM in some formulations? A1: 1-Dodecanethiol (NDM) is a primary thiol and generally has a higher chain transfer constant than tertiary thiols like TDM, allowing for faster reaction rates and different molecular weight profiles in specific acrylic systems.

• Q2: Does NDM affect the color of the final polymer? A2: When used in correct dosages and with high-purity (≥ 98.0%) material, it should not significantly impact the color or clarity of resins like ABS or PMMA.

• Q3: How does it improve the processability of synthetic rubber? A3: By limiting the polymer chain length, it reduces the viscosity of the rubber compound, making it easier to mold, extrude, and mill.

Surface Science and Safety

• Q1: Can 1-Dodecanethiol be used for making gold nanoparticle solutions? A1: Yes, it is one of the most common capping agents used to stabilize gold nanoparticles in organic solvents, preventing aggregation through steric hindrance.

• Q2: What is the best way to manage the strong odor of NDM? A2: Handling should occur in a closed system or under a high-efficiency fume hood. Spills can be neutralized using dilute bleach (sodium hypochlorite) solutions which oxidize the mercaptan to a less odorous sulfonate.

• Q3: Is 1-Dodecanethiol considered a hazardous material for shipping? A3: Yes, it is typically classified as a Marine Pollutant and often falls under UN 3082 or specific Class 9/Class 6.1 categories depending on the concentration and regional regulations.