Sulfole® 120 Mercaptan is a sulfur-based chemical intermediate and chain transfer agent primarily composed of t-dodecyl mercaptan (TDM).
Sulfole® 120 Mercaptan is a mixture of predominantly t-dodecyl mercaptan (also known as tertiary dodecyl mercaptan or TDM) with other tertiary mercaptans. The intermediate is an excellent source of organic sulfur and contains branched C12H25 isomers that can be reacted to produce bulky C12H25 alkylthio substituents in chemical compounds. Sulfole® 120 Mercaptan is commonly used to produce lubricant additives with application in metalworking fluids and automotive and industrial lubricants. It is also used as a chain transfer agent to control the molecular weight of polymer modifiers undergoing free radical polymerization. Additionally, the mercaptan has applications in the production of butadiene and polystyrene polymers and in the manufacture of metallic decorative inks.
Physical state: Liquid
Color: Colorless
Odor: Repulsive
Flash point, °C: 98–110
Oxidizing properties: No
Autoignition temperature, °C: 198–230
Thermal decomposition, °C: 149
Molecular formula: C12H26S
Molecular weight, g/mol: 202.44
pH: Not applicable
Melting point, °C: −16
Boiling point, °C: 233
Vapor pressure, Pa at 24°C: 4.00
Relative density at 16°C: 0.86
Water solubility, mg/L: 0.00393
Method: OECD Test Guideline 105
Partition coefficient, n-octanol/water, pow at 20°C: 7.43
Viscosity, dynamic, cP at 20°C: 2.6
Relative vapor density: 3 (air = 1.0)
Evaporation rate: <1
CAS number: 25103-58-6
Primary Chemistry:
t-Dodecyl mercaptan, tertiary dodecyl mercaptan
Some sensitive synthesis reactions require specific, high-quality sulfur-based chemistries to prevent inconsistent or inefficient production results.
Lubricant additives Rubber and polymer production Metallic inks
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