tert-Dodecanethiol (mixture of isomers)
tert-dodecylmercaptan
CAS: 25103-58-6
Molecular Formula: C12H26S
tert-Dodecanethiol (mixture of isomers) - Names and Identifiers
| Name | tert-dodecylmercaptan |
| Synonyms | TDM TDDM tert-Dodecanethiol tert-dodecylmercaptan Tert-dodecyl mercaptan dodecanethiol, mixed isomers 2,3,3,4,4,5-hexamethylhexane-2-thiol tert-Dodecanethiol (mixture of isomers) |
| CAS | 25103-58-6 |
| EINECS | 246-619-1 |
| InChI | InChI=1/C12H26S/c1-9(2)10(3,4)11(5,6)12(7,8)13/h9,13H,1-8H3 |
tert-Dodecanethiol (mixture of isomers) - Physico-chemical Properties
| Molecular Formula | C12H26S |
| Molar Mass | 202.4 |
| Density | 0.839g/cm3 |
| Melting Point | -7.5℃ |
| Boling Point | 212°C at 760 mmHg |
| Flash Point | 68.8°C |
| Water Solubility | <0.1 g/100 mL at 23℃ |
| Solubility | <0.1g/l |
| Vapor Presure | 0.257mmHg at 25°C |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.454 |
| Physical and Chemical Properties | Colorless to pale yellow viscous liquid. Freezing point -7 ℃, boiling point 227-248 ℃,165-166 ℃(5.19kPa), relative density 0.8450(20/20 ℃), refractive index 1.4589, flash point 90 ℃. Soluble in methanol, ether, acetone, benzene, gasoline and acetate, insoluble in water. |
| Use | Is the best relative molecular weight regulator and chain transfer agent in the polymerization process of Styrene Butadiene Rubber, Nitrile Rubber, synthetic resin and so on |
tert-Dodecanethiol (mixture of isomers) - Risk and Safety
| Hazard Symbols | Xi - Irritant N - Dangerous for the environment  |
| Risk Codes | R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S60 - This material and its container must be disposed of as hazardous waste. |
| UN IDs | UN 3082 |
| WGK Germany | 2 |
| RTECS | JR3150000 |
| Autoignition Temperature | 350 °C |
| HS Code | 29309070 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 6800 mg/kg LD50 dermal Rabbit 12600 mg/kg |
tert-Dodecanethiol (mixture of isomers) - Upstream Downstream Industry
| Raw Materials | Hydrogen sulfide |
| Downstream Products | Styrene Butadiene Rubber |
tert-Dodecanethiol (mixture of isomers) - Introduction
Overview
Styldecyl mercaptan is one of the important varieties of mercaptan series products. It is mainly used to adjust the molecular weight during the preparation of styrene-butadiene rubber, ABS resin and nitrile rubber, which can effectively reduce the branching degree of the polymer chain and make the molecular weight distribution Uniform; in addition, it can also be used as a stabilizer and antioxidant for the production of polyolefins such as polyvinyl chloride, polyethylene, and polypropylene; it can also be used to synthesize non-ionic surfactants, organic chemicals, fungicides, pesticides, lubricating oil additives, oilfield chemicals and medicines.
APPLICATION
Styldecyl mercaptan, colorless or pale yellow liquid. It can be used as a polymerization regulator for synthetic rubber, synthetic fiber, and synthetic resin; it is also used to produce polyvinyl chloride stabilizers, drugs, pesticides, fungicides, detergents, etc.
Preparation
12 grams of water and 40 grams of dodecene were introduced into the plant through a funnel. After the factory is sealed, the reaction mixing pump is put into operation (speed: 2800min-1), and then the entire pumping cycle system (including the pump head) manufactured in the jacket design is restored to the initial temperature. The reaction is started by gradually injecting the first 10 bar of carbon dioxide, and then gradually injecting 20 bar of hydrogen sulfide gas to a total pressure of about 30°C. 31 bar. During the experiment, the H2S feed of the reactor system was kept open so that the amount of reacted hydrogen sulfide could be replenished into the reaction system. During the next 2 hours, the mixture was uniformly heated to 60°C. After another 3 hours, all dissolved gas components are removed from the biphasic liquid sample by decompressing at the discharge valve and further heating to 100°C. The composition of the organic liquid phase (upper phase) is analyzed by gas chromatography, and it is possible to distinguish the reactants (olefins), the main products (tert-dodecyl mercaptan), and the minor components (thioethers).
Last Update：2024-04-10 22:29:15
tert-Dodecanethiol (mixture of isomers) - Use
This product is a polymerization regulator for synthetic rubber, synthetic resin, and synthetic fiber. It is especially commonly used in the manufacture of styrene-butadiene rubber and ABS resin. It can reduce the branching degree of polymer chains and make the molecular weight distribution uniform. It is often used as an intermediate for non-ionic surfactants and organic synthesis. Used to make fungicides, pesticides, rust inhibitors, lubricating oil additives, drugs, etc. It can also be used as "golden water" and oil well acidifier in the ceramic industry; it is the best relative molecular mass regulator and chain transfer agent in the polymerization process of styrene-butadiene rubber, nitrile rubber, synthetic resin, etc.
Last Update：2024-04-10 22:41:03
tert-Dodecanethiol (mixture of isomers) - Production method
the dienes [112-41-4] obtained by propylene tetropolymerization react with hydrogen sulfide at about 20 ℃ for 2 hours in the presence of aluminum trichloride catalyst. the dosage of hydrogen sulfide is 1.5 times that of dienes according to molar ratio, and the dosage of aluminum trichloride is 2.5% to that of dienes. The reaction product is separated, pickled, washed with hot water, and dried to obtain tert. Hydrogen sulfide in production can occur by the interaction of saturated sodium sulfide solution with 20% sulfuric acid. Raw material consumption quota: crude decene (boiling range 180-208 ℃)1100kg/t, aluminum trichloride 123kg/t, sodium sulfide (60%)1220kg/t, sulfuric acid (92.5%)1270kg/t.
Last Update：2024-04-10 22:29:15
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Raw Materials for tert-Dodecanethiol (mixture of isomers)
Downstream Products for tert-Dodecanethiol (mixture of isomers)