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tert-dodecylthiol

tert-dodecylthiol structure

CAS No:
25103-58-6
Formula:
C12H26S
Chemical Name:
tert-dodecylthiol
Synonyms:
tert-DodecylMercaptan (Mixture of is;tert-DodecylMercaptan Mixture of isoMers, 98.5%;tert-Dodecanet;dodecanethioltertiaire;tert-Dodecanethiol (mixture of isomers) for synthesis;2,3,3,4,4,5-Hexamethyl-2-hexanethiol;tert-Dodecylmercaptan (mixture of isomers);Dodecanethiol
Categories:
Chemical Reagents > Organic Reagents

Description

Clear white to pale yellow liquid with a repulsive odor.

Poison by ingestion. Moderately toxic by intraperitoneal route. A skin and eye irritant. Combustible when exposed to heat or flame; can react vigorously with oxidizing materials. To fight fire, use foam, Con, dry chemical. When heated to decomposition it emitstoxic fumes of SOx,. See also MERCAPTANS and SULFATE

tert-dodecylthiol Basic Attributes

Molecular Weight：

202.4

Exact Mass：

202.175522

BRN：

1738382

EC Number：

246-619-1

TSCA：

TSCA listed

Color/Form：

Colorless to Almost colorless

HScode：

29309070

Characteristics

PSA：

38.80000

XLogP3：

5.46

Appearance：

White to yellow liquid.

Density：

0.86 g/mL at 20 °C (lit.)

Melting Point：

-7.5°C

Boiling Point：

227-248 °C (lit.)

Flash Point：

195 °F

Refractive Index：

1.4486 (estimate)

Water Solubility：

<0.1 g/100 mL at 23 ºC

Storage Conditions：

Store below +30°C.

Vapor Pressure：

1.33 hPa (25.5 °C)

Toxicity：

LD50 orally in Rabbit: 6800 mg/kg LD50 dermal Rabbit 12600 mg/kg

Air and Water Reactions：

Sensitive to moisture. Sensitive to prolonged exposure to air. Insoluble in water.

Reactivity Profile：

tert-dodecylthiol is incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Generate heat and in many cases hydrogen gas and possibly hydrogen sulfide with these materials. May liberate hydrogen sulfide upon decomposition or reaction with an acid. Incompatible with oxygen. Incompatible with strong oxidizing agents . May be sensitive to heat.

Autoignition Temperature：

350 °C

Critical Temperature & Pressure：

Store below +30°C.

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 3082 9/PG 3

wgk germany：

hazard class code：

Xi,N

safety instructions：

26-36-60

RTECS Number：

JR3150000

Marks：

Xi,N

Precautionary statement(s)：

P273-P305 + P351 + P338-P501

Hazard Statements：

36/38-50/53

RIDADR：

UN 3082 9/PG 3

Fire Hazards：

tert-dodecylthiol is combustible.

tert-dodecylthiol Use and Manufacturing

Methods of Manufacturing

Dodecene [112-41-4], obtained by tetramerization of propylene, reacts with hydrogen sulfide at about 20℃ for 2h in the presence of aluminum trichloride catalyst. The molar ratio of hydrogen sulfide is the amount of dodecene 1.5 times the amount of aluminum trichloride and 2.5% of dodecene. The reaction product is separated, pickled, washed with hot water, and dried to obtain t-dodecanethiol. In production, hydrogen sulfide can be generated by the action of saturated sodium sulfide solution and 20% sulfuric acid. Raw material consumption quota: crude decaene (boiling range 180-208℃) 1100kg/t, aluminum trichloride 123kg/t, sodium sulfide (60%) 1220kg/t, sulfuric acid (92.5%) 1270kg/t.

Uses

The product is a polymerization regulator for synthetic rubber, synthetic resin, and synthetic fiber. It is especially used in the production of styrene-butadiene rubber and ABS resin. It can reduce the degree of branching of the polymer chain and make the molecular weight distribution uniform. It is often used as a nonionic surfactant. And organic synthesis intermediates. Used to manufacture fungicides, insecticides, rust inhibitors, lubricant additives, medicines, etc. It can also be used as ~~"golden water~~" in the ceramic industry and acidizing agent for oil wells; 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.

Tert-dodecylthiol is used in the polymer industry and as a processing regulator, processing aid (i.e. pH value regulator, flocculant and precipitant), lubricant, for the manufacture of plastic materials, resins, paints, coatings, rubber products, and mining, among other things.

Downstream Products

Butadiene-styrene copolymer

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