ChemicalBook
Chinese Japanese Germany Korea

2-Methyl-2-propanethiol

2-Methyl-2-propanethiol
2-Methyl-2-propanethiol structure
CAS No.
75-66-1
Chemical Name:
2-Methyl-2-propanethiol
Synonyms
TBM;TBM(TM);tert-C4H9SH;tert.-Butaneth;tert-Butylthiol;-2-propanethioL;2-Isobutanethiol;TERT-BUTANETHIOL;T-BUTYL MERCAPTAN;TERT-BUTYL MERCAPTAN
CBNumber:
CB9432330
Molecular Formula:
C4H10S
Formula Weight:
90.19
MOL File:
75-66-1.mol

2-Methyl-2-propanethiol Properties

Melting point:
-1.1 °C
Boiling point:
62-65 °C(lit.)
Density 
0.8 g/mL at 25 °C(lit.)
vapor density 
3.1 (vs air)
vapor pressure 
303.5 mm Hg ( 37.7 °C)
refractive index 
n20/D 1.423(lit.)
Flash point:
−12 °F
storage temp. 
Flammables area
solubility 
1.47g/l slightly soluble
form 
Liquid
pka
pK1:11.22 (25°C,μ=0.1)
color 
Clear colorless
Odor Threshold
0.000029ppm
Water Solubility 
Slightly soluble in water
Merck 
14,1579
BRN 
505947
Stability:
Stable. Flammable - note low flashpoint. Incompatible with strong oxidizing agents.
CAS DataBase Reference
75-66-1(CAS DataBase Reference)
EWG's Food Scores
1
FDA UNII
489PW92WIV
NIST Chemistry Reference
2-Propanethiol, 2-methyl-(75-66-1)
EPA Substance Registry System
2-Propanethiol, 2-methyl- (75-66-1)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS02,GHS07,GHS09
Signal word  Danger
Hazard statements  H225-H317-H411
Precautionary statements  P210-P273-P280
Hazard Codes  F,Xi,Xn,N
Risk Statements  11-41-65-43-36-51/53
Safety Statements  3-16-26-39-38-36/37-61
RIDADR  UN 2347 3/PG 2
WGK Germany  3
RTECS  TZ7660000
13
HazardClass  3.1
PackingGroup  II
HS Code  29309090
NFPA 704
3
0

2-Methyl-2-propanethiol price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 109207 2-Methyl-2-propanethiol contains 50-150 ppm 4-tert-Butylcatechol, 99% 75-66-1 100ml $33.7 2021-03-22 Buy
Sigma-Aldrich 109207 2-Methyl-2-propanethiol 99% 75-66-1 2l $116 2021-03-22 Buy
TCI Chemical M0405 tert-Butyl Mercaptan >98.0%(GC) 75-66-1 25mL $17 2021-03-22 Buy
TCI Chemical M0405 tert-Butyl Mercaptan >98.0%(GC) 75-66-1 500mL $32 2021-03-22 Buy
Sigma-Aldrich 109207 2-Methyl-2-propanethiol contains 50-150 ppm 4-tert-Butylcatechol, 99% 75-66-1 500ml $36.4 2021-03-22 Buy

2-Methyl-2-propanethiol Chemical Properties,Uses,Production

Description

tert-Butylthiol, also known as 2-methyl propane-2-thiol, 2- methyl-2-propane thiol, tert-butyl mercaptan (TBM), and t-BuSH, is an organo sulfur compound with the formula (CH3)3CSH. This thiol may have been used as a flavoring agent, as an odorant for natural gas (which is odorless), and also in a wide range of organic reactions.

Chemical Properties

liquid with an exceedingly unpleasant smell

Uses

2-Methyl-2-propanethiol was used in reaction of 2-methyl-2-propanethiol on Mo(110) using temperature programmed reaction, high resolution electron enegy loss and X-ray photoelectron spectroscopies. It was used in the synthesis of chain-transfer agents for reversible addition-fragmentation chain-transfer copolymerization of vinylidene chloride and methyl acrylate.

Uses

Tert-Butylthiol is the main ingredient in many gas odorant blends. It is always utilized as a blend of other compounds, typically dimethyl sulfide, methyl ethyl sulfide, tetrahydrothiophene or other mercaptans (isopropyl mercaptan, sec-butyl mercaptan and/or n-butyl mercaptan, due to its rather high melting point of 273 K. These blends are used only with natural gas and not propane, as the boiling points of these blends and propane are quite different. As propane is delivered as a liquid and vaporizes to gas when being delivered to the appliance, the vapor liquid equilibrium would substantially reduce the amount of odorant blend in the vapor.
Tert - Butyl thiol has been listed on the European Food Safety Authority (FL-no: 12.174) as a flavor additive. There is no indication of what flavor or flavors it may have been used in. It has been removed from this list.

Preparation

tert-Butyl thiol likely does not occur naturally, but at least one publication has listed it as a very minor component of cooked potatoes. The compound was first prepared in 1890 by Leonard Dobbin by the reaction of zinc sulfide and t-butyl chloride.
The compound was later prepared in 1932 by the reaction of the Grignard reagent, t-BuMgCl, with sulfur to give the corresponding thiolate, followed by hydrolysis. This preparation is shown below:
t-BuMgCl + S → t-BuSMgCl
t-BuSMgCl + H2O → t-BuSH + Mg(OH)Cl
It is currently prepared industrially by the reaction of isobutylene with hydrogen sulfide over a clay (silica alumina) catalyst.

Reactions

tert-Butylthiol can react with metal alkoxides and acyl chlorides to form thiol esters, as shown in the equation :
In the reaction above, thallium (I) ethoxide converts to thallium (I) t-butyl thiolate. In the presence of diethyl ether, thallium (I) tbutylthiolate reacts with acyl chlorides to give the corresponding tertbutyl thioesters. Like other thio esters, it reverts back to tert-butylthiol by hydrolysis.
Lithium 2-methyl propane-2-thiolate can be prepared by treatment of tert-butyl thiol with lithium hydride in an aprotic solvent such as hexa methyl phosphorous triamide (HMPT). The resulting thiolate salt is a useful demethylating reagent. For example, treatment with 7- methyl guanosine gives guanosine. Other N-methylated nucleosides in tRNA are not demethylated by this reagent .

Hazard

Flammable, dangerous fire risk. Very toxic.

Safety Profile

Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. An eye irritant. A very dangerous fire hazard when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, use alcohol foam, dry chemical, mist, fog. When heated to decomposition or on contact with acid or acid fumes it emits highly toxic fumes of SOx.

Safety

Even in well ventilated areas, extreme caution must be made when handling tert-butylthiol as it is a highly odorous chemical with an odor threshold of < 0.33 ppb. Extreme caution is not due to toxicity, but due to the significant odor and concerns that this odor would cause to the many individuals that might be exposed. The PEL for thiols of most types is 500 ppb, primarily due to reaction of nausea at levels of 2–3 ppm. The LC50 of tert-butylthiol is much, much higher.

Purification Methods

Dry the thiol for several days over CaO, then distil it from CaO. Purify it as for 2-methylpropane-1-thiol above. [Beilstein 1 H 383, 1 II 416, 1 III 1589, 1 IV 1634.]

Metal complexes

The anion derived from tert – butyl thiol forms complexes with various metals. One example is tetra kis (tert-butyl thiolato ) molybdenum (IV), Mo(t-BuS)4. This complex was prepared by treating MoCl4 with t-BuSLi :
Mo Cl4 + 4t-Bu S Li → Mo (t-BuS)4 + 4LiCl
Mo(t-BuS)4 is a dark red diamagnetic complex that is sensitive to air and moisture. The molybdenum center has a distorted tetra hedral coordination to four sulfur atoms, with overall D2 symmetry.

2-Methyl-2-propanethiol Preparation Products And Raw materials

Raw materials

Preparation Products


2-Methyl-2-propanethiol Suppliers

Global( 117)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Hangzhou FandaChem Co.,Ltd.
008615858145714
+86-571-56059825 fandachem@gmail.com CHINA 8882 55
Win-Win Chemical CO., Limited
0086-577-64498589
0086-577-56994596 sales@win-winchemical.com CHINA 998 58
Hubei Jusheng Technology Co.,Ltd.
86-18871470254
027-59599243 linda@hubeijusheng.com CHINA 28229 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
HENAN BON INDUSTRIAL CO.,LTD
0371-55170695
info@hnbon.com CHINA 26742 58
CONIER CHEM AND PHARMA LIMITED
86-18523575427
sales@conier.com CHINA 47496 58
career henan chemical co
13203830695 0086-371-86658258
0086-371-86658258 factory@coreychem.com CHINA 29865 58
WinWin Chemical CO., Limited
15325081899 0086-577-64498589
0086-577-56994596 sales@win-winchemical.com CHINA 11910 58
ShenZhen Ipure Biology import and export company co.,ltd
18071025641 18071025641
eric@ipurechemical.com CHINA 11336 58
Dayang Chem (Hangzhou) Co.,Ltd.
17705817739 +86-571-88938639
+86-571-88938652,+86-571- 88492614 info@dycnchem.com CHINA 52932 58

View Lastest Price from 2-Methyl-2-propanethiol manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-07-02 2-Methyl-2-propanethiol
75-66-1
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2019-12-25 2-Methyl-2-propanethiol
75-66-1
US $1.00 / KG 1KG 99% G/KG/T Career Henan Chemical Co

2-Methyl-2-propanethiol Spectrum


75-66-1(2-Methyl-2-propanethiol)Related Search:


Copyright 2017 © ChemicalBook. All rights reserved