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109207

Sigma-Aldrich

2-Methyl-2-propanethiol

99%

Synonym(s):

tert-Butyl mercaptan, TBM

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About This Item

Linear Formula:
(CH3)3CSH
CAS Number:
75-66-1
Molecular Weight:
90.19
Beilstein:
505947
EC Number:
200-890-2
MDL number:
MFCD00004857
UNSPSC Code:
12352100
PubChem Substance ID:
24846894
NACRES:
NA.22

vapor density

3.1 (vs air)

Quality Level

100

vapor pressure

303.5 mmHg ( 37.7 °C)

Assay

99%

refractive index

n20/D 1.423 (lit.)

bp

62-65 °C (lit.)

mp

-0.5 °C (lit.)

solubility

H2O: slightly soluble
alcohol: very soluble
diethyl ether: very soluble

density

0.8 g/mL at 25 °C (lit.)

SMILES string

CC(C)(C)S

InChI

1S/C4H10S/c1-4(2,3)5/h5H,1-3H3

InChI key

WMXCDAVJEZZYLT-UHFFFAOYSA-N

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General description

2-Methyl-2-propanethiol undergoes ring opening nucleophilic reaction with 3-isothiazolones and reaction kinetics studies suggested reaction was second order in thiol and third order overall.

Application

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.

Signal Word

Danger

Hazard Statements

H225,H317,H411

Hazard Classifications

Aquatic Chronic 2 - Flam. Liq. 2 - Skin Sens. 1B

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

<-13.0 °F - closed cup

Flash Point(C)

< -25 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Probing the kinetics for thiol desulfurization: the reactions of 2-methyl-2-propanethiol on molybdenum (110).
Wiegand BC, et al.
The Journal of Physical Chemistry, 96(11), 4527-4533 (1992)
Christian Ledig et al.
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