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320536

Sigma-Aldrich

Thionyl chloride

reagent grade, 97%

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About This Item

Linear Formula:
SOCl2
CAS Number:
7719-09-7
Molecular Weight:
118.97
Beilstein:
1209273
EC Number:
231-748-8
MDL number:
MFCD00011449
UNSPSC Code:
12352300
PubChem Substance ID:
24859269
NACRES:
NA.21

grade

reagent grade

Quality Level

100

vapor pressure

97 mmHg ( 20 °C)

Assay

97%

form

liquid

refractive index

n20/D 1.518 (lit.)

bp

79 °C (lit.)

mp

−105 °C (lit.)

density

1.631 g/mL at 25 °C (lit.)

SMILES string

ClS(Cl)=O

InChI

1S/Cl2OS/c1-4(2)3

InChI key

FYSNRJHAOHDILO-UHFFFAOYSA-N

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General description

Thionyl chloride is an inorganic acid chloride mainly used as a reagent to prepare carboxylic acid chlorides from carboxylic acids.

Application

Thionyl chloride may be used in the following processes:
  • To facilitate the synthesis of indenones from 3-hydroxyindanones via dehydroxylation.
  • To functionalize silica gel for thioacetalization of aldehydes.
  • Conversion of tert-butyl esters to acid chlorides.
  • Conversion of aliphatic and aromatic sulfoxides to sulfides in the presence of triphenylphosphine.

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H302,H314,H331,H335

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3

Target Organs

Respiratory system

Supplementary Hazards

EUH014,EUH029

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SHBR4524
STBL1084
STBL2694
STBK6389
SHBP5852

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Organic Chemistry, 607-607 null
The Conversion of tert-Butyl Esters to Acid Chlorides Using Thionyl Chloride.
Greenberg JA & Sammakia T
The Journal of Organic Chemistry, 82(6), 3245-3251 (2017)
Deoxygenation of sulfoxides to sulfides with thionyl chloride and triphenylphosphine: Competition with the Pummerer reaction
Jang Y, et al.
The Journal of Organic Chemistry, 78(12), 6328-6331 (2013)
Selective protection of carbonyl compounds. Silica gel treated with thionyl chloride as an effective catalyst for thioacetalization.
Kamitori Y, et al.
The Journal of Organic Chemistry, 51(9), 1427-1431 (1986)
Eagleson M.
Concise Encyclopedia Chemistry, 118-118 (1994)
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