Skip to Content
Merck
CN
All Photos(1)

Documents

Safety Information

88950

Sigma-Aldrich

Thionyl chloride

puriss., ≥99.0%

Sign Into View Organizational & Contract Pricing
All Photos(1)
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:
329769678

vapor pressure

97 mmHg ( 20 °C)

grade

puriss.

Assay

≥99.0%

form

liquid

color

APHA: ≤50

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

Looking for similar products? Visit Product Comparison Guide

General description

Thionyl chloride is a sulfur containing acid halide. It participates in the preparation of butadiyne (diacetylene). On reaction with benzaldehyde, it affords benzylidene dichloride. It is widely employed for the transformation of alcohols into reactive alkyl chlorides.

Application

Thionyl chloride may be employed for the sulfonation of aromatic compounds. It may be used in the synthesis of following:
  • cyclooctasulfur oxide
  • disulfuroxide
  • acetylchloride
  • organochlorine compounds
  • G-series nerve agents such as phosgene or chloropicrine
  • 1-(chloromethyl)-3,5-dimethylbenzene

replaced by

Product No.
Description
Pricing

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

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

监管及禁止进口产品

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Eagleson M.
Concise Encyclopedia Chemistry, 1056-1056 (1994)
Eagleson M.
Concise Encyclopedia Chemistry, 118-118 (1994)
High-resolution synchrotron far infrared spectroscopy of thionyl chloride: Analysis of the ?3 and ?6 fundamental bands.
Martin-Drumel MA, et al.
Journal of Molecular Spectroscopy (2015)
Jinjian Zheng et al.
Analytica chimica acta, 891, 255-260 (2015-09-22)
Thionyl chloride is often used to convert alcohols into more reactive alkyl chloride, which can be easily converted to many compounds that are not possible from alcohols directly. One important reaction of alkyl chloride is nucleophilic substitution, which is typically
Eagleson M.
Concise Encyclopedia Chemistry, 1049-1049 (1994)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service