Diethyl sulfite

Structural formula
General
Surname	Diethyl sulfite
other names	OF Ethyl sulfite
Molecular formula	(C 2 H 5 O) 2 SO
Brief description	colorless liquid
External identifiers / databases
CAS number 623-81-4 EC number 210-815-5 ECHA InfoCard 100.009.832 PubChem 12197 Wikidata Q1936824
properties
Molar mass	138.19 g mol −1
Physical state	liquid
density	1.077 g cm −3 (25 ° C)
boiling point	158-160 ° C
solubility	soluble in ethanol
Refractive index	1.414 (20 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 226-315-319-335 P: 261-305 + 351 + 338
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Diethyl sulfite is a chemical compound from the group of esters of sulfurous acid .

Extraction and presentation

Diethyl sulfite can be obtained by reacting thionyl chloride with ethanol .

${\displaystyle \mathrm {SOCl_{2}+2\ C_{2}H_{5}OH\longrightarrow SO(OC_{2}H_{5})_{2}+2\ HCl} }$

properties

Diethyl sulfite is a colorless liquid that is soluble in ethanol.

use

Diethyl sulfite is used as an antioxidant in some polymers .

Individual evidence

1. ↑ ^{a b c d e f g h} data sheet Diethyl sulfite, 98% from Sigma-Aldrich , accessed on January 24, 2016 ( PDF ).
2. ^ ^{A b} William M. Haynes: CRC Handbook of Chemistry and Physics, 96th Edition . tape 3 . CRC Press, 2015, ISBN 978-1-4822-6097-7 , pp. 180 ( limited preview in Google Book Search).
3. ^ A. Günther, T. König, WD Habicher, K. Schwetlick: Antioxidant action of organic sulphites — I. Esters of sulfurous acid as secondary antioxidants. In: Polymer Degradation and Stability. 55, 1997, p. 209, doi : 10.1016 / S0141-3910 (96) 00150-4 .