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Diethyl disulfide

Diethyl disulfide structure

CAS No:
110-81-6
Formula:
C4H10S2
Chemical Name:
Diethyl disulfide
Synonyms:
Disulfide,diethyl;Ethyl disulfide;Diethyl disulfide;3,4-Dithiahexane;Ethyldithioethane;Ethyl disulphide;NSC 8839;Diethyl dithioether;1,2-Diethyldisulfane;(Ethyldisulfanyl)ethane
Categories:
Flavors and Fragrances > Synthetic Fragrances

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Description

Liquid

Liquid|Colourless to yellowish liquid; Onion/cabbage odour

Diethyl disulfide is an organic disulfide.

Diethyl disulfide Basic Attributes

Molecular Weight：

122.25

Exact Mass：

122.25

BRN：

1098273

EC Number：

205-710-6

UNII：

X2SFL51MH0

NSC Number：

8839

DSSTox ID：

DTXSID3051464

HScode：

2930909090

Characteristics

PSA：

50.6

XLogP3：

2.83

Appearance：

Liquid

Density：

0.8363 g/cm³ @ Temp: 20 °C

Melting Point：

-101.5 °C

Boiling Point：

154.1 °C

Flash Point：

104 °F

Refractive Index：

1.509

Water Solubility：

soluble in water.

Storage Conditions：

−20°C

Vapor Pressure：

4.28 mmHg

Vapor Density：

5.9 (vs air)

Henrys Law Constant：

0.00 atm-m3/mole

Safety Information

Packing level：

III

Hazard category：

Transport codes：

UN 1993 3/PG 3

wgk germany：

hazard class code：

22-38-41-36/37/38-10

safety instructions：

26-39-37/39-16-36

RTECS Number：

JO1925000

Marks：

Xn,Xi

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P210-P305 + P351 + P338-P370 + P378

Hazard Statements：

H226-H315-H319

GHS Classification：

|Warning|H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 161 companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H226: Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501

Diethyl disulfide Use and Manufacturing

Methods of Manufacturing

The preparation method is to first put sodium sulfide solution in the reaction kettle, add sulfur powder according to sodium sulfide: sulfur=1:1 (molar ratio), heat up the jacket, and keep it warm when the temperature reaches 80-95℃ under stirring. Serve the disodium disulfide (Na2S2) solution in 1h, then pump the disodium disulfide solution into the alkylation kettle and start stirring. When the reaction kettle is vacuumed to (2～3.3)×104Pa, close the vacuum valve and start to pass in ethyl chloride. , The reaction temperature is controlled at 75～90℃, the pressure is controlled at (1.17～1.18)×105Pa, the feed ratio (molar ratio) is disodium disulfide: ethyl chloride = 1:2, after the ethyl chloride is passed, the material After cooling to below 50°C, the feed oil is pumped to the water separator to stand for stratification, and the upper oil layer is the finished product. 2C2H5Cl+Na2S+S→C2H2—S—S—C2H5+2NaCl

Uses

Used as an intermediate in organic synthesis

Fuels and fuel additives

Inorganic Chemical Manufacturing

Production

100,000 - 500,000 lb

Manufacturing Info：

Petrochemical manufacturing|Disulfide, diethyl: ACTIVE|Disulfides, C2-6-alkyl: INACTIVE

Use Classification：

Food additives -> Flavoring Agents|Flavoring Agents -> JECFA Flavorings Index

Food Additive Classes：

Flavoring Agents

Computed Properties

Molecular Weight:122.3
XLogP3:1.6
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:3
Exact Mass:122.02239267
Monoisotopic Mass:122.02239267
Topological Polar Surface Area:50.6
Heavy Atom Count:6
Complexity:17.5
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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Guide of Diethyl disulfide

Description
Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Recommended Suppliers
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Diethyl disulfide

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