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Sigma-Aldrich

Dimethyl diselenide

96%

Synonym(s):

Methyl diselenide

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About This Item

Linear Formula:
(CH3)2Se2
CAS Number:
7101-31-7
Molecular Weight:
187.99
EC Number:
230-410-7
MDL number:
MFCD00008254
UNSPSC Code:
12352100
PubChem Substance ID:
24859379
NACRES:
NA.22

Assay

96%

form

liquid

refractive index

n20/D 1.6388 (lit.)

bp

155-157 °C (lit.)

density

1.987 g/mL at 25 °C (lit.)

SMILES string

C[Se][Se]C

InChI

1S/C2H6Se2/c1-3-4-2/h1-2H3

InChI key

VLXBWPOEOIIREY-UHFFFAOYSA-N

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General description

Dimethyl diselenide is a volatile selenium species and its determination in biological samples by HPLC-inductively coupled argon plasma mass spectrometry was reported. Selenium alkylation with dimethyl diselenide was reported by solid-phase microextraction gas chromatography-mass spectrometry.

Application

Dimethyl diselenide is the most powerful reagent used to identify distonic radical cations.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - STOT RE 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

140.0 °F - closed cup

Flash Point(C)

60 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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K K Thoen et al.
Journal of the American Society for Mass Spectrometry, 7(12), 1245-1250 (1996-12-01)
Dimethyl diselenide is demonstrated to be among the most powerful reagents used to identify distonic radical cations. Most such ions readily abstract CH3Se from dimethyl diselenide. The reaction is faster and more exclusive than CH3S(·) abstraction from dimethyl disulfide, a
Markus Lenz et al.
Environmental science & technology, 45(3), 1067-1073 (2010-12-25)
In this study we evaluate the potential of anaerobic granular sludge as an inoculum for the bioremediation of selenium-contaminated waters using species-specific analytical methods. Solid species formed by microbial reduction were investigated using X-ray absorption near-edge structure (XANES) spectroscopy at
J E Spallholz et al.
Nutrition and cancer, 40(1), 34-41 (2002-01-22)
The reduction of cancer incidence by dietary supplementation with L-selenomethionine, L-Se-methylselenocysteine, and other methylated selenium compounds and metabolites is believed to be due to the metabolic generation of the monomethylated selenium species methylselenol. Dimethyldiselenide and methylseleninic acid were reduced by
Elimination of selenium compounds by mice through formation of different volatile selenides.
S Jiang et al.
Experientia, 39(3), 293-294 (1983-03-15)
William J Hunter et al.
Journal of chromatography. A, 1038(1-2), 295-297 (2004-07-06)
A simple method for the determination of volatile selenium compounds employing a gas chromatograph equipped with a photoionization detector is described. The method involves the direct injection of dimethylselenide (DMS) or dimethyldiselenide (DMDS) into the gas chromatograph; no derivatization of
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