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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.

signalword

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

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

140.0 °F - closed cup

flash_point_c

60 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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’.

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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
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
Yiqiang Zhang et al.
Journal of environmental quality, 31(4), 1124-1128 (2002-08-15)
Volatilization of dimethyldiselenide (DMDSe) is one of the most important processes for removing selenium (Se) from Se-contaminated environments. However, the fate of DMDSe in soil is not known. In this study, we monitored the changes of DMDSe in the head
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
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