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471569

Sigma-Aldrich

Dimethyl disulfide

≥99.0%

Sinonimo/i:

DMDS, Methyl disulfide

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About This Item

Formula condensata:
CH3SSCH3
Numero CAS:
624-92-0
Peso molecolare:
94.20
Beilstein:
1730824
Numero CE:
210-871-0
Numero MDL:
MFCD00008561
Codice UNSPSC:
12352100
ID PubChem:
24870743
NACRES:
NA.22
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Densità del vapore

3.24 (vs air)

Livello qualitativo

100

Tensione di vapore

22 mmHg ( 20 °C)

Saggio

≥99.0%

Temp. autoaccensione

>572 °F

Limite di esplosione

16 %

Indice di rifrazione

n20/D 1.525 (lit.)

P. ebollizione

109 °C (lit.)

Punto di fusione

−85 °C (lit.)

Densità

1.046 g/mL at 25 °C (lit.)

Gruppo funzionale

disulfide

Stringa SMILE

CSSC

InChI

1S/C2H6S2/c1-3-4-2/h1-2H3
WQOXQRCZOLPYPM-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

Dimethyl disulfide (DMDS) is an organic dialkyl disulfide. It is one of the odorous compounds found on the working face of typical municipal solid waste landfill in China.[1] DMDS forms adducts with mono-unsaturated acetates by addition across carbon-carbon double bonds. These adducts are useful to locate the of double bonds in long-chain mono-unsaturated acetates.[2] Adsorption of DMDS on Au(111) surface has been investigated by the density functional theory (DFT) within a generalized gradient approximation and experimental high-resolution electron energy loss spectroscopy (HREELS) techniques.[3]

Applicazioni

Dimethyl disulfide (DMDS) may be used to derivatize alkenes for the determination of position of double bond by MS.[2] It may also be used to determine the location of the double-bond position of monounsaturated fatty acids in Campylobacter cryaerophila by combined GC-MS analysis.[4]

Note legali

Product of Arkema Inc.

Avvertenze

Danger

Classi di pericolo

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Sens. 1 - STOT SE 1 Inhalation - STOT SE 3

Organi bersaglio

Central nervous system, Upper respiratory tract

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

59.0 °F - closed cup

Punto d’infiammabilità (°C)

15 °C - closed cup

Dispositivi di protezione individuale

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

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Certificati d'analisi (COA)

Lot/Batch Number
SHBS4274
STBL3633
STBL1784
STBL0903
STBK7594

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Sigma-Aldrich

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Sigma-Aldrich

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Sigma-Aldrich

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Sigma-Aldrich

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Adsorption state of dimethyl disulfide on Au?111?: Evidence for adsorption
as thiolate at the bridge site
Hayashi T, et al.
J. Chem. Phys. , 114(17), 7615-7621 (2001)
C W Moss et al.
Journal of clinical microbiology, 27(7), 1467-1470 (1989-07-01)
Location of the double-bond position of monounsaturated fatty acids in Campylobacter cryaerophila was accomplished with combined gas chromatography-mass spectrometry analysis of dimethyl disulfide (DMDS) derivatives. The monoenoic fatty acids from whole bacterial cells were converted to methyl esters and then
Lu Wenjing et al.
Waste management (New York, N.Y.), 42, 74-81 (2015-05-23)
Temporal variation (seasonal and daily) of odor emission on the working face of a large sanitary landfill in China was characterized through a 2 yearlong case study. Odor pollution was most serious in spring and autumn, while lower odor concentrations
Determination of double bond position in mono-unsaturated acetates by mass spectrometry of dimethyl disulfide adducts.
Buser HR, et al.
Analytical Chemistry, 55(6), 818-822 (1983)
P Jäppinen et al.
Archives of toxicology, 67(2), 104-106 (1993-01-01)
Dimethyl sulfide in breath was determined by the gas chromatographic method in 14 persons exposed to organic reduced sulfur compounds in sulfate pulp mills. Dimethyl sulfide concentrations in breath (range 0.04-0.69 cm3/m3 were compared to the combined workplace concentrations of
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Protocolli

GC Analysis of Pyrazines in Peanut Butter

Separation of various pyrazines and sulfur compounds including carbon disulfide and dimethyl disulfide.

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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