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/418/501/product-dating-information-06-25-mk.pdf
Fortfahren mit
320293
Dimethyl-sulfat
≥99%
Synonym(e):
Schwefelsäure-dimethylester
Größe auswählen
| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
1 L | Warenkorb auf Verfügbarkeit prüfen | € 99,90 |
Über diesen Artikel
vapor density
4.3 (vs air)
Quality Segment
vapor pressure
0.7 mmHg ( 25 °C)
assay
≥99%
form
liquid
autoignition temp.
923 °F
refractive index
n20/D 1.386 (lit.)
bp
188 °C (lit.)
mp
−32 °C (lit.)
density
1.333 g/mL at 25 °C (lit.)
SMILES string
COS(=O)(=O)OC
InChI
1S/C2H6O4S/c1-5-7(3,4)6-2/h1-2H3
InChI key
VAYGXNSJCAHWJZ-UHFFFAOYSA-N
Application
It can also be used as a reagent:
- For the preparation of quaternary ammonium acrylic monomer as a potent antibacterial agent by the quaternization of 2-dimethylamino ethyl methacrylate.
- Along with dimethyl sulfoxide for the synthesis of epoxides from aldehydes and ketones via formation of trimethylsulfonium cation.
- To prepare an oxygenate additive for diesel by the methylation of glycerol.
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| assay ≥99% | assay ≥99.5% | assay 98% | assay - |
| form liquid | form liquid | form liquid | form powder |
| vapor pressure 0.7 mmHg ( 25 °C) | vapor pressure 0.7 mmHg ( 25 °C) | vapor pressure <0.01 mmHg ( 20 °C), 2 mmHg ( 55 °C) | vapor pressure - |
| bp 188 °C (lit.) | bp 188 °C (lit.) | bp 208 °C (lit.) | bp - |
| refractive index n20/D 1.386 (lit.) | refractive index n20/D 1.386 (lit.) | refractive index n20/D 1.399 (lit.) | refractive index - |
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signalword
Danger
Hazard Classifications
Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Carc. 1B - Eye Dam. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1
Lagerklasse
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
flash_point_f
181.4 °F - closed cup
flash_point_c
83 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Zulassungslistungen
Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.
77-78-1
77-78-1
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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