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
D186309
Dimethyl sulfate
≥99.5%, liquid
Synonym(s):
Sulfuric acid dimethyl ester
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About This Item
Product Name
Dimethyl sulfate, ≥99.5%
vapor density
4.3 (vs air)
Quality Segment
vapor pressure
0.7 mmHg ( 25 °C)
assay
≥99.5%
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
Packaging
18 L in Kilo-Lab® packaging not available in all areas.
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥99.5% | assay ≥99% | assay 98% | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| refractive index n20/D 1.386 (lit.) | refractive index n20/D 1.386 (lit.) | refractive index n20/D 1.399 (lit.) | refractive index - |
| form liquid | form liquid | form liquid | form powder |
| density 1.333 g/mL at 25 °C (lit.) | density 1.333 g/mL at 25 °C (lit.) | density 1.177 g/mL at 25 °C (lit.) | density - |
| bp 188 °C (lit.) | bp 188 °C (lit.) | bp 208 °C (lit.) | bp - |
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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
Storage Class
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
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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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