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
360473
2-Butanone
ACS reagent, ≥99.0%
Synonym(s):
Ethyl methyl ketone, MEK, Methyl ethyl ketone
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About This Item
Recommended Products
grade
ACS reagent
Quality Level
vapor density
2.49 (vs air)
vapor pressure
71 mmHg ( 20 °C)
Assay
≥99.0%
form
liquid
autoignition temp.
960 °F
expl. lim.
10.1 %
impurities
≤0.0005 meq/g Titr. acid
≤0.20% water
evapn. residue
≤0.0025%
color
APHA: ≤15
refractive index
n20/D 1.379 (lit.)
bp
80 °C (lit.)
mp
−87 °C (lit.)
density
0.805 g/mL at 25 °C (lit.)
SMILES string
CC(CC)=O
InChI
1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
InChI key
ZWEHNKRNPOVVGH-UHFFFAOYSA-N
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General description
Application
- To synthesize waterborne polyurethanes by reacting polyols and diisocyanates via polymerization reaction.
- In the Al-catalyzed chemoselective coupling of oxetanes and carbon dioxide to synthesize six-membered cyclic carbonates.
Features and Benefits
- Low-boiling solvent
- High power of dissolution
- High ratio of dissolved matter to viscosity
- Miscible with a wide range of hydrocarbonswithout affecting the solid′s content or viscosity
- Favorable volume/mass ratio due to its low density
- Fast evaporation rate
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
Target Organs
Central nervous system
Supplementary Hazards
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
30.2 °F - closed cup
Flash Point(C)
-1 °C - closed cup
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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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