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
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242845
Essigsäureanhydrid
ACS reagent grade, ≥98.0%, liquid
Synonym(e):
Acetanhydride, Acetic acid anhydride, Acetyl acetate, Acetyl anhydride, Ethanoic anhydride
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Über diesen Artikel
Produktname
Essigsäureanhydrid, ACS reagent, ≥98.0%
grade
ACS reagent
Quality Segment
vapor density
3.5 (vs air)
vapor pressure
10 mmHg ( 36 °C), 4 mmHg ( 20 °C)
assay
≥98.0%
form
liquid
autoignition temp.
629 °F
expl. lim.
10.3 %
impurities
MnO4- reducers, passes test
evapn. residue
≤0.003%
refractive index
n20/D 1.390 (lit.)
bp
138-140 °C (lit.)
mp
−73 °C (lit.)
solubility
H2O: slightly soluble
density
1.08 g/mL (lit.)
anion traces
chloride (Cl-): ≤5 ppm, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤5 ppm
cation traces
Fe: ≤5 ppm, heavy metals: ≤2 ppm
application(s)
cannabis testing
functional group
anhydride, ester
SMILES string
CC(=O)OC(C)=O
InChI
1S/C4H6O3/c1-3(5)7-4(2)6/h1-2H3
InChI key
WFDIJRYMOXRFFG-UHFFFAOYSA-N
General description
Application
It may be used for acetylation of anisole over HBEA zeolite in a batch reactor.
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Signalwort
Danger
Gefahrencodes
Hazard Classifications
Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B
Lagerklasse
3 - Flammable liquids
Flammpunkt (°F)
120.2 °F - closed cup
Flammpunkt (°C)
49 °C - closed cup
PSA (Persönliche Schutzausrüstung)
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.
108-24-7
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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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