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
B85307
2,3-Butanedione
97%
Promotion Available
Synonym(s):
Biacetyl, Diacetyl
Spend $500 — Save 5%; Spend $800 — Save 10%; Spend $1,600 — Save 22%*
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Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Available to ship TODAYfromMILWAUKEE | $60.60 |
100 mL | Available to ship TODAYfromMILWAUKEE | $117.00 $99.45 |
500 mL | Available to ship TODAYfromMILWAUKEE | $185.00 |
About This Item
vapor density
3 (vs air)
Quality Segment
vapor pressure
52.2 mmHg ( 20 °C)
assay
97%
form
liquid
autoignition temp.
345 °C
refractive index
n20/D 1.394 (lit.)
bp
88 °C (lit.)
density
0.981 g/mL (lit.)
functional group
ketone
storage temp.
2-8°C
SMILES string
CC(=O)C(C)=O
InChI
1S/C4H6O2/c1-3(5)4(2)6/h1-2H3
InChI key
QSJXEFYPDANLFS-UHFFFAOYSA-N
Gene Information
human ... ACHE(43), BCHE(590), CES1(1066)
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signalword
Danger
target_organs
Respiratory system
Storage Class
3 - Flammable liquids
flash_point_f
44.6 °F - closed cup
flash_point_c
7 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, Heavyweight Gloves, Safety Clothing, type ABEK (EN14387) respirator filter
hcodes
Hazard Classifications
Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Flam. Liq. 2 - Skin Irrit. 2 - STOT RE 1 Inhalation
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How can I determine the shelf life / expiration / retest date of this product?
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I need a food grade version of diacetyl. Is this version food grade?
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The product is not food grade. A food grade version of this product is not currently supplied.
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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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