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
D106208
3,4-Dihydro-2H-pyran
97%
Synonym(s):
2,3,4-Trihydropyran, 2H-3,4-Dihydropyran, Dihydro-2H-pyran, Dihydropyran
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About This Item
Recommended Products
vapor density
2.9 (vs air)
Quality Level
Assay
97%
form
liquid
refractive index
n20/D 1.440 (lit.)
bp
86 °C (lit.)
mp
−70 °C (lit.)
density
0.922 g/mL at 25 °C (lit.)
SMILES string
C1COC=CC1
InChI
1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2
InChI key
BUDQDWGNQVEFAC-UHFFFAOYSA-N
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Application
- Tetrahydropyranylated product from alcohols in the presence of phenolsulfonic acid-formaldehyde resin catalyst[1].
- Tetrahydropyran derivatives by reacting pyrazoles in the presence of trifluoroacetic acid[2].
- 1,2,3,4-Tetrahydroquinoline derivatives by cation-exchange resin catalyzed Domino reaction with aromatic amines[3].
- Tetrahydroquinolines from aryl azides in the presence of FeCl3-NaI[4].
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1B
Supplementary Hazards
Storage Class Code
3 - Flammable liquids
WGK
WGK 1
Flash Point(F)
5.0 °F - closed cup
Flash Point(C)
-15 °C - closed cup
Personal Protective Equipment
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
FSL
Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water insoluble liquid
ISHL Indicated Name
Substances Subject to be Indicated Names
ISHL Notified Names
Substances Subject to be Notified Names
JAN Code
D106208-100ML:
D106208-BULK:
D106208-VAR:
D106208-10L:
D106208-5ML:
D106208-5KG:
D106208-500ML:
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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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