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
270970
Pyridine
anhydrous, 99.8%
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About This Item
20 mmHg ( 25 °C)
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Product Name
Pyridine, anhydrous, 99.8%
InChI key
JUJWROOIHBZHMG-UHFFFAOYSA-N
InChI
1S/C5H5N/c1-2-4-6-5-3-1/h1-5H
SMILES string
C1=CN=CC=C1
grade
anhydrous
vapor density
2.72 (vs air)
vapor pressure
10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)
assay
99.8%
form
liquid
autoignition temp.
899 °F
expl. lim.
12.4 %
impurities
<0.003% water
<0.005% water (100 mL pkg)
evapn. residue
<0.0005%
color
colorless
refractive index
n20/D 1.509 (lit.)
pH
~8.81 (20 °C)
bp
115 °C (lit.)
mp
−42 °C (lit.)
density
0.978 g/mL at 25 °C (lit.)
Quality Level
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Related Categories
1 of 4
This Item | 5.89579 | P57506 | 360570 |
|---|---|---|---|
| assay 99.8% | assay 99.8% | assay ≥99% | assay ≥99.0% |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| grade anhydrous | grade anhydrous | grade - | grade ACS reagent |
| form liquid | form - | form liquid | form liquid |
| vapor density 2.72 (vs air) | vapor density 2.72 (vs air) | vapor density 2.72 (vs air) | vapor density 2.72 (vs air) |
| vapor pressure 10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C) | vapor pressure 10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C) | vapor pressure 10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C) | vapor pressure 10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C) |
Application
- Alkyltrichlorosilanes to trimethoxyalkylsilanes, which are used as precursors for preparing alkylsilicates.[4]
- 1-Indanone to 1-indanone oxime, which can undergo reductive ring-expansion to form tetrahydroquinoline.[5]
It may also be used to catalyze the borylation reaction of haloarenes to form arylboronates without using transition metal catalysts.[6]
General description
Packaging
related product
signalword
Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2
Storage Class
3 - Flammable liquids
wgk
WGK 2
flash_point_f
68.0 °F - closed cup
flash_point_c
20 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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Effective in key synthesis reactions like Knoevenagel condensation, thalidomide synthesis, and Suzuki coupling for sustainable chemical transformations.
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How can I determine the shelf life / expiration / retest date of this product?
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Is this compound derived from plants?
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This product is typically synthetically manufactured and not plant-derived. However, the origin may vary on a lot-to-lot basis. More information may be found in the lot-specific Certificate of Origin. Please navigate to the ‘DOCUMENTATION’ section of the Product Detail Page to access a Certificate under the ‘Certificate of Origin’ tab:
https://www.sigmaaldrich.com/product/sial/270970#product-documentationHelpful?
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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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