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MilliporeSigma

360570

Pyridine

ACS reagent, ≥99.0%

Pyridine
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100 ML

$144.00

500 ML

$193.00

1 L

$285.00

2.5 L

$455.00

360570-4L-AB

$615.00

18 L

$2,030.00

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$2,080.00

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About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
UNSPSC Code:
12352005
NACRES:
NA.07
PubChem Substance ID:
EC Number:
203-809-9
Beilstein/REAXYS Number:
103233
MDL number:
Assay:
≥99.0%
Grade:
ACS reagent
Vapor pressure:
10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)

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grade

ACS reagent

Quality Level

vapor pressure

10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)

assay

≥99.0%

form

liquid

autoignition temp.

899 °F

dilution

(for analytical testing)

impurities

Reducing substances, passes test, ≤0.002% NH3, 0.1% water

evapn. residue

≤0.002%

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

mp

−42 °C (lit.)

solubility

water: soluble

anion traces

chloride (Cl-): ≤0.001%, sulfate (SO42-): ≤0.001%

cation traces

Cu: ≤5 ppm

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This Item
67677233553P57506
grade

ACS reagent

grade

ACS reagent

grade

ACS reagent, puriss. p.a.

grade

-

assay

≥99.0%

assay

≥99.0%

assay

≥99.5% (GC)

assay

≥99%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

solubility

water: soluble

solubility

water: soluble

solubility

H2O: in accordance

solubility

-

form

liquid

form

liquid

form

liquid

form

liquid

mp

−42 °C (lit.)

mp

−42 °C (lit.)

mp

−42 °C (lit.)

mp

−42 °C (lit.)

General description

Our premium ACS solvents are ideal for routine chemical synthesis, drying, purification, and critical labware cleaning. They meet or exceed the rigorous standards of the American Chemical Society (ACS), ensuring high-quality results for your research needs.

Premium ACS Solvents: Our solvents meet or exceed the stringent standards set by the American Chemical Society, ensuring high quality and reliability for your laboratory applications.

Replicable and Publishable Results: Designed for consistency, our solvents deliver results that can be reliably reproduced, making them ideal for research that requires publication.

Versatile Applications: Suitable for routine chemical synthesis, drying, purification, and critical labware cleaning, our solvents cater to a wide range of research needs in the laboratory.
Pyridine (Pyr) is a nitrogen containing six membered heterocyclic compound commonly used as a base. It is a colorless liquid with a fishy odor. Pyridine moiety is present as a major component in a number of compounds like pyridine nucleotides,[1] pyridine alkaloids,[2] pyridine-based polymers[3] and pyridine-containing macrocycles.[4] It has wide application as a solvent, catalyst and as an intermediate for synthesis.[5] IR, Raman and UV spectra of pyridine has been analyzed and the values obtained were used to calculate its thermodynamic properties.[6] Photodegradation[7] and bacterial degradation of Pyr has been studied.[8]

Application

Pyridine may be used in the synthesis of the following:
  • complexes with cobalt(II) halides[9]
  • pyridine-d5, a deuterated form of pyridine[10]
  • ionic liquid matrices (ILMs)[11]

pictograms

FlameExclamation mark

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


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Cyclostellettamines AF, pyridine alkaloids which inhibit binding of methyl quinuclidinyl benzilate (QNB) to muscarinic acetylcholine receptors, from the marine sponge, Stelletta maxima.
Fusetani N, et al.
Tetrahedron Letters, 35(23), 3967-3970 (1994)
The vibrational spectrum of pyridine and the thermodynamic properties of pyridine vapors.
Kline Jr CH and Turkevich J.
J. Chem. Phys. , 12(7), 300-309 (1944)
The thermal decomposition of metal complexes-III: The decomposition of some pyridine and substituted-pyridine complexes of cobalt (II) halides.
Allan JR, et al.
J. Inorg. Nucl. Chem., 26(11), 1895-1902 (1964)
Bacterial degradation of pyridine, indole, quinoline, and their derivatives under different redox conditions.
Fetzner, S.
Applied Microbiology and Biotechnology, 49(3), 237-250 (1998)
Absorption and luminescence of pyridine-based polymers.
Jessen SW, et al.
Synthetic Metals, 84(1), 501-506 (1997)

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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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