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Merck
CN

360570

Pyridine

ACS reagent, ≥99.0%

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About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
UNSPSC Code:
12352005
NACRES:
NA.07
PubChem Substance ID:
329755266
EC Number:
203-809-9
Beilstein/REAXYS Number:
103233
MDL number:
MFCD00011732
Grade:
ACS reagent
Assay:
≥99.0%
Bp:
115 °C (lit.)
Vapor pressure:
10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

Key Documents

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Product Name

Pyridine, ACS reagent, ≥99.0%

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

InChI

1S/C5H5N/c1-2-4-6-5-3-1/h1-5H

SMILES string

C1=CN=CC=C1

grade

ACS reagent

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

assay

≥99.0%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

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)

bp

115 °C (lit.)

mp

−42 °C (lit.)

solubility

water: soluble

density

0.978 g/mL at 25 °C (lit.)

anion traces

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

cation traces

Cu: ≤5 ppm

Quality Level

200

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Application

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

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, pyridine alkaloids, pyridine-based polymers and pyridine-containing macrocycles. It has wide application as a solvent, catalyst and as an intermediate for synthesis. IR, Raman and UV spectra of pyridine has been analyzed and the values obtained were used to calculate its thermodynamic properties. Photodegradation and bacterial degradation of Pyr has been studied.

Packaging

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pictograms

FlameExclamation mark
GHS02,GHS07

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SHBT4892
SHBT3923
SHBT3398
SHBT3250
SDBB4742

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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)
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)
Bacterial degradation of pyridine, indole, quinoline, and their derivatives under different redox conditions.
Fetzner, S.
Applied Microbiology and Biotechnology, 49(3), 237-250 (1998)
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)
Pyridine coenzymes of subcellular tissue fractions.
Jacobson KB and Kaplan NO.
The Journal of Biological Chemistry, 226(2), 603-613 (1957)
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