Merck
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W296600

Sigma-Aldrich

Pyridine

≥99%

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Synonym(s):
Aza benzene, Azine
Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
FEMA Number:
2966
Beilstein:
103233
EC Number:
203-809-9
Council of Europe no.:
604
MDL number:
MFCD00011732
PubChem Substance ID:
24901424
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines

reg. compliance

EU Regulation 1223/2009

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

Assay

≥99%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

packaging

composite drum of 25 kg
glass bottle of 1 kg
steel drum of 10 kg

impurities

≤0.50% (water)

color

colorless

refractive index

n20/D 1.509 (lit.)

pH

8.5 (25 °C, 15.82 g/L)

bp

115 °C (lit.)

mp

−42 °C (lit.)

density

0.978 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

fishy; sour

SMILES string

C1=CN=CC=C1

InChI

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

Inchi Key

JUJWROOIHBZHMG-UHFFFAOYSA-N

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1 of 4

This Item
2709705.89579270407
Pyridine ≥99%

Sigma-Aldrich

W296600

Pyridine

Pyridine anhydrous, 99.8%

Sigma-Aldrich

270970

Pyridine

Pyridine anhydrous, 99.8%

Sigma-Aldrich

5.89579

Pyridine

Pyridine suitable for HPLC, ≥99.9%

Sigma-Aldrich

270407

Pyridine

grade

Fragrance grade, Halal, Kosher

grade

anhydrous

grade

anhydrous

grade

-

agency

follows IFRA guidelines

agency

-

agency

-

agency

-

vapor density

2.72 (vs air)

vapor density

2.72 (vs air)

vapor density

2.72 (vs air)

vapor density

2.72 (vs air)

assay

≥99%

assay

99.8%

assay

99.8%

assay

≥99.9%

refractive index

n20/D 1.509 (lit.)

refractive index

n20/D 1.509 (lit.)

refractive index

n20/D 1.509 (lit.)

refractive index

n20/D 1.509 (lit.)

Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

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 Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Total syntheses of complanadines A and B.
Le Zhao et al.
Angewandte Chemie (International ed. in English), 52(6), 1722-1725 (2013-01-03)
Bobby Happ et al.
Chemical Society reviews, 41(6), 2222-2255 (2011-11-15)
Pyridine-based ligands, such as 2,2'-bipyridine and 1,10-phenanthroline, have gained much interest in the fields of supramolecular chemistry as well as materials science. The appealing optoelectronic properties of their complexes with heavy d(6) transition metal ions, such as Ru(ii), Os(II), Re(I)
Nathalie Ségaud et al.
Inorganic chemistry, 52(2), 691-700 (2013-01-11)
We report the synthesis, characterization, and solution chemistry of a series of new Fe(II) complexes based on the tetradentate ligand N-methyl-N,N'-bis(2-pyridyl-methyl)-1,2-diaminoethane or the pentadentate ones N,N',N'-tris(2-pyridyl-methyl)-1,2-diaminoethane and N,N',N'-tris(2-pyridyl-methyl)-1,3-diaminopropane, modified by propynyl or methoxyphenyltriazolyl groups on the amino functions. Six of
Ye Wei et al.
Journal of the American Chemical Society, 135(10), 3756-3759 (2013-02-27)
We describe here a [3+3]-type condensation reaction of O-acetyl ketoximes and α,β-unsaturated aldehydes that is synergistically catalyzed by a copper(I) salt and a secondary ammonium salt (or amine). This redox-neutral reaction allows modular synthesis of a variety of substituted pyridines
Greg M Kowalski et al.
Biochemical and biophysical research communications, 462(1), 27-32 (2015-05-02)
Defects in muscle glucose metabolism are linked to type 2 diabetes. Mechanistic studies examining these defects rely on the use of high fat-fed rodent models and typically involve the determination of muscle glucose uptake under insulin-stimulated conditions. While insightful, they
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