W296600

Sigma-Aldrich

Pyridine

≥99%

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
Molecular Weight:
79.10
FEMA Number:
2966
Beilstein/REAXYS Number:
103233
EC Number:
Council of Europe no.:
604
MDL number:
PubChem Substance ID:
NACRES:
NA.21

Quality Level

biological source

synthetic

grade

Halal
Kosher

Agency/Method

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.)

Documentation

see Safety & Documentation for available documents

Featured Industry

Flavors and Fragrances

Organoleptic

fishy; sour

food allergen

no known allergens

fragrance allergen

no known allergens

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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Related Categories

Packaging

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

Other Notes

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Pictograms

FlameExclamation mark

Signal Word

Danger

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

UN1282 - class 3 - PG 2 - Pyridine

WGK Germany

WGK 2

Flash Point(F)

68.0 °F - closed cup

Flash Point(C)

20 °C - closed cup

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)...
Total syntheses of complanadines A and B.
Le Zhao et al.
Angewandte Chemie (International ed. in English), 52(6), 1722-1725 (2013-01-03)
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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