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270407

Sigma-Aldrich

Pyridine

suitable for HPLC, ≥99.9%

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Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
Beilstein:
103233
EC Number:
203-809-9
MDL number:
MFCD00011732
PubChem Substance ID:
329752936

vapor density

2.72 (vs air)

Quality Level

100

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

Assay

≥99.9%

form

liquid

autoignition temp.

899 °F

purified by

glass distillation

expl. lim.

12.4 %

technique(s)

HPLC: suitable

impurities

<0.050% water

evapn. residue

<0.0004%

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.)

λ

H2O reference

UV absorption

λ: 305 nm Amax: 1.00
λ: 315 nm Amax: 0.15
λ: 335 nm Amax: 0.02
λ: 350-400 nm Amax: 0.01

application(s)

food and beverages

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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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

Regulatory Information

危险化学品

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Nicotine Levels and Presence of Selected Tobacco-Derived Toxins in Tobacco Flavoured Electronic Cigarette Refill Liquids.
Farsalinos KE, et al.
International Journal of Environmental Research and Public Health, 12(4), 3439-3452 (2015)
Daniel A Kirschner et al.
Current Alzheimer research, 5(3), 288-307 (2008-06-10)
Targeting the initial formation of amyloid assemblies is a preferred approach to therapeutic intervention in amyloidoses, which include such diseases as Alzheimer's, Parkinson's, Huntington's, etc., as the early-stage, oligomers that form before the development of beta-conformation-rich fibers are thought to
The far-infrared spectra of metal-halide complexes of pyridine and related ligands.
Clark RJH and Williams CS.
Inorganic Chemistry, 4(3), 350-357 (1965)
Gabriela Venturini et al.
American journal of physiology. Cell physiology, 317(2), C326-C338 (2019-05-09)
Atherosclerotic plaque development is closely associated with the hemodynamic forces applied to endothelial cells (ECs). Among these, shear stress (SS) plays a key role in disease development since changes in flow intensity and direction could stimulate an atheroprone or atheroprotective
Allison N Lau et al.
eLife, 9 (2020-07-11)
Tumors are composed of many different cell types including cancer cells, fibroblasts, and immune cells. Dissecting functional metabolic differences between cell types within a mixed population can be challenging due to the rapid turnover of metabolites relative to the time
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