Skip to Content
MilliporeSigma
All Photos(4)

Documents

270970

Sigma-Aldrich

Pyridine

anhydrous, 99.8%

Sign Into View Organizational & Contract Pricing
All Photos(4)

About This Item

Empirical Formula (Hill Notation):
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
Beilstein/REAXYS Number:
103233
EC Number:
203-809-9
MDL number:
MFCD00011732
UNSPSC Code:
12352005
PubChem Substance ID:
57648214
NACRES:
NA.21

grade

anhydrous

Quality Level

200
300

vapor density

2.72 (vs air)

vapor pressure

10 mmHg ( 13.2 °C)
20 mmHg ( 25 °C)

assay

99.8%

form

liquid

autoignition temp.

899 °F

expl. lim.

12.4 %

impurities

<0.003% water
<0.005% water (100 mL pkg)

evapn. residue

<0.0005%

color

colorless

refractive index

n20/D 1.509 (lit.)

pH

~8.81 (20 °C)

bp

115 °C (lit.)

mp

−42 °C (lit.)

density

0.978 g/mL at 25 °C (lit.)

SMILES string

C1=CN=CC=C1

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Pyridine is a basic N-heterocyclic compound. It acts as nitrogen donor ligand and forms many metal-pyridine complexes. Its complexes having tetrahedral and octahedral geometries can be differentiated by infra-red spectral investigations.

Application

Pyridine (py) may be used in the preparation of vanadium oxide nanoparticles and iron benzenedicarboxylates, Fe(OH)(BDC)(py)0.85 (BDC = 1,4-benzenedicarboxylate, py = pyridine). It may be employed as catalyst in Knoevenagel condensation reaction.
Pyridine may be used as a base for the conversion of:
  • Alkyltrichlorosilanes to trimethoxyalkylsilanes, which are used as precursors for preparing alkylsilicates.
  • 1-Indanone to 1-indanone oxime, which can undergo reductive ring-expansion to form tetrahydroquinoline.

It may also be used to catalyze the borylation reaction of haloarenes to form arylboronates without using transition metal catalysts.

Packaging

View returnable container options.

also commonly purchased with this product

Product No.
Description
Pricing

related product

Product No.
Description
Pricing

suggested gloves for splash protection

Product No.
Description
Pricing

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_germany

WGK 2

flash_point_f

68.0 °F - closed cup

flash_point_c

20 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
STBK8972
STBK9525
STBK8968
STBK8970
STBK6987

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 4

1 of 4

Pyridine puriss. p.a., ACS reagent, reag. Ph. Eur., &#8805;99.5% (GC)

Sigma-Aldrich

33553

Pyridine

Pyridine Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1558

Pyridine

Pyridine ReagentPlus&#174;, &#8805;99%

Sigma-Aldrich

P57506

Pyridine

Pyridine hydrochloride 98%

Sigma-Aldrich

243086

Pyridine hydrochloride

Tooran Khazraie et al.
Biotechnology for biofuels, 10, 47-47 (2017-03-03)
Hot water hydrolysis process is commercially applied for treating wood chips prior to pulping or wood pellet production, while it produces hydrolysis liquor as a by-product. Since the hydrolysis liquor is dilute, the production of value-added materials from it would
Pyridine-catalyzed radical borylation of aryl halides
Zhang L & Jiao L
Journal of the American Chemical Society, 139(2), 607-610 (2017)
DIBALH-Mediated Reductive Ring-Expansion Reaction of Cyclic Ketoxime
Taku I, et al
Organic Syntheses, 93, 1-1 (2016)
Preparation of Diisopropylammonium Bis(catecholato)cyclohexylsilicate
Kingson L, et al
Organic Syntheses, 94, 16-16 (2017)
Maryam Shamloo et al.
Scientific reports, 7(1), 9133-9133 (2017-08-24)
Predictions of global increased temperature are for 1.8-4 °C by 2100. Increased temperature as an abiotic stress may exert a considerable influence on the levels of secondary metabolites in plants. These secondary metabolites may possibly exert biological activities beneficial in prevention
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service