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676772

Pyridine

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
EC Number:
203-809-9
UNSPSC Code:
12352005
PubChem Substance ID:
329760652
Beilstein/REAXYS Number:
103233
MDL number:
MFCD00011732
eCl@ss:
32039090
Assay:
≥99.0%
Grade:
ACS reagent
Bp:
115 °C (lit.)
Vapor pressure:
10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)
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grade

ACS reagent

Quality Segment

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

≤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

SMILES string

C1=CN=CC=C1

InChI

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

InChI key

JUJWROOIHBZHMG-UHFFFAOYSA-N

General description

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 have been analyzed and the values obtained were used to calculate its thermodynamic properties. Photodegradation and bacterial degradation of Pyr has been studied.
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.

Application

Pyridine may be used in the synthesis of the following:
  • complexes with cobalt(II) halides
  • pyridine-d 5, a deuterated form of pyridine
  • ionic liquid matrices (ILMs)

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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

3 - Flammable liquids

WGK

WGK 2

Flash Point (°F)

68.0 °F - closed cup

Flash Point (°C)

20 °C - closed cup

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Class I Designated Chemical Substances

prtr

Group 4: Flammable liquids + Type 1 petroleums + Hazardous rank II + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

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