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270970

Pyridine

anhydrous, 99.8%

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About This Item

Linear Formula:
C5H5N
CAS Number:
110-86-1
Molecular Weight:
79.10
UNSPSC Code:
12352005
NACRES:
NA.21
PubChem Substance ID:
57648214
EC Number:
203-809-9
Beilstein/REAXYS Number:
103233
MDL number:
MFCD00011732
Assay:
99.8%
Grade:
anhydrous
Bp:
115 °C (lit.)
Vapor pressure:
10 mmHg ( 13.2 °C), 20 mmHg ( 25 °C)
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grade

anhydrous

Quality Segment

200

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

General description

Our anhydrous solvents deliver exceptionally low water content, making them the ideal choice for moisture-sensitive laboratory applications. Packaged in the exclusive Sure/Seal™ septum bottle system, they are reliably protected against moisture ingress from first use to last drop. The innovative Sure/Seal™ closure combines an advanced plug-style liner with an airtight elastomer and crimp cap design to ensure consistent product integrity. Three unique liner materials provide optimal chemical compatibility across a broad range of solvents. Sure/Seal™ packaging is proven to maintain anhydrous conditions even after repeated punctures. With more than 70 products across all major solvent families, available in pack sizes from 100 mL to 2 L, the portfolio meets virtually every laboratory need. By choosing ready-to-use anhydrous solvents in Sure/Seal™ packaging, researchers eliminate the need for time-consuming and hazardous in-house solvent drying and distillation - saving time, reducing risk, and improving reproducibility.

Application

Anhydrous solvents in Sure/Seal™ packaging are essential wherever water contamination would compromise experimental results. They are widely used in moisture-sensitive applications such as organic synthesis - including Grignard reactions, organometallic chemistry, and catalysis - as well as in peptide, oligonucleotide, and pharmaceutical synthesis.

Packaging

View returnable container options.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

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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

flash_point_f

68.0 °F - closed cup

flash_point_c

20 °C - closed cup

ppe

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

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.

110-86-1

CAS No.

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