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463159

Sigma-Aldrich

2H-Pyran-2-one

90%

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Synonym(s):
α-Pyrone
Empirical Formula (Hill Notation):
C5H4O2
CAS Number:
Molecular Weight:
96.08
Beilstein/REAXYS Number:
1511
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

assay

90%

refractive index

n20/D 1.53 (lit.)

bp

102-103 °C/20 mmHg (lit.)

density

1.197 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

O=C1OC=CC=C1

InChI

1S/C5H4O2/c6-5-3-1-2-4-7-5/h1-4H

InChI key

ZPSJGADGUYYRKE-UHFFFAOYSA-N

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1 of 4

This Item
177229262102528692
2H-Pyran-2-one 90%

463159

2H-Pyran-2-one

4H-Pyran-4-one ≥98%

177229

4H-Pyran-4-one

5,6-Dihydro-2H-pyran-2-one technical grade, 90%

262102

5,6-Dihydro-2H-pyran-2-one

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

refractive index

n20/D 1.53 (lit.)

refractive index

-

refractive index

n20/D 1.483 (lit.)

refractive index

n20/D 1.478 (lit.)

bp

102-103 °C/20 mmHg (lit.)

bp

210-215 °C (lit.)

bp

103 °C/10 mmHg (lit.)

bp

125 °C/0.1 mmHg (lit.)

density

1.197 g/mL at 25 °C (lit.)

density

-

density

1.139 g/mL at 25 °C (lit.)

density

1.209 g/mL at 25 °C (lit.)

General description

2H-Pyran-2-one (a-Pyrone) is a heterocyclic building block. Photochemistry of 2H-pyran-2-one has been investigated by laser flash photolysis with infrared detection. Ketene and a bicyclic lactone were obtained as major photoproducts.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Store at 2-8°C

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

201.2 °F - closed cup

flash_point_c

94 °C - closed cup

ppe

Eyeshields, Gloves


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Solution photochemistry of 2H-pyran-2-one: laser flash photolysis with infrared detection of transients.
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