142-68-7 structure, C5H10O

oxane

CAS No.

142-68-7

Formula:

C5H10O

Basic Info

Tetrahydropyran is a useful synthetic intermediate. Tetrahydropyranyl (THP-) ethers derived from the reaction of alcohols and dihydropyran are common intermediates in organic synthesis. In organic synthesis, the 2-tetrahydropyranyl group is used as a protecting group for alcohols.

Formula
C5H10O
Molecular Weight
86.1323
Exact Mass
86.0732
LogP
1.1869
PSA
9.23
Synonyms

Tetrahydropyran

2H-Pyran, tetrahydro-

Tetarhydropyran

Tetrahydro-2H-pyran

Etrahydropyran

4,5-dihydro-2H-pyran

1,5-EPOXYPENTANE

tetrahydro-4H-pyran

OXACYCLOHEXANE

tetrahydropyrane

THP

4-tetrahydropyran

tetrahydro-2h-pyra

Pentamethylene Oxide

expand collapse

Properties

Appearance & Physical State
colorless to light yellow liquid
Density
0.881
Boiling Point
88ºC
Melting Point
-45ºC
Flash Point
-15ºC
Refractive Index
1.42
Water Solubility
80 g/L (25 ºC)
Stability
Stable under normal temperatures and pressures. On long term storage, substances with similar functional groups form explosive peroxides. Explosive peroxides may form on concentration. Tends to form explosive peroxides; especially when anhydrous. Peroxide
Storage Condition
Flammables area
Vapor Density
3 (vs air)
Vapor Pressure
70.1mmHg at 25°C

Safety Info

Safety Statements
S9-S16-S33-S36
WGK Germany
3
Risk Statements
R11; R19; R9; R36/37/38
HS Code
2932999099
RIDADR
UN 1993
Hazard Class
3
Packing Group
II
Caution Statement
P210; P261; P305 + P351 + P338
Hazard Codes
Hazard Declaration

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