3,4-Dihydro-2H-pyran|DHP|110-87-2
Specification of 3,4-Dihydro-2H-pyran
1: Identification
Name: 3,4-Dihydro-2H-pyran
Synonyms: 2,3-Dihydro-4H-pyran ; 5,6-Dihydro-4H-pyran ; DHP; Dihydropyran
Molecular Structure:
Molecular Formula: C5H8O
Molecular Weight: 84.12
CAS NO.: 110-87-2
EINECS: 203-810-4
2：Properties
Density: 0.922
Melting point: -70 ºC
Boiling point: 86ºC
Refractive index: 1.4405-1.4425
Flash point: -9 ºC
Water solubility: 20 g/L (20 ºC)
3: Quality Standard
|
Test Item |
Specification |
|
Appearance |
Colorless Transparent liquid |
|
Purity(GC) |
≧98.00% |
|
Water(K.F.) |
≦0.30% |
|
Tetrahydropyran |
≦2% |
Packing: 200L steel drum, net weight is 180kg/drum.
Storage Condition: stored under normal temperature, sealed and keep away from open fire.
Usage: 1: used as pharmaceutical intermediates; 2: the alcohol group protecting agent, widely used hydroxy protecting reagents.; 3:dihydropyran active chemical properties, through polymerization, hydrogenation, oxidation and other reactions can be obtained tetrahydropyran, pentanediol, glutaric, valerolactone, pentadiene and resin products.
UN NO: 2333 Hazard Class: 3(6.1) Packing Group: II
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