alcohol type
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      cata12
  detail

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