molecular formula: CH2F2 Difluoromethane(1,1-Difluoromethane) UN Number: 3252 risk grades: 2.1
Physical property:
|
molecular weight
|
52.02
|
boiling point(1amt)℃
|
-51.7
|
|
melting point,℃
|
-136
|
boiling point evaporation potential,KJ/Kg
|
390.5
|
|
density(25℃) liquid, g/cm³
|
0.960
|
vapour pressure(25℃),Mpa
|
1.702
|
|
critical temperature,℃
|
78.52
|
critical pressure,Mpa
|
5.808
|
|
critical density ,g/cm³
|
0.430
|
boiling point evaporation potential,KJ/Kg
|
390.5
|
|
water solubility℃,W%
|
0.440
|
specific heat(25℃)liquid,KJ/Kg℃
|
2.35
|
|
ODP
|
0
|
GWP
|
0.11
|
Quality index(Q/320623 NTD 01-2012):
|
purity,%
|
≥99.8
|
|
moisture,%
|
≤0.001
|
|
acidity,%
|
≤0.0001
|
|
evaporated residue,%
|
≤ 0.01
|
|
chloride (cl-)experiment
|
test permition
|
|
noncondensable gas(v/v),%
|
1.5
|
|
appearance
|
colorless transparent liquefied gas
|
Packing specification: 10kg/cylinder, 670Kg/926L, 30Kg/40L steel cyinder
Application: refrigerant gas for air conditinor
