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Difluoroethane (HFC-152a)
Identification
Synonyms:
Difluoroethane; Ethylidene
Difluoride; Freon 152a; R-152a; Fluorocarbon 152a
CAS
No.: 75-37-6
Molecular
Weight: 66.05
Molecular
Formula: C2H4F2
Structural Formula:

b.p.
(1 atm): -24.7°C
Density
(25°C): 0.901g/cm3
Vapor
Pressure: 0.599Mpa
Critical
T.: 113.5°C
Critical
P.: 45.0 mPa
Critical
Density: 0.365g/cm3
ODP:
0
GWP:
0.03
Application
HFC-152a is used in temperature sensing
agent, alternative for CFC-12 as refrigerant and aerosol propellant
Specifications
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Item
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Specification
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First
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Second
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Third
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HFC-152a
purity, % |
99.9
min
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99.8
min
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99.5
min
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moisture,
mg/kg
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10
max
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10
max
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20
max
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acidity,
ppm
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0.1
max
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0.1
max
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1.0max
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nonvolatile
residues, mg/kg
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100
max
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100
max
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100
max
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noncondensable
gas in vapor phase, %
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1.5
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1.5
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1.5
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Standard Packing
740kgs/cylinder, 9.62mt/20' FCL
Risks and Safety Info
Flammable gas; Class 2.1; UN1030; Filling ratio 0.79
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