407A

R-32 / Difluoromethane / 20%
R-125 / Pentafluoroethane / 40%
R-134 / 1,1,1,2-tetrafluoroethane / 40%
HFC-32/HFC-125/HFC-134a
R-502 Replacement
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General Characteristics Health Hazards Material Recommendations
A colorless, nonflammable, noncorrosive gas with etheral odor. An asphyxiant. Normal materials can be used.
TLV-TWA Flammable Limits DOT Class / Label
1000 ppm Nonflammable 2.2 / Refrigerant Gas N.O.S.
Molecular Weight Latent Heat Vaporization Density Saturated Liquid
Density Saturated Vapor
90.1 76.779 @ 70 F, Btu/lb 72.3808 @ 70 F, lb/ft3
2.684 @ 70 F, lb/ft
3
CGA Valve Outlet CAS Registry No. UN Number
660 Difluoromethane 75-10-5
Pentafluoroethane 354-33-6
1,1,1,2-tetrafluoroethane 811-97-2
1078
National Stock Number (NSN) Applicable to 407A MIL Specs/ Fed Specs
MSDS for 407A


Grade
Part #
Purity Minimum Cylinder
Size
Volume
LBS
Pressure
@ 70 F psia
Comments
Chemically Pure
K6735
99.9% Min. Bulk
761
454
056
D50
D30
Bulk
1750
1000
125
50
30
163.2
163.2
163.2
163.2
163.2
163.2

None


Uses: 407A has been identified as the energy efficient replacement for R-502 in nonhermetic systems (hermetics use 407B). 407A has the lowest global warming potential of any HFC replacement for R-502. This is a zero ODP refrigerant.

Last Updated: January 4, 2001