508A

R-23 / 39%
FC-116 / 61% (Hexafluoroethane)
R-23 / R-125
R-503 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.
Boiling Point Latent Heat Vaporization Density Saturated Liquid
Density Saturated Vapor
-122.22°F 70.19 @ 70 F, Btu/lb 97.6 @ 70 F, lb/ft3
0.420 @ 70 F, lb/ft
3
CGA Valve Outlet CAS Registry No. UN Number
660 Trifluoromethane 75-46-7
FC 116 354-33-6
1078
National Stock Number (NSN) Applicable to 508A MIL Specs/ Fed Specs
MSDS for 508A


Grade
Part #
Purity Minimum Cylinder
Size
Volume
LBS
Pressure
@ 70 F psia
Comments
Chemically Pure
K6835
99.9% Min. Bulk
761
454
056
D50
D30
Bulk
1750
1000
125
50
30
260
260
260
260
260
260

None


Uses: 508A has been identified as the energy efficient replacement for R-503 and R-13. 508A can be used in very low temperature applications, such as medical or blood storage, freeze drying applications.

Equipment: Its properties are nearly identical to those of 503, such that new designs or retrofits require minimal modifications.

Last Updated: January 4, 2001
Contact: cfc@c-f-c.com