Dichlorodifluoromethane and
Difluoroethane (R-500)

Replacement Alternative 412A

CHCl2F2+
CH3CHF2

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General Characteristics Health Hazards Material Recommendations
A colorless, nonflammable, liquefied gas. A simple asphyxiant. Normal materials can be used.
TLV-TWA Flammable Limits DOT Class / Label
None Established Nonflammable 2.2 / Nonflammable
Molecular Weight Specific Gravity Specific Volume
120.9 3.84 cu.ft./lb @ 70 F
CGA Valve Outlet CAS Registry No. UN Number
660 56275-41-3 2602
National Stock Number (NSN) Applicable to R-500 MIL Specs/ Fed Specs
MSDS for R-500


Grade
Part #
Purity Minimum Cylinder
Size
Volume
LBS
Pressure
@ 70 F
Comments
Chemically Pure
465300
Azeotropic Mixture 056
D50
D30
125
50
30
85.3
85.3
85.3

None


Production Discontinued as of 1/1/1996 by order of Clean Air Act. Alternative product replacement is 412A.