Craig,

I don't think so, looking at this:

https://www.engineeringtoolbox.com/refrigerants-d_902.html


-------------
Max
Charleston SC


On Tue, Aug 28, 2018 at 3:57 PM Craig via Mercedes <mercedes@okiebenz.com>
wrote:

>
> Isn't there an "R" number for the propane/isobutane mixture?
>
> http://www.diligentinstruments.com/di-517.html says,
> ---------------------------------------
> Built-in 89 kinds of refrigerant NIST:According to American NIST
> standard
> R11 R113 R114 R115 R116 R12 R123 R124 R125 R1270 R13 R134A R14 R141B
> R142B R143A R152A R170 R21 R218 R22 R227EA R23 R236EA R245CA R245FA R290
> R32 R401A R401B R401C R402A R402B R403A R403B R404A R405A R406A R407A
> R407B R407C R407D R407E R408A R409A R409B R41 R410A R410B R411A R411B
> R412A R413A R414A R414B R415A R415B R416A R417A R418A R419A R420A R421A
> R421B R422A R422B R422C R422D R423A R424A R425A R426A R427A R428A R50
> R500 R501 R502 R503 R504 R507A R508A R508B R509A R600 R600A R717 R744
> (Co2) R1234
> ---------------------------------------
>
>
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