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Item

Type I

Type Ⅱ

Top grade

First grade

Mass fraction of difluorochloromethane/% ≥

99.9

99.6

99.95

Mass fraction of moisture/% ≤

0.0010

0.0030

0.0020

Mass fraction of acidity/% ≤

0.00001

0.0001

0.0001

Residue on Evaporation mass fraction/% ≤

0.010

Chloride (Cl) test

Pass the test

-

Volume fraction of non-condensable gas (25℃)/% ≤

1.5

-

Volume fraction of oxygen in the gas phase (20℃)/% ≤

-

0.005

Note: When difluoro-chloromethane is used as a refrigerant, check the chloride (Cl) test and the volume fraction of non-condensable gas (25°C).