No.

Index name

Top grade

First grade

Qualified product

1

Appearance

Colorless gas under normal temperature and pressure

2

Perfluoropropylene content/(%) ≥

99.99

99.8

99.5

3

Octafluorocyclobutane/(%) ≤

0.005

0.05

0.2

4

Pentafluoropropylene content/(%) ≤

0.05

0.1

0.3

5

Acidity/(%) ≤

0.00001

0.0001

0.0001

6

Octafluoroisobutylene content/(%)

not detected