IS 4129 : 1967 Methods of chemical analysis of aluminium trifluoride

1 scope

1.1 This standard covers methods of chemical analysis forfluorine and other constituents of aluminium trifluoride generallimits for which are given below:Constituent                     Percent

Totalwater                     0.5 Max

Fluorine as aluminium fluoride   85 MinSilica                          0.5 Max

Ironoxide                      0.3 Max

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 266 : 1961Specification for sulphuric acid

IS 265 : 1962Specification for hydrochloric acid

IS 1070 : 1960Specification for water, distilled quality

IS 3191 : Methods of samplingcryolite and aluminium trifluoride