GB/T 34091-2017 in English

The technical indicators of hexafluoroethane are the key to ensuring its efficient application in the electronics industry. According to Table 1, the purity of hexafluoroethane must reach 99.999% (volume fraction), and the content of various impurities such as hydrogen, oxygen + argon, and nitrogen are strictly limited.

For example, the moisture content in hexafluoroethane is controlled at ≤2ppm, which requires the use of efficient drying technology during the production process. In addition, the acidity index in terms of HF must be ≤0.1ppm (mass fraction) to ensure that the product will not corrode the equipment during use.

Sampling and determination

According to GB/T 3723, the sampling of hexafluoroethane must ensure safety. Each batch of products should be tested for key indicators, such as purity and impurity content, and acidity should be sampled in proportion.

Instrument calibration and operation

During the analysis, calibrated chromatographic columns (such as Porapak ΔQ and Al₂O₃ capillary columns) must be used to ensure data accuracy. It is recommended to check the performance of the equipment regularly and keep calibration records.

Packaging and storage

According to GB/T5099, it is recommended to use gas cylinders with treated inner surfaces, and the filling coefficient should be selected according to the pressure level (1.06 kg/L at 12.5 MPa). The product should be accompanied by a quality certificate and marked with necessary information.