Octafluorocyclobutane
Content introduction
1、 Product introduction
A colorless, tasteless, non-toxic and incombustible gas. Stable in nature. | |
中文名：八氟环丁烷 | 分子式：C4F8 |
英文名：Perfluorocyclobutane | 相对分子量：200 |
CAS No：115-25-3 | 危险性类别：第2.2类 |
UN No：1976 | 溶解性：微溶于水 |
熔点：-40.2℃ | 沸点：-6.04℃ |
临界温度：115.22℃ | 液体相对密度（水=1）: 1.51 |
临界压力: 2.78MPa | 相对密度（空气=1）: 7.0 |
2、 Technical indicators
Inspection items | index |
八氟环丁烷（v/v）% ≥ | 99.999 |
N2 CO CO2 ppmv ≤ | 4 |
氧 ppmv ≤ | 1 |
其它氟碳化合物ppmv ≤ | 8 |
水 ppmv ≤ | 2 |
总酸度（以HF计）ppmv ≤ | 0.1 |
3、 Application of octafluorocyclobutane
It is mainly used in high-voltage insulation, VLSI etching agent, cleaning agent, mixed refrigerant, aerosol, etc.
5、 Precautions
Store in a cool and ventilated warehouse. Keep away from kindling and heat source. The warehouse temperature should not exceed 50 ℃; It shall be mixed with combustible (combustible) materials and oxidants
Store separately and avoid mixing. The storage area shall be equipped with leakage emergency treatment equipment. The operators must be specially trained and strictly abide by the operating procedures.
Closed operation and local ventilation. It is recommended that operators wear filter gas masks (half masks). At present, there is no report of occupational poisoning, but pyrolysis
It can release highly toxic hydrogen fluoride. In case of poisoning, the victim should be immediately transferred to a pollution-free area. If necessary, artificial respiration should be used and a doctor should be invited
Governance. The bottled gas product is low-pressure liquefied gas. When using the tail gas, the residual pressure in the bottle shall be kept at 0.3MPa, and the value of * * * shall not be less than
0.2 MPa residual pressure, close the cylinder valve to ensure the gas quality and safety. Do not expose the cylinder to the sun, throw it heavily, hit it, and bake the cylinder with open fire,
Rough handling is strictly prohibited.
