Quartz glass is a very good acid-resisting material, except oxyhydrogen and high temperature phosphoric acid, almost all acid solutions have little effect on the quartz glass, also it is strong to neutral salt solutions and alkaline solutions.

Also the mechanical performance of quartz glass is better than that of other glass and ceramic materials, therefore our products, quartz glass tubes, distillers and vessels, are widely used in the chemical industry, petrochemical industry, electronic chemistry, biochemical pharmaceuticals and in laboratory.

(2) Performance of the quartz glass used for the chemical industry

1, Chemical performance：

① Except hydrofluoric acid, quartz glass has good corrosion resistance to most acidic, alkaline and neutral material.

② Chemical purity:                                                         （Unit：ppm）

2, Thermal performance:

① The average thermal expansion coefficient at 0～1000℃ is 5.4×10-7/℃

② Recrystallization temperature: Initial temperature is about 1000℃，while the dirty surface will cool down the recrystallization temperature and speed up the recrystallization process.

③ Normal operating temperature:Continuous usage: About 1050℃;

Noncontinuous usage: About 1250℃;

④ Characteristic temperature:

Strain temperature: About 1075℃;

Anneal temperature: About 1180℃;

Hot processing temperature: About 1700～2100℃.

(3) Regular types and specs of the quartz glass