Quartz glass is a special industrial glass made of silicon dioxide and is an extremely excellent material. It possesses a series of outstanding physical and chemical properties.

1. High temperature resistance. The softening point of quartz glass is approximately 1730℃. It can be used for a long time at 1100℃ and can withstand short-term use at up to 1400℃.

2. Corrosion resistance. Quartz glass hardly undergoes chemical reactions with any acid except hydrofluoric acid. Its chemical stability at high temperatures is unparalleled by any other engineering material.

3. Good thermal stability. Quartz glass has an extremely small coefficient of thermal expansion and can withstand drastic temperature changes. Even if heated to around 1100℃ and then placed in cold water, it will not crack.

4. Excellent light transmission. Quartz glass has good light transmission performance across the entire light spectrum from ultraviolet to infrared. The visible light transmission rate is over 95%, and in the ultraviolet spectral region, the transmission rate can reach over 90%.

5. Good electrical insulation. The resistance value of quartz glass is about 10,000 times that of ordinary glass, making it an excellent electrical insulating material. It maintains good electrical performance even at high temperatures.

In the field of chemical engineering, quartz glass can be used to make high-temperature acid-resistant gas combustion, cooling and ventilation devices, evaporation, cooling and absorption equipment for acidic solutions, storage containers, and other physical and chemical laboratory apparatus for the preparation of distilled water, hydrochloric acid, nitric acid, sulfuric acid, etc. In high-temperature operations, it can be used to make optical glass crucibles, electric furnace core tubes, and gas combustion radiators. In the field of optics, quartz glass and quartz glass wool can be used to make rocket nozzles, heat shields for spacecraft, and observation windows, etc. In short, with the development of modern science and technology, quartz glass has been applied more widely in various fields.