Quartz sight glass has high chemical and thermal

Quartz sight glass has high chemical and thermal, in addition, not only at room temperature, and corrosion resistance of various acid, aqua regia, neutral salt, sulfur and carbon at high temperature and chemical resistance than Ni Cr alloy and ceramic 150 times, good acid resistant materials.
Quartz sight glass is acidic. It is relatively poor in alkali resistance and alkali resistant salt. It can produce soluble silicate with this type of reagent, so it is not suitable for producing strong alkaline reaction apparatus.
Below 800 C, except for PbO, the silica sight glass is not corroded by metal oxides. The reaction is more than 800 degrees above ZnO and R2O (R indicates alkali metal), and it reacts with BaO, MgO and Fe2O3 above 900. Above 1000oC reacted with AI2O3 and CaO. The corrosion-effect of molten metal on quartz sight glass is different. The corrosion resistance of Ag, Au, Cd, Hg, Pt, Mo, Sn, W and Zn react with Ca above 600 C, and react with Al, Zn and Hg above 800 C, and react with it above 250 C. Silicon erosion of the quartz sight glass, and carbon at 1800 DEG C and quartz sight glass reaction at 850 DEG C, quartz sight glass and Na2CO3 no reaction, 900 DEG C, quartz sight glass and Na2So4 reaction, and at 800 DEG C sodium, calcium chloride anhydrous borax, strong erosion of quartz sight glass.

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