Overview
Sodium oxide is an alkali metal oxide that does not exist alone in nature. In the ceramic industry, it is often introduced with feldspar and porcelain stone, and its effect is similar to that of potassium oxide.
Uses
Sodium oxide is mainly used to prepare sodium compounds, and can be used as a bleaching agent, disinfectant, chemicalbook dehydrogenation agent, etc.
Uses
1. Used as an analytical reagent, such as an alkaline oxidizing solvent for decomposing samples;
2. Used as an oxidant, preservative, deodorant, bactericide, bleaching agent, etc. In the chemical industry, it is used to prepare other peroxides, etc.

PVC Resin the physical appearance is white powder, non-toxic, odorless. Relative density 1.35-1.46. It is thermoplastic,insoluble in water  and ethanol, expandable or soluble in ether, ketone, fatty chlorohy-drocarbons or aromatic hydrocarbons with strong anti--corrosiveness, and good dieletric property.Polyvinyl chloride is flame-retardant (flame retardant value above 40), high chemical resistance (resistant to concentrated hydro chloric acid, 90% sulfuric acid, 60% ni tric acid and 20% so dium hydro xide), mechanical strength And the advantages of good electrical insulation. But its heat resistance is poor, with a softening point of 80°C, it starts to decompose and change color at 130°C, and precipitate HCI.  

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