Nature:
1. Appearance: Polyphosphate can be colorless or white solid.
2. Solubility: polyphosphate has good solubility and can be dissolved in water, and the solution is slightly acidic.
3. Thermal stability: polyphosphate has good thermal stability at high temperatures.
Purpose:
1. Polyphosphate is an excellent flame retardant, which can be used to synthesize flame retardant plastics, coatings and textiles.
2. Polyphosphate is used as an electrolyte in the battery industry and can be used to prepare lithium-ion batteries and fuel cells.
3. Polyphosphate can also be used as an additive in the cement and ceramic industry, which can improve the performance and stability of materials.
Preparation:
Polyphosphate can be obtained by reacting phosphoric acid or its salts with aldehydes. One of the common methods is to heat phosphite and aldehyde under acidic conditions to produce polyphosphate.Safety information:
1. Polyphosphate is non-toxic, but it is still necessary to avoid inhalation or contact.
2. Wear appropriate personal protective equipment during operation, such as chemical gloves, goggles and overalls.
3. Polyphosphate should not be mixed with strong oxidants and strong alkali substances to avoid dangerous reactions.
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