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[96%powder Paraformaldehyde] there are good and bad

96%powder Paraformaldehyde (CH2O) n, also known as solid formaldehyde, formaldehyde polymer, low molecular weight formaldehyde polymerization degree n is about 8-12, solubility is 80, there is a strong smell of formaldehyde, polymerization degree n in more than 12 solubility is 120-170, insoluble in ethanol, propyl alcohol and ether, soluble in dilute acid and dilute alkali solution, melting decomposition quickly, Does not have some mechanical properties of plastic, and can not be processed into a film, can be used as a disinfectant, fungicide and manufacturing resin and artificial ivory, can be used in alkaline conditions (such as HaOH) by polymerization of pure formaldehyde.

Paraformaldehyde is produced by dehydration, concentration and drying of formaldehyde, and its production is divided into two steps: first, 37% of formaldehyde is heated under negative pressure to remove part of the water, concentrated into 65%-70% concentrated aldehyde under the condition of alkaline catalysis polymerization, and then the finished product is dried. It is worth noting that in order to reduce the loss of aldehyde, it is necessary to reduce the boiling point.