Seeking help regarding the relationship between formaldehyde polymerization and pH value
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Does any friend have information on the relationship between formaldehyde polymerization and pH? Even a brief overview would be helpful; thank you in advance! !
So frustrated~~ Does no one have any experience in this area? ~
1# x*u Formaldehyde polymerization usually occurs due to too high a concentration; adding a small amount of methanol can prevent its polymerization
The polymerization of formaldehyde generally has no direct relationship with the pH value. There are two common methods to prevent polymerization: one involves the use of inhibitors such as methanol, while the other uses polyreaction inhibitors that suppress condensation reactions, such as hydroxymethyl cellulose. Additionally, the optimal storage temperature is generally the percentage concentration plus 5; for 37 wt%, a temperature of over 35°C is sufficient. For higher concentrations, polymerization tends to occur more easily, so an additional 5°C is added, and for 55 wt%, the temperature should not exceed 60°C.
Generally, the polymerization of formaldehyde is closely related to concentration and temperature; it’s not clear what role acidity plays in this process.