Separation method of iminodiacetic acid

Separation method of iminodiacetic acid

  • CN 103,709,056 A
  • Filed: 12/24/2013
  • Published: 04/09/2014
  • Est. Priority Date: 12/24/2013
  • Status: Active Application
First Claim
Patent Images

1. a separation method for iminodiethanoic acid, is characterized in that, comprises the following steps:

  • A) iminodiacetic acid disodium salt solution is neutralized to slightly acidic with sulfuric acid, concentrated, after heating, filter, obtain filtrate;

    B) with sulfuric acid, regulate the pH value of described filtrate, decrease temperature crystalline, filters, and obtains iminodiethanoic acid.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×