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Ingredients. (1) Water 96.50 (2) N-[(2,4-dihydroxyphenyl)ethyl]glycine 1.5 (3) Iron Bis-glycinate 2.0. Procedure. The mixture of all ingredients is heated at 90 to 95 C for 2 hours. The green color of iron glycinate changes to a dark red-brown color. Water is then evaporated off to ½ of its original volume. Ethanol (50 mL) is then added and the mixture cooled. A reddish brown material is formed. The precipitate is filtered and washed with water to remove any unreacted iron glycinate. A reddish brown N-[(2,4-dihydroxyphenyl)ethyl]glycine Iron is obtained.

1. additionThe mixture of all ingredients
2. temperatureis heated at 90 to 95 C for 2 hours
3. customWater is then evaporated off
4. additionEthanol (50 mL) is then added
5. temperaturethe mixture cooled
6. customA reddish brown material is formed
7. filtrationThe precipitate is filtered
8. washwashed with water
9. customto remove any unreacted iron glycinate