Citric Acid → 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, manganese(3+) salt (1:1)

Participants

Reaction Steps

A fertilizer additive containing 5% manganese was prepared by adding 360 grams of citric acid to 1181 grams of water. After the citric acid was dissolved, 128 grams of manganese (II) oxide was added to the mix and allowed to react and form manganese citrate, an insoluble white to very light pink precipitate. After the precipitate formed, 320 grams of 2-hydroxyethylamine and 10 grams of dimethylaminopropylamine were added. The precipitate was dissolved to produce a clear 5% manganese chelated solution having a pH of 10.8. This additive was added to conventional, N--P--K liquid fertilizers to produce clear fertilizer compositions.

Provenance & Evidence