Reaction #696693

ord-1d96800f2dc44924b95b5b38c02cd91c

Reaction equation

[Mn+2].[O-2]
manganese (II) oxide
[Mn]
manganese
O=C(O)CC(O)(CC(=O)O)C(=O)O
citric acid
O=C(O)CC(O)(CC(=O)O)C(=O)O
citric acid
→
O=C([O-])CC(O)(CC(=O)[O-])C(=O)[O-].[Mn+3]
manganese citrate

Reactants

[Mn+2].[O-2]
manganese (II) oxide
[Mn]
manganese
O=C(O)CC(O)(CC(=O)O)C(=O)O
citric acid
O=C(O)CC(O)(CC(=O)O)C(=O)O
citric acid

Reagents

None

Solvents

O
water

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    Otherwas prepared
  2. 2
    workup.ADDITIONmix
  3. 3
    Otherto react

Procedure

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.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US05997600uspto-grants-1999_12