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

HRID 609511Notes

Reaction equation

HRID 609511 reaction equation
[Mn:1].[C:2]([OH:14])(=[O:13])[CH2:3][C:4]([CH2:9][C:10]([OH:12])=[O:11])([C:6]([OH:8])=[O:7])[OH:5].[O-2].[Mn+2]>O>[C:2]([O-:14])(=[O:13])[CH2:3][C:4]([CH2:9][C:10]([O-:12])=[O:11])([C:6]([O-:8])=[O:7])[OH:5].[Mn+3:1]

Participants

5

Reactant 3

HCID 311Citric Acid2×HCID 23930ManganeseHCID 160959Manganese oxide

Product 1

HCID 222741,2,3-Propanetricarboxylic acid, 2-hydroxy-, manganese(3+) salt (1:1)

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

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.

Workup

  1. customwas prepared
  2. additionmix
  3. customto react

Sources & evidence

ORD record
ord-1d96800f2dc44924b95b5b38c02cd91c
Source dataset
uspto-grants-1999_12
Patent number
US05997600

Reaction notes

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