Citric Acid → Citric acid, lanthanum(3+) salt(1:1)

HRID 1760888

Reaktionsgleichung

Reaktionsgleichung von HRID 1760888
[C:1]([OH:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([OH:11])=[O:10])([C:5]([OH:7])=[O:6])[OH:4].[OH-].[Na+].O.O.O.O.O.O.O.[Cl-].[La+3:24].[Cl-].[Cl-].C([O-])(=O)CC(CC([O-])=O)(C([O-])=O)O.[Na+].[Na+].[Na+]>O>[C:1]([O-:13])(=[O:12])[CH2:2][C:3]([CH2:8][C:9]([O-:11])=[O:10])([C:5]([O-:7])=[O:6])[OH:4].[La+3:24]

Komponenten

6

Edukt 4

HCID 311Citric AcidHCID 6224Trisodium citrateHCID 14798Sodium HydroxideHCID 165791Lanthanum chloride heptahydrate

Produkt 1

HCID 18149Citric acid, lanthanum(3+) salt(1:1)

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel3×

Reaktionsbedingungen

Temperatur
35 °C

Versuchsvorschrift

A sodium citrate solution was formed by dissolving 59 g citric acid in 500 ml water and then adding 37 g sodium hydroxide dissolved in 50 ml water. The temperature increased from 20 to 50° C. 113 g lanthanum chloride heptahydrate dissolved in 200 ml of warm water was then mixed into the sodium citrate solution and resulted in the formation of a dense gelatinous floc or gel of lanthanum citrate. While the solubility of the citrate was not measured, it was inferred to be about 0.01 g/l. Such a gel is clearly not suited for addition to the filter as it is likely to raise the pressure drop excessively. Nor is it suitable for addition to the bulk of the pool water because it would be unsightly and disperse slowly.

Quellen und Nachweise

ORD-Eintrag
ord-986557b23d714ccb9ccaf0abf718fef2
Quelldatensatz
uspto-grants-2005_01
Patentnummer
US06846432B2

Verknüpfte Notizen

Wird geladen…