Sulfuric Acid → Phosphoric Acid

HRID 1277502Notes

Reaction equation

HRID 1277502 reaction equation
[S:1](=[O:5])(=[O:4])([OH:3])[OH:2].[P:6]([OH:10])([O-:9])([O-:8])=[O:7].[Ca+2:11]>>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Ca+2:11].[P:6](=[O:7])([OH:10])([OH:9])[OH:8]

Participants

4

Reactant 2

HCID 1118Sulfuric AcidHCID 24441Calcium hydrogen phosphate

Product 2

HCID 1004Phosphoric AcidHCID 24497Calcium Sulfate

Procedure

adding sulfuric acid to the crystallization slurry to react with at least the monocalcium phosphate to form solid calcium sulfate and phosphoric acid, the crystallization slurry being maintained at a soluble sulfate concentration greater than the soluble sulfate concentration of the dissolving slurry;

Sources & evidence

ORD record
ord-1991fbf1956941318a8a20ac703dcc7a
Source dataset
uspto-grants-1981_07
Patent number
US04277448

Reaction notes

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