Phosphoric Acid → Phosphoric Acid

HRID 2285885Notes

Reaction equation

[P:1](=[O:5])([OH:4])([OH:3])[OH:2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[F-].[Ca+2:22].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[S:27](=[O:31])(=[O:30])([OH:29])[OH:28]>>[S:27]([O-:31])([O-:30])(=[O:29])=[O:28].[Ca+2:22].[P:1](=[O:2])([OH:5])([OH:4])[OH:3]

Participants

Reactant 3

HCID 1004Phosphoric Acid2×

HCID 1118Sulfuric Acid

HCID 10207414Fluorapatite (Ca5F(PO4)3)2×

Product 2

HCID 1004Phosphoric Acid

HCID 24497Calcium Sulfate

Procedure

A process for preparing wet process phosphoric acid from phosphate rock containing acid insoluble heat labile iron sulfide and organic compounds wherein phosphate rock is heated to give a heated rock and the heated rock is reacted with a mixture of sulfuric acid and phosphoric acid to form calcium sulfate and phosphoric acid, comprising

Workup

temperatureis heated
customto give a heated rock

Sources & evidence

ORD record: ord-510a5542eed34b8c87dfcaba60d424b7
Source dataset: uspto-grants-1982_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04325928

Reaction notes

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