Sulfuric acid magnesium salt (1:1) → Calcium Sulfate

HRID 1389757Notes

Reaction equation

[Ca:1].[S:2]([O-:6])([O-:5])(=[O:4])=[O:3].[Mg+2:7]>>[OH-:3].[Mg+2:7].[OH-:3].[S:2]([O-:6])([O-:5])(=[O:4])=[O:3].[Ca+2:1]

Participants

Reactant 2

HCID 24083Sulfuric acid magnesium salt (1:1)

HCID 5460341Calcium

Product 2

HCID 24497Calcium Sulfate

HCID 73981Magnesium Hydroxide

Procedure

It should be noted that the fly ash had residual basicity as basic calcium and reacted with the magnesium sulfate in the liquor to produce magnesium hydroxide and calcium sulfate.

Sources & evidence

ORD record: ord-e811a8dcc75748acba877c441cfddc91
Source dataset: uspto-grants-1981_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04246245

Reaction notes

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