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

HRID 2166685Notes

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-ca017601fbf542e685a7c40621f5abe6
Source dataset: uspto-grants-1983_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04388283

Reaction notes

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