Sulfuric Acid → Calcium Sulfate

HRID 436908

Reaction equation

HRID 436908 reaction equation
[O:1]1[CH:6]([C:7]([O-:9])=[O:8])[CH:2]1[C:3]([O-:5])=[O:4].[Ca+2:10].[S:11](=[O:15])(=[O:14])([OH:13])[OH:12]>C(O)(=O)C>[S:11]([O-:15])([O-:14])(=[O:13])=[O:12].[Ca+2:10].[O:1]1[CH:6]([C:7]([OH:9])=[O:8])[CH:2]1[C:3]([OH:5])=[O:4]

Participants

5

Reactant 2

HCID 1118Sulfuric AcidHCID 13538056Calcium epoxysuccinate

Product 2

HCID 24497Calcium SulfateHCID 86022Epoxysuccinic acid

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

The acid calcium epoxysuccinate obtained by the epoxidation was reacted in acetic acid with the aid of concentrated sulphuric acid to form calcium sulphate and epoxysuccinic acid. For this purpose, 50 g. of acid calcium epoxysuccinate, having a calcium content of 11.9% by weight, and 15 g. of concentrated sulphuric acid were introduced, with stirring, into 300 ml. of glacial acetic acid. The suspension was kept at 20° C. for 2 hours with stirring, and then heated to 70° C. After 2 more hours the reaction was complete and the calcium sulphate was filtered off. The calcium sulphate was washed three times with 30 ml. of glacial acetic acid.

Sources & evidence

ORD record
ord-e9253d9b25764ea1819d61316db41407
Source dataset
uspto-grants-1977_06
Patent number
US04028407

Linked notes

Loading…