Disodium terephthalate → Calcium terephthalate

HRID 620000

Reaction equation

[C:1]([O-:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=1.[Na+].[Na+].[Cl-].[Ca+2:16].[Cl-]>>[C:1]([O-:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=[O:7])=[CH:4][CH:3]=1.[Ca+2:16]

Participants

Reactant 2

HCID 82305Disodium terephthalate

HCID 5284359Calcium Chloride

Product 1

HCID 167516Calcium terephthalate

Procedure

A 5% by weight aqueous solution of sodium terephthalate was added to a 10% by weight aqueous solution of calcium chloride to form a white precipitate of calcium terephthalate. The calcium terephthalate precipitate was separated, washed with water and then heated at 200° C. to form an anhydrous salt. The anhydrous calcium terephthalate was pulverized in a ball mill and dispersed in ethylene glycol to form a slurry. Subsequent classification gave a glycol slurry of calcium terephthalate having a predetermined particle diameter.

Sources & evidence

ORD record: ord-1d9b06b6e0ea4e6f95684d14bef52b84
Source dataset: uspto-grants-1989_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04818581

Linked notes

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