Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
The Reaction of Mono-, Di-, and Trisodium Orthophosphate in a Mixed Solution of Acetic Acid and Acetic Anhydride
Makoto WatanabeTetsushi Senda
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1972 Volume 45 Issue 7 Pages 2111-2113

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Abstract

Mono-, di-, or trisodium orthophosphate was heated at 100°C in an equivolume mixture of acetic acid and its anhydride. By X-ray diffractometry and paper chromatography, the products from these three sodium salts of orthophosphate were found to be sodium trimetaphosphate. At the end of the 30-hr reaction period, the purity of the trimetaphosphate was higher than 90%. The ease of formation of the trimetaphosphate ring under various conditions was shown, and the stability of the ring was discussed on the basis of the strain of the bonding angle.

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