Study of formation conditions of sodium sesquicarbonate in H3PO4–Na2CO3–H2O system

Study of formation conditions of sodium sesquicarbonate in H3PO4–Na2CO3–H2O system Physicochemical transformations were studied in the interaction of powdered Na2CO3 with an orthophosphoric acid–solution at Na2CO3/H3PO4 = 4.0–10.5 and H2O/Na2CO3 = 2.0–5.0 molar ratios providing synthesis of a powder-like product with a moisture content not exceeding 10 wt %, which is of interest as a builder of synthetic detergents. The chemical and phase composition of synthesis products was analyzed and it was shown that the main crystalline phases are Na2CO3∙NaHCO3∙2H2O, Na2CO3∙H2O, NaHCO3, Na3PO4∙nH2O (n = 8–12), and Na2HPO4∙mH2O (m = 2–12). It was found that the Na2CO3/H3PO4 and H2O/Na2CO3 molar ratios affect the yield of sodium sesquicarbonate Na2CO3∙NaHCO2∙2H2O whose formation is due to the interaction of Na2CO3∙H2O, NaHCO3, and H2O. It is noted that water introduced into the Na2CO3–H3PO4–H2O system with the orthophosphoric acid solution is mostly expended for the formation of crystal hydrates of carbonate- and phosphate-containing compounds, and just his circumstance provides that powder-like products with prescribed moisture content are formed. Russian Journal of Applied Chemistry Springer Journals

Study of formation conditions of sodium sesquicarbonate in H3PO4–Na2CO3–H2O system

Loading next page...
Pleiades Publishing
Copyright © 2015 by Pleiades Publishing, Ltd.
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial