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Rubin numbers

  • R. S. Subramhanya
  • K. S. G. Doss
  • B. Sanjiva Rao
Article
  • 12 Downloads

Summary

The best conditions for determing rubin numbers have been worked out. The rubin number is defined as the number of milligrams of the protective colloid which when present in 10 c.c. of a 0·002% congorubin solution of pH 5·2 and electrolyte concentration of 0·02 N produces 26.5% blue colour on addition of 1 c.c. of 10% solution sodium chloride. The rubin number of a protective colloid can be accurately determined with the help of an Hellige colorimeter employing Gillespie’s technique.

Keywords

Blue Colour Sodium Chloride Solution Quinhydrone Solution Sodium Chloride Protective Colloid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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    Kolmer and BoernerApproved Laboratory Technique, 1938, 306.Google Scholar
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    ZsigmondyAnal. Chem., 1901,40, 698.Google Scholar
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    WeiserInorganie Colloid Chemistry,1, 22, 1933 Edn.Google Scholar
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    Wo. OstwaldKolloid Chem. Beihefta, 1919,10, 234.Google Scholar
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    DossKolloid. Z., 1938,84, 138.CrossRefGoogle Scholar
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    GillespieHydrogen Ions, Britton, 212, 1929 Edn,Google Scholar
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    LüersKolloid. Z., 1920,123, 27, 36.Google Scholar

Copyright information

© Indian Academy of Sciences 1947

Authors and Affiliations

  • R. S. Subramhanya
    • 1
  • K. S. G. Doss
    • 2
  • B. Sanjiva Rao
    • 3
  1. 1.Indian Institute of SeienceBangalore
  2. 2.Imperial Institute of Sugar TechnologyCawnpore
  3. 3.Central CollegeBangalore

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