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Water Chemicals Codex (1982) / Chapter Skim
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Sodium Hydroxide, Caustic Soda
Pages 47-48

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From page 47...
... Purity Requirements: The RMIC are based on a maximum dosage of 100 mg of sodium hydroxide/liter of water and are to be compared to impurity concentrations obtained by using sample procedures described in this monograph. If the actual dosage is other than 100 mg/liter, the user is cautioned to consult Table 2 for appropriate RMIC values.
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From page 48...
... Gently heat the solution to reduce the volume below 100 ml, making certain that it does not boil. Quantitively transfer to a 100-ml acid-washed volumetric flask and make to volume with deionized distilled water.
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Key Terms

  • quantitively transfer
  • sample procedures
  • impurity concentrations
  • health association
  • concentrations obtained

  • sample analyses
  • hydroxide solution
  • volumetric flask
  • using sample
  • american water

  • standard methods
  • deionized distilled
  • mercury bulk
  • alkali equivalent
  • bulk sample

  • maximum dosage
  • procedures described
  • distilled water
  • sodium oxide
  • volume below

  • appropriate rmic
  • add hydroxylamine
  • consult table
  • actual dosage
  • hydroxylamine hydrochloride

  • reagent blank
  • mercury section
  • american public
  • rmic values
  • public health


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