SPECTROPHOTOMETRIC DETERMINATION OF SULFATE IN PROPELLANTS AND NITROCELLULOSE

Abstract

An accurate method is proposed for the determination of sulfate in propellants and nitrocellulose that requires only 45 minutes. The sample is treated with a mixture of nitric acid, perchloric acid and magnesium nitrate, and the solution is evaporated to dryness over a Bunsen burner. The salts are heated for 5 minutes with a mixture of hydriodic, hypophosphorous and hydrochloric acids in a simplified distillation apparatus while passing nitrogen through the system, the hydrogen sulfide which results from the reduction of sulfate is absorbed into ammonium hydroxide, lead citrate is added, and the brownish-yellow lead sulfide color is measured.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1970
Accession Number
AD0711884

Entities

People

  • George Norwitz

Organizations

  • Frankford Arsenal

Tags

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Composite Propellants
  • Hydrochloric Acid
  • Hydrogen
  • Hydrogen Sulfides
  • Hydroxides
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Nitric Acid
  • Organic Chemistry
  • Perchloric Acid
  • Propellants
  • Sodium Hydroxide
  • Sulfur Compounds

Readers

  • Analytical Chemistry