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A. E. Chichibabin's “Fundamental Principles of Organic Chemistry” Volume I

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Summary

  1. 1.

    The existence oT a low-temperature modification of ammonium nitrate at below −170° has been confirmed by microcinematographic, X -ray structure, and thermographic analysis; it may be suitably named Crystalline Modification VII.

  2. 2.

    When fused ammonium nitrate is cooled at a rate of more than 2° per minute, metastable transformation of Modification II to Modification IV occurs, but the reverse change is not observed when the temperature is raised

  3. 3.

    Ammonium nitrate quenched at −20° consists mainly of Modifications V and IV. As can be seen from cooling curves plotted for different cooling rates, Modification III will be absent. Ammonium nitrate quenched at −196° consists of Modifications IV and VII.

  4. 4.

    h e have not detected the transformation of ammonium nitrate in the region − 50° to − 65°, which has been found by some workers.

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Authors
  1. I. L. Knunyants
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Knunyants, I.L. A. E. Chichibabin's “Fundamental Principles of Organic Chemistry” Volume I. Russ Chem Bull 3, 165–174 (1954). https://doi.org/10.1007/BF01195441

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  • DOI: https://doi.org/10.1007/BF01195441

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