Synthesis and Physical Properties of Normal Higher Primary Alcohols. IV. Thermal and X-Ray Studies on the Polymorphism of the Alcohols of Even Carbon Numbers from Dodecanol to Tetratriacontanol
スポンサーリンク
概要
- 論文の詳細を見る
1. Determination of the melting points and transition points of the even carbon numbered alcohols from C<SUB>12</SUB> to C<SUB>34</SUB> was made by thermal analysis. The transition points of the alcohols above C<SUB>18</SUB>, except C<SUB>22</SUB>, have never been reported.<BR>2. The reversible transition sets in at C<SUB>14</SUB> and terminates at C<SUB>26</SUB>. The transition of C<SUB>28</SUB> and C<SUB>32</SUB> is irreversible, appearing only on cooling and both transitions disappear at C<SUB>34</SUB>. Probably the pure sample of dodecanol may indicate no transition in any methods of measurements.<BR>3. Properties of the a forms gradually change with increasing chain lengths.<BR>4. The β to γ and α to γ transformations were examined by X-ray pattern measurements and the results were discussed.<BR>5. Transition points and X-ray spacings may be reliable criteria of purity of higher alcohols, and probably of some other long chain compounds.
- 社団法人 日本化学会の論文
著者
-
Watanabe A.
Department of Biology, Faculty of science, Yamagata University
-
Watanabe Akira
Department of Applied Chemistry Himeji Technical College
関連論文
- ROLE OF THE LAYERED EGG-JELLY IN THE INTERNAL FERTILIZATION OF NEWT, Cynops pyrrhogaster(Developmental Biology)(Proceeding of the Seventy-Third Annual Meeting of the Zoological Society of Japan)
- THE EFFECT OF PLANFORM AND CROSS-SECTIONAL SHAPE ON ACCURACY OF DISCHARGE MEASUREMENT USING FLOATS
- Synthesis and Physical Properties of Normal Higher Primary Alcohols. IV. Thermal and X-Ray Studies on the Polymorphism of the Alcohols of Even Carbon Numbers from Dodecanol to Tetratriacontanol
- Synthesis and Physical Properties of Normal Higher Primary Alcohols, III. Synthesis of Normal Higher Primary Alcohols of Even Carbon Numbers from Dodecanol to Hexatriacontanol