Sentence Examples


  • Cyanmethine, C 6 H 9 N 3 (dimethyl-aminopyrimidine -2.4.
  • Pyrogallol dimethyl ether is found in beechwood tar.
  • OH NH 2 (1.3),and dimethyl meta-aminophenol,C 6 H 4.
  • Meta-aminophenol is prepared by reducing metanitrophenol, or by heating resorcin with ammonium chloride and ammonia to 200° C. Dimethyl-meta-aminophenol is prepared by heating meta-aminophenol with methyl alcohol and hydrochloric acid in an autoclave; by sulphonation of dimethylaniline, the sulphonic acid formed being finally fused with potash; or by nitrating dimethylaniline, in the presence of sulphuric acid at 0° C. In the latter case a mixture of nitro-compounds is obtained which can be separated by the addition of sodium carbonate.
  • Dimethyl-meta-aminophenol crystallizes in small prisms which melt at 87° C. It condenses with phthalic anhydride to form rhodamine, and with succinic anhydride to rhodamine S.

How would you define dimethyl? Add your definition here.

comments powered by Disqus