US PATENT SUBCLASS 423 / 372
.~.~.~ Hydrogen cyanide


Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

351  DF  NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID) {5}
364  DF  .~ Carbon containing {7}
371  DF  .~.~ Ternary compound {4}
372.~.~.~ Hydrogen cyanide {4}
373  DF  .~.~.~.~> Employing formamide or formate as reactant
374  DF  .~.~.~.~> Utilizing nitric oxide or free nitrogen as reactant
375  DF  .~.~.~.~> Employing ammonia as reactant {1}
377  DF  .~.~.~.~> Utilizing metal cyanide as reactant


DEFINITION

Classification: 423/372

(under subclass 371) Products or processes in which the product is hydrogen cyanide (HCN), which may also be designated as hydrocyanic acid, prussic acid, or formonitrile.