252 / | HD | COMPOSITIONS |
500 | DF | ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6} |
518.1 | DF | .~ Metal compound containing {16} |
519.3 | DF | .~.~ With organic compound {3} |
519.33 | .~.~.~ The organic compound is a polymer {1} | |
519.34 | DF | .~.~.~.~> The metal compound contains halogen, sulfur, selenium, phosphorus, arsenic, boron, or nitrogen |