Ion-exchangers, getters for vacuum tubes, petroleum sulphonates (excluding petroleum sulphonates of alkali metals, of ammonium or of ethanolamines), thiophenated sulphonic acids of oils obtained from bituminous minerals, and their salts
Ionski izmenjalci, sušilci (getterji) za vakuumske cevi, naftni sulfonati (razen naftnih sulfonatov alkalnih kovin, amonijaka ali etanolaminov), tiofenirane sulfonske kisline, iz olj pridobljenih iz bituminoznih mineralov in njihovih soli