Differentiation from Tars
Since 1996, the production of cosmetic shampoos containing coal tar is prohibited in EC because of the toxicity of tars. ICHTHYOL® PALE is recommended as alternative for coal tar.
There are still some reports in the scientific literature in which sulfonated shale oils, such as ICHTHYOL® PALE, are falsely grouped with tars because of their related efficacy and characteristic odour. ICHTHYOL® PALE and tars differ in terms of.
|ICHTHYOL® PALE||COAL TAR|
|Starting material:||Starting material:|
|oil shale from marine phytoplankton||Coal from terrestrial plants|
|Dry distillation: about 450°C||Dry distillation: about 1000°C|
|Intermediary product: Crude Shale Oil|
|Active ingredient: sulfonated shale oil||Active ingredient: coal tar|
|- salts in aqueous solution||- mixture of hydrocarbons|
|- surfactant properties||and phenols|
|- water-soluble||- lipophilic; not water soluble|
|- sulphur-rich||- sulphur-poor|
|High purity with regard to PAH||Severely contaminated with PAH|
|(< 0.001 ppm benzo[a]pyrene)||(> 5000 ppm benzo[a]pyrene)|
|not mutagenic, not carcinogenic||indications of mutagenicity, cancerogenicity|