The German chemical and consumer goods firm, Henkel, posted on Monday a drop in full-year sales, as foreign exchange rates and the sell off of its Russian business negatively impacted its balance sheet. For the 12-month period, Henkel recorded adjusted operating income at €2.556 million ($2.77 million), higher than €2.319 billion last year, mainly due to positive selling price developments. Excluding items, however, return on sales or adjusted EBIT margin was 11.9%, up from previous year’s 10.4%. Group sales amounted €21.514 billion, down 3.9% from prior year. Foreign exchange effects negative…