The article isn't really clear about what this mineral was purchased and marketed for. Was it curing meat specifically? In which case, how does this company's mineral differ from any other? Wouldn't it be the fault of the people mis handling it? What made this particular company's mineral especially dangerous?
The article says in the first sentence that the website was selling toxic compounds to people at risk of self harm, and explains after that "The probe is part of international inquiries sparked by the arrest of Canadian Kenneth Law, who has been charged with two counts of counselling and aiding suicide."