In an emailed statement, Health Canada said it “has been made aware of reports of people intentionally ingesting sodium nitrate or nitrite with the intent of self-harm and is taking action to address this concerning trend.”

Source: https://www.cornwallseawaynews.com/ontario-news/man-appears-in-court-after-charged-in-sale-of-lethal-powder-linked-to-ont-deaths/

Investigators allege Law, who has been charged with two counts of counselling or aiding suicide, used a number of online storefronts to sell sold sodium nitrite.

Source: https://www.cp24.com/news/11-ontario-police-services-now-involved-in-kenneth-law-case-peel-police-say-1.6444247

Police allege Law sold high-purity sodium nitrite.

Source: https://www.cbc.ca/news/canada/family-remembers-toronto-man-stephen-mitchell-1.7046663?cmp=rss