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Sani-Flush was a brand of crystal toilet bowl cleaner formerly produced by Reckitt Benckiser. Its main ingredient was sodium bisulfate; it also contained sodium carbonate as well as sodium lauryl sulfate, talc, sodium chloride, fragrance and dye. When sodium bisulfate is mixed with water, a highly-corrosive sulphuric acid is produced, which dissolves accumulated minerals such as iron, magnesium and calcium from the bowl. Due to environmental concerns, the product has been discontinued; by 2013 its last original US trademark was cancelled or allowed to expire.〔US trademark search on http://tmsearch.uspto.gov shows all marks expired or held by unrelated, non-manufacturing entities.〕 ==History== Sani-Flush was introduced by the Hygenic Products Company of Chicago, Illinois in 1911 as a toilet bowl cleaner; since 1922 it had also been promoted for flushing "rust, scale and sludge" from automobile radiators. Advertisements from the 1920s onward depicted a housewife in an apron using the product to disinfect the bowl and remove odours; it "cleans closet bowls without scouring" with "no drudgery whatsovever". The brand was sold to American Home Products; that company's subsidiary Boyle-Midway was sold to Reckitt & Colman (now Reckitt Benckiser) in 1990. The primary direct competitor to Sani-Flush was Vanish, a brand of toilet cleaning crystals marketed in the US by the SC Johnson Company. Widely stocked in grocery and hardware stores, the product was a well-known household name and occasionally mentioned in children's jokes like "If Santa gets stuck in your chimney, use Santa Flush" and the apocryphal advertising slogan "Sani-Flush, Sani-Flush, cleans your teeth without a brush. All you do is pour it on; one, two, three, your teeth are gone." A strongly corrosive product, Sani-Flush was kept out of the reach of children as sodium bisulfate mixed with water produces sulphuric acid. Mixing Sani-Flush (as acid) with a caustic alkaline drain cleaner (such as Drāno or Liquid-Plumr) can be deadly.〔In (Goins v. Clorox Company, (926 F2d 559) ), the estate of an end user who poured Drano (by Bristol-Myers), Liquid Plumr (by Clorox) and Sani-Flush (by Boyle-Midway) into the same clogged drain unsuccessfully attempted to sue Clorox Corporation and Boyle-Midway, but failed to prove the warnings on the products were inadequate.〕 Likewise, mixing Sani-Flush with bleach releases poisonous gas; on April 8, 1964 a Winn-Dixie food store in St. Petersburg, Florida was evacuated and eleven people hospitalised.〔(11 persons overcome by toxic gas fumes ), St. Petersburg Times - Apr 9, 1964〕 Sani-Flush is mentioned several times in William S. Burroughs' novel ''Naked Lunch'', where the product is used to "cut" (dilute) cocaine or where it is substituted for morphine by a pharmacist. The original product quietly disappeared from store shelves circa-2009; the US trademark was cancelled in 2013. Unlike rival Vanish, whose mark now serves to market other formats of toilet cleaner from the same manufacturer, the Sani-Flush name in the US was simply abandoned. "Sani-Flush"〔http://www.cipo.ic.gc.ca/app/opic-cipo/trdmrks/srch/vwTrdmrk.do?lang=eng&fileNumber=0076212〕 and "Sani-Flush Puck"〔http://www.cipo.ic.gc.ca/app/opic-cipo/trdmrks/srch/vwTrdmrk.do?lang=eng&fileNumber=0574636〕 retain their registered trademark status in Canada, but refer to a different toilet cleaner.〔(SANI-FLUSH® Auto - Regular with Lysol® ) retains the historic trademark in Canada, but differs in chemical composition and application.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sani Flush」の詳細全文を読む スポンサード リンク
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