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2. Sodium metabisulfite - Wikipedia

   en.wikipedia.org/wiki/Sodium_metabisulfite

   Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na 2 S 2 O 5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant, and preservative agent. [2] When dissolved in water it forms ...

3. Tree stump - Wikipedia

   en.wikipedia.org/wiki/Tree_stump

   A common method for stump removal is to use one of the many chemical stump removal products, so long as immediate results are not needed. These stump removers are mostly made of potassium nitrate (KNO 3) and act by rapidly increasing the decay of the stump. (The chemical provides nitrogen, a limiting nutrient, to tree-decaying fungi.

4. Ammonium sulfamate - Wikipedia

   en.wikipedia.org/wiki/Ammonium_sulfamate

   Ammonium sulfamate is considered to be particularly useful in controlling tough woody weeds, tree stumps and brambles.. Ammonium sulfamate has been successfully used in several major UK projects by organisations like the British Trust for Conservation Volunteers, English Heritage, the National Trust, and various railway, canal and waterways authorities.

5. Potassium nitrate - Wikipedia

   en.wikipedia.org/wiki/Potassium_nitrate

   Potassium nitrate is a chemical compound with a sharp, salty, bitter taste and the chemical formula K N O 3. It is a potassium salt of nitric acid. This salt consists of potassium cations K + and nitrate anions NO − 3, and is therefore an alkali metal nitrate. It occurs in nature as a mineral, niter (or nitre outside the US). [5]

6. Rocket candy - Wikipedia

   en.wikipedia.org/wiki/Rocket_candy

   Potassium nitrate is most commonly found in tree stump remover. Additives can be many different substances, and either act as catalysts or enhance the aesthetics of the liftoff or flight. A traditional sugar propellant formulation is typically prepared in a 65:35 (13:7) oxidizer to fuel ratio. [1]

7. Heterobasidion annosum - Wikipedia

   en.wikipedia.org/wiki/Heterobasidion_annosum

   Chemical methods include prophylactic stump treatment with a solution of urea immediately after the infection. This protects the stump by hydrolysis of the compound by the enzyme urease in the living wood tissue, which results in formation of ammonia and a rise in pH to a level that H. annosum at which mycelia are unable to survive. Biological ...