Potash
['pɒtæʃ] or ['pɑtæʃ]
Definition
(noun.) a potassium compound often used in agriculture and industry.
Inputed by Eunice--From WordNet
Definition
(n.) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash.
(n.) The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye), or as a white crystalline (pearlash).
Editor: Vlad
Synonyms and Synonymous
n. Potassa, protoxide of potassium.
Inputed by Bruno
Definition
n. a powerful alkali obtained from the ashes of plants—also Potass′.—n. Pot′ash-wa′ter a kind of aerated water which when of full medicinal strength contains fifteen grains of the bicarbonate of potash in each bottle—usually much less is put in.
Typed by Felix
Examples
- Commercial fertilizers generally contain nitrogen, phosphorus, and potash in amounts varying with the requirements of the soil. Bertha M. Clark. General Science.
- The whitening is done by boiling the pins in a large copper kettle, which also contains layers of grained tin and a solution of argol or bitartrate of potash. Various. The Wonder Book of Knowledge.
- From such deposits, potash is obtained. Bertha M. Clark. General Science.
- They discovered many new substances, such as alcohol,[334] potash, nitrate of silver, corrosive sublimate, and nitric and sulphuric acid. H. G. Wells. The Outline of History_Being a Plain History of Life and Mankind.
- Joseph Dixon, in 1854, was the first to use organic matter and bichromate of potash upon stone to produce a photo-lithograph. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- Another probable source of potash is seaweed. Bertha M. Clark. General Science.
- Most fats contain a substance of an acid nature, and are decomposed by the action of bases such as caustic soda and caustic potash. Bertha M. Clark. General Science.
- But the amount of potash thus obtained is far too limited to supply the needs of agriculture; and to-day the main sources of potash are the vast deposits of potassium salts found in Prussia. Bertha M. Clark. General Science.
- Water cultures of buckwheat: 1, with all the food elements; 2, without potash; 3, without nitrates. Bertha M. Clark. General Science.
- Gunpowder consists of about 75 parts of saltpetre (nitrate of potash), 15 of charcoal, and 10 of sulphur, the proportions varying somewhat with the use to which it is to be applied. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- The other important ingredient of most fertilizers is potash. Bertha M. Clark. General Science.
- The sea is a vast reservoir of potash, and seaweed, especially the giant kelp, absorbs large quantities of this potash. Bertha M. Clark. General Science.
- Plants need other foods besides nitrogen, and they exhaust the soil not only of nitrogen, but also of phosphorus and potash, since large quantities of these are necessary for plant life. Bertha M. Clark. General Science.
- Wood ashes are rich in potash and are a valuable addition to the soil. Bertha M. Clark. General Science.
- Mungo Ponton applies Bichromate of Potash in Photography. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
Inputed by Julio