| slovo | definícia |
potash
(encz) | potash,potaš n: [chem.] uhličitan draselný Nijel |
Potash
(gcide) | Potash \Pot"ash`\, n. [Pot + ash.] (Chem.)
(a) The hydroxide of potassium hydrate, a hard white brittle
substance, KOH, having strong caustic and alkaline
properties; -- hence called also caustic potash.
(b) The impure potassium carbonate obtained by leaching wood
ashes, either as a strong solution (lye), or as a white
crystalline (pearlash).
[1913 Webster] |
potash
(wn) | potash
n 1: a potassium compound often used in agriculture and industry
[syn: potash, caustic potash, potassium hydroxide] |
| | podobné slovo | definícia |
caustic potash
(encz) | caustic potash, n: |
permanganate of potash
(encz) | permanganate of potash, n: |
potash
(encz) | potash,potaš n: [chem.] uhličitan draselný Nijel |
potash alum
(encz) | potash alum, n: |
yellow prussiate of potash
(encz) | yellow prussiate of potash, n: |
caustic potash
(gcide) | Potash \Pot"ash`\, n. [Pot + ash.] (Chem.)
(a) The hydroxide of potassium hydrate, a hard white brittle
substance, KOH, having strong caustic and alkaline
properties; -- hence called also caustic potash.
(b) The impure potassium carbonate obtained by leaching wood
ashes, either as a strong solution (lye), or as a white
crystalline (pearlash).
[1913 Webster]Potassa \Po*tas"sa\, n. [NL., fr. E. potash.] (Chem.)
(a) Potassium oxide. [Obs.]
(b) Potassium hydroxide, commonly called caustic potash.
[1913 Webster]Caustic \Caus"tic\, Caustical \Caus"tic*al\, a. [L. caustucs,
Ge. ?, fr. ? to burn. Cf. Calm, Ink.]
1. Capable of destroying the texture of anything or eating
away its substance by chemical action; burning; corrosive;
searing.
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2. Severe; satirical; sharp; as, a caustic remark.
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Caustic curve (Optics), a curve to which the ray of light,
reflected or refracted by another curve, are tangents, the
reflecting or refracting curve and the luminous point
being in one plane.
Caustic lime. See under Lime.
Caustic potash, Caustic soda (Chem.), the solid
hydroxides potash, KOH, and soda, NaOH, or solutions
of the same.
Caustic silver, nitrate of silver, lunar caustic.
Caustic surface (Optics), a surface to which rays reflected
or refracted by another surface are tangents. Caustic
curves and surfaces are called catacaustic when formed by
reflection, and diacaustic when formed by refraction.
Syn: Stinging; cutting; pungent; searching.
[1913 Webster] |
Caustic potash
(gcide) | Potash \Pot"ash`\, n. [Pot + ash.] (Chem.)
(a) The hydroxide of potassium hydrate, a hard white brittle
substance, KOH, having strong caustic and alkaline
properties; -- hence called also caustic potash.
(b) The impure potassium carbonate obtained by leaching wood
ashes, either as a strong solution (lye), or as a white
crystalline (pearlash).
[1913 Webster]Potassa \Po*tas"sa\, n. [NL., fr. E. potash.] (Chem.)
(a) Potassium oxide. [Obs.]
(b) Potassium hydroxide, commonly called caustic potash.
[1913 Webster]Caustic \Caus"tic\, Caustical \Caus"tic*al\, a. [L. caustucs,
Ge. ?, fr. ? to burn. Cf. Calm, Ink.]
1. Capable of destroying the texture of anything or eating
away its substance by chemical action; burning; corrosive;
searing.
[1913 Webster]
2. Severe; satirical; sharp; as, a caustic remark.
[1913 Webster]
Caustic curve (Optics), a curve to which the ray of light,
reflected or refracted by another curve, are tangents, the
reflecting or refracting curve and the luminous point
being in one plane.
Caustic lime. See under Lime.
Caustic potash, Caustic soda (Chem.), the solid
hydroxides potash, KOH, and soda, NaOH, or solutions
of the same.
Caustic silver, nitrate of silver, lunar caustic.
Caustic surface (Optics), a surface to which rays reflected
or refracted by another surface are tangents. Caustic
curves and surfaces are called catacaustic when formed by
reflection, and diacaustic when formed by refraction.
Syn: Stinging; cutting; pungent; searching.
[1913 Webster] |
Potash soap
(gcide) | Soap \Soap\, n. [OE. sope, AS. s[=a]pe; akin to D. zeep, G.
seife, OHG. seifa, Icel. s[=a]pa, Sw. s?pa, Dan. s?be, and
perhaps to AS. s[imac]pan to drip, MHG. s[imac]fen, and L.
sebum tallow. Cf. Saponaceous.]
A substance which dissolves in water, thus forming a lather,
and is used as a cleansing agent. Soap is produced by
combining fats or oils with alkalies or alkaline earths,
usually by boiling, and consists of salts of sodium,
potassium, etc., with the fatty acids (oleic, stearic,
palmitic, etc.). See the Note below, and cf.
Saponification. By extension, any compound of similar
composition or properties, whether used as a cleaning agent
or not.
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Note: In general, soaps are of two classes, hard and soft.
Calcium, magnesium, lead, etc., form soaps, but they
are insoluble and useless.
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The purifying action of soap depends upon the
fact that it is decomposed by a large quantity of
water into free alkali and an insoluble acid
salt. The first of these takes away the fatty
dirt on washing, and the latter forms the soap
lather which envelops the greasy matter and thus
tends to remove it. --Roscoe &
Schorlemmer.
[1913 Webster]
Castile soap, a fine-grained hard soap, white or mottled,
made of olive oil and soda; -- called also {Marseilles
soap} or Venetian soap.
Hard soap, any one of a great variety of soaps, of
different ingredients and color, which are hard and
compact. All solid soaps are of this class.
Lead soap, an insoluble, white, pliable soap made by
saponifying an oil (olive oil) with lead oxide; -- used
externally in medicine. Called also lead plaster,
diachylon, etc.
Marine soap. See under Marine.
Pills of soap (Med.), pills containing soap and opium.
Potash soap, any soap made with potash, esp. the soft
soaps, and a hard soap made from potash and castor oil.
Pumice soap, any hard soap charged with a gritty powder, as
silica, alumina, powdered pumice, etc., which assists
mechanically in the removal of dirt.
Resin soap, a yellow soap containing resin, -- used in
bleaching.
Silicated soap, a cheap soap containing water glass (sodium
silicate).
Soap bark. (Bot.) See Quillaia bark.
Soap bubble, a hollow iridescent globe, formed by blowing a
film of soap suds from a pipe; figuratively, something
attractive, but extremely unsubstantial.
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This soap bubble of the metaphysicians. --J. C.
Shairp.
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Soap cerate, a cerate formed of soap, olive oil, white wax,
and the subacetate of lead, sometimes used as an
application to allay inflammation.
Soap fat, the refuse fat of kitchens, slaughter houses,
etc., used in making soap.
Soap liniment (Med.), a liniment containing soap, camphor,
and alcohol.
Soap nut, the hard kernel or seed of the fruit of the
soapberry tree, -- used for making beads, buttons, etc.
Soap plant (Bot.), one of several plants used in the place
of soap, as the Chlorogalum pomeridianum, a California
plant, the bulb of which, when stripped of its husk and
rubbed on wet clothes, makes a thick lather, and smells
not unlike new brown soap. It is called also soap apple,
soap bulb, and soap weed.
Soap tree. (Bot.) Same as Soapberry tree.
Soda soap, a soap containing a sodium salt. The soda soaps
are all hard soaps.
Soft soap, a soap of a gray or brownish yellow color, and
of a slimy, jellylike consistence, made from potash or the
lye from wood ashes. It is strongly alkaline and often
contains glycerin, and is used in scouring wood, in
cleansing linen, in dyehouses, etc. Figuratively,
flattery; wheedling; blarney. [Colloq.]
Toilet soap, hard soap for the toilet, usually colored and
perfumed.
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Potashes
(gcide) | Potashes \Pot"ash`es\, n. pl. (Chem.)
Potash. [Obs.]
[1913 Webster] |
Red prussiate of potash
(gcide) | Prussiate \Prus"si*ate\, n. [Cf. F. prussiate.] (Chem.)
A salt of prussic acid; a cyanide.
[1913 Webster]
Red prussiate of potash. See Potassium ferricyanide,
under Ferricyanide.
Yellow prussiate of potash. See Potassium ferrocyanide,
under Ferrocyanide.
[1913 Webster] |
Yellow prussiate of potash
(gcide) | Prussiate \Prus"si*ate\, n. [Cf. F. prussiate.] (Chem.)
A salt of prussic acid; a cyanide.
[1913 Webster]
Red prussiate of potash. See Potassium ferricyanide,
under Ferricyanide.
Yellow prussiate of potash. See Potassium ferrocyanide,
under Ferrocyanide.
[1913 Webster] |
caustic potash
(wn) | caustic potash
n 1: a potassium compound often used in agriculture and industry
[syn: potash, caustic potash, potassium hydroxide] |
permanganate of potash
(wn) | permanganate of potash
n 1: a poisonous salt that forms dark purple crystals and is
purple-red when dissolved in water; used as an oxidizing
and bleaching agent and as a disinfectant and antiseptic
[syn: potassium permanganate, permanganate of potash] |
potash
(wn) | potash
n 1: a potassium compound often used in agriculture and industry
[syn: potash, caustic potash, potassium hydroxide] |
potash alum
(wn) | potash alum
n 1: a white crystalline double sulfate of aluminum: the
potassium double sulfate of aluminum [syn: alum,
potassium alum, potash alum] |
potash muriate
(wn) | potash muriate
n 1: salt of potassium (KCl) (trade names K-Dur 20, Kaochlor and
K-lor and Klorvess and K-lyte); taken in tablet form to
treat potassium deficiency [syn: potassium chloride,
potassium muriate, potash muriate, K-Dur 20,
Kaochlor, K-lor, Klorvess, K-lyte] |
yellow prussiate of potash
(wn) | yellow prussiate of potash
n 1: a cyanide compound that is prepared by the reaction of
potassium cyanide with ferrous salts; commonly used by
gardeners [syn: potassium ferrocyanide, {yellow prussiate
of potash}] |
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