| slovo | definícia |
anhydride
(encz) | anhydride,anhydrid n: Zdeněk Brož |
Anhydride
(gcide) | Anhydride \An*hy"dride\, n. [See Anhydrous.] (Chem.)
An oxide of a nonmetallic body or an organic radical, capable
of forming an acid by uniting with the elements of water; --
so called because it may be formed from an acid by the
abstraction of water.
[1913 Webster] |
anhydride
(wn) | anhydride
n 1: a compound formed from one or more other compounds in a
reaction resulting in removal of water |
| | podobné slovo | definícia |
phthalic anhydride
(encz) | phthalic anhydride, n: |
Anhydride
(gcide) | Anhydride \An*hy"dride\, n. [See Anhydrous.] (Chem.)
An oxide of a nonmetallic body or an organic radical, capable
of forming an acid by uniting with the elements of water; --
so called because it may be formed from an acid by the
abstraction of water.
[1913 Webster] |
Chromic anhydride
(gcide) | Chromic \Chro"mic\, a. (Chem.)
Pertaining to, or obtained from, chromium; -- said of the
compounds of chromium in which it has its higher valence.
[1913 Webster]
Chromic acid, an acid, H2CrO4, analogous to sulphuric
acid, not readily obtained in the free state, but forming
well known salts, many of which are colored pigments, as
chrome yellow, chrome red, etc.
Chromic anhydride, a brilliant red crystalline substance,
CrO3, regarded as the anhydride of chromic acid. It is
one of the most powerful oxidizers known.
[1913 Webster] |
Nitric anhydride
(gcide) | Nitric \Ni"tric\, a. [Cf. F. nitrique. See Niter.] (Chem.)
Of, pertaining to, or containing, nitrogen; specifically,
designating any one of those compounds in which, as
contrasted with nitrous compounds, the element has a higher
valence; as, nitric oxide; nitric acid.
[1913 Webster]
Nitric acid, a colorless or yellowish liquid obtained by
distilling a nitrate with sulphuric acid. It is powerfully
corrosive, being a strong acid, and in decomposition a
strong oxidizer.
Nitric anhydride, a white crystalline oxide of nitrogen
(N2O5), called nitric pentoxide, and regarded as the
anhydride of nitric acid.
Nitric oxide, a colorless poisous gas (NO) obtained by
treating nitric acid with copper. On contact with the air
or with oxygen, it becomes reddish brown from the
formation of nitrogen dioxide (NO2, also called nitric
dioxide or nitric peroxide).
[1913 Webster] |
sulphuric anhydride
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster] |
Sulphuric anhydride
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphuric \Sul*phu"ric\, a. [Cf. F. sulfurique.]
1. Of or pertaining to sulphur; as, a sulphuric smell.
[1913 Webster]
2. (Chem.) Derived from, or containing, sulphur;
specifically, designating those compounds in which the
element has a higher valence as contrasted with the
sulphurous compounds; as, sulphuric acid.
[1913 Webster]
Sulphuric acid.
(a) Sulphur trioxide (see under Sulphur); -- formerly so
called on the dualistic theory of salts. [Obs.]
(b) A heavy, corrosive, oily liquid, H2SO4, colorless
when pure, but usually yellowish or brownish, produced
by the combined action of sulphur dioxide, oxygen
(from the air), steam, and nitric fumes. It attacks
and dissolves many metals and other intractable
substances, sets free most acids from their salts, and
is used in the manufacture of hydrochloric and nitric
acids, of soda, of bleaching powders, etc. It is also
powerful dehydrating agent, having a strong affinity
for water, and eating and corroding paper, wood,
clothing, etc. It is thus used in the manufacture of
ether, of imitation parchment, and of nitroglycerin.
It is also used in etching iron, in removing iron
scale from forgings, in petroleum refining, etc., and
in general its manufacture is the most important and
fundamental of all the chemical industries. Formerly
called vitriolic acid, and now popularly vitriol,
and oil of vitriol.
Fuming sulphuric acid, or Nordhausen sulphuric acid. See
Disulphuric acid, under Disulphuric.
Sulphuric anhydride, sulphur trioxide. See under Sulphur.
Sulphuric ether, common anaesthetic ether; -- so called
because made by the catalytic action of sulphuric acid on
alcohol. See Ether, 3
(a) .
[1913 Webster] |
sulphuric chloranhydride
(gcide) | Sulphuryl \Sul"phur*yl\, n. [Sulphur + -yl.] (Chem.)
The hypothetical radical SO2; -- called also sulphon.
[1913 Webster]
Sulphuryl chloride, a chloride, pungent, fuming liquid,
SO2.Cl2, obtained by the action of phosphorus
pentachloride on sulphur trioxide. On treatment with water
it decomposes into sulphuric and hydrochloric acids, and
is hence called also sulphuric chloranhydride.
[1913 Webster] |
sulphurous anhydride
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphurous \Sul"phur*ous\, a. [L. sulphurosus, sulfurosus: cf.
F. sulfureux.]
1. Of or pertaining to sulphur.
[1913 Webster]
2. (Chem.)
(a) Derived from, or containing, sulphur; specifically,
designating those compounds in which the element has a
lower valence as contrasted with the sulphuric
compounds.
(b) Having the characteristic odor of sulphur dioxide, or
of hydrogen sulphide, or of other sulphur compounds.
[1913 Webster]
Sulphurous acid.
(a) Sulphur dioxide. See under Sulphur. [Obs.]
(b) An acid, H2SO3, not known in the free state except
as a solution of sulphur dioxide in water, but forming
a well-known series of salts (the sulphites).
Sulphurous anhydride (Chem.), sulphur dioxide. See under
Sulphur.
[1913 Webster] |
Sulphurous anhydride
(gcide) | Sulphur \Sul"phur\, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
[1913 Webster]
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
[1913 Webster]
2. (Zool.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierinae; as, the clouded
sulphur (Eurymus philodice syn. Colias philodice),
which is the common yellow butterfly of the Eastern United
States.
[1913 Webster]
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
crystalline modification.
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
famous nostrum.
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly {sulphurous
acid}.
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
sulphuric acid.
Sulphur whale. (Zool.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Lycopodium.
[1913 Webster]Sulphurous \Sul"phur*ous\, a. [L. sulphurosus, sulfurosus: cf.
F. sulfureux.]
1. Of or pertaining to sulphur.
[1913 Webster]
2. (Chem.)
(a) Derived from, or containing, sulphur; specifically,
designating those compounds in which the element has a
lower valence as contrasted with the sulphuric
compounds.
(b) Having the characteristic odor of sulphur dioxide, or
of hydrogen sulphide, or of other sulphur compounds.
[1913 Webster]
Sulphurous acid.
(a) Sulphur dioxide. See under Sulphur. [Obs.]
(b) An acid, H2SO3, not known in the free state except
as a solution of sulphur dioxide in water, but forming
a well-known series of salts (the sulphites).
Sulphurous anhydride (Chem.), sulphur dioxide. See under
Sulphur.
[1913 Webster] |
acetic anhydride
(wn) | acetic anhydride
n 1: a compound that is needed in order to refine opium into
heroin |
acid anhydrides
(wn) | acid anhydrides
n 1: organic compounds that react with water to form an acid
[syn: acyl anhydrides, acid anhydrides] |
acyl anhydrides
(wn) | acyl anhydrides
n 1: organic compounds that react with water to form an acid
[syn: acyl anhydrides, acid anhydrides] |
arsenous anhydride
(wn) | arsenous anhydride
n 1: a white powdered poisonous trioxide of arsenic; used in
manufacturing glass and as a pesticide (rat poison) and
weed killer [syn: arsenic, arsenic trioxide, {arsenous
anhydride}, arsenous oxide, white arsenic, ratsbane] |
phthalic anhydride
(wn) | phthalic anhydride
n 1: a white cyclic anhydride |
|