The solution of the gas in water is used under the name of sulphurous acid.
Sulphurous acid may have either of the constitutions
It is decomposed by water into hydrofluoric and sulphurous acids.
Sulphurous springs exist in the vicinity.
The hot springs, among which those of Bagneres de Luchon and Eaux-Chaudes may be mentioned, are sulphurous and mostly situated high, near the contact of the granite with the stratified rocks.
Below Mosul, for some distance, occur sulphurous and bituminous springs.
There are various haloid derivatives of sulphurous acid.
Water decomposes it into hydrochloric and sulphurous acids.
It is readily decomposed by water with formation of sulphurous, sulphuric and thiosulphuric acids, with simultaneous liberation of sulphur.
The fouling of the air that results from the steam-engine, owing to the production of carbonic acid gas and of sulphurous fumes and aqueous vapour, is well known, and its use is now practically abandoned for underground working.
Numerous mineral springs (chalybeate and sulphurous) exist both north and south of the Caucasus ranges, e.g.
Water, often saline or sulphurous, is also found in these porous rocks and replaces the oil as the latter is withdrawn.
And of iodine and sulphurous acid to the estimation of copper and many other substances by Robert Wilhelm Bunsen, marks an epoch in the early history of volumetric analysis.
With iodine compounds, iodic acid is likely to be formed, and hence the solution must be reduced with sulphurous acid before precipitation with silver nitrate.
There are hot sulphurous springs in the town, which has also a fine climate; and many of the wealthy families from Malaga reside here in summer.
In one of the caves on the south coast the heat is still great, and on the eastern shore of the harbour there are hot sulphurous springs.
Sulphurous acid reduces it to the corresponding dihydroxy compound.
Of the many interesting caverns in Transylvania the most remarkable are the sulphurous Biidos in the county of Haromszek, the Almas to the south of Udvarhely and the brook-traversed rocky caverns of Csetate-Boli, Pestere and Ponor in the southern mountains of Hunyad county.
In opposition to stannous chloride, even sulphurous acid (solution) behaves as an oxidizing agent.
Amongst its numerous mineral springs, the most important are those of Mehadia, with sulphurous waters, which were already known in the Roman period as the Thermae Herculis.
Tin dissolves readily in strong hot hydrochloric acid as SnC12; aqueous sulphuric acid does not act on it appreciably in the cold; at 150° it attacks it more or less quickly, according to the strength of the acid, with evolution of sulphuretted hydrogen or, when the acid is stronger, of sulphurous acid gas and deposition of sulphur (Calvert and Johnson).
It is then treated with sulphurous acid gas, for the purpose of decolorization, again limed to neutralize the acid, and then passed through a third saturator wherein all traces of lime and sulphur are removed.
The use of sulphurous acid gas is entirely abandoned, and instead of three carbonatations with corresponding labour and plant only one is required.
When sulphuric or sulphurous acid is to be collected, it is important to keep the fuel gas from admixture with the sulphur gases, and kilns for this purpose require some modification.
- Kanagawa Pure, Salt or Sulphurous 98f 68
Sulphurous, phosphoric, carbonic, &c., should be regarded as elementary substances.
It behaves more as a ketone than as a quinone, since with hydroxylamine it yields an oxime, and on reduction with zinc dust and caustic soda it yields a secondary alcohol, whilst it cannot be reduced by means of sulphurous acid.
At San Juan de Carballo, on the opposite bank of the Allones, there are hot sulphurous springs.
Prairie fires or spontaneous combustion have ignited many coal seams. Some have already burnt out; others still emit smoke and sulphurous fumes from the crevices in the hillsides, and through the fissures may be seen the glowing coal and rock.
There are hot sulphurous springs near by on the flanks of the volcano Purace, especially at Coconuco, which are much frequented by Colombians.
These springs, strongly sulphurous, rise a short distance inland at several points, and at last pour steaming over the rocks, which they have yellowed with their deposit, into the Euboic Sea.
Sulphurous and other mineral springs, both hot and cold, exist in several districts, and deposits of silver, iron, copper, sulphur, coal and other minerals have been discovered; but the exploitation of these is retarded by lack of communications, and, apart from building materials, sulphur and salt, the actual output is insignificant.
Reducing agents, such as sulphurous acid and sulphuretted hydrogen, convert the chromates into chromic salts.
Silks to be finished white are at this point bleached by exposure in a closed chamber to the fumes of sulphurous acid, and at the close of the process the hanks are washed in pure cold water to remove all traces of the acid.
An aqueous solu tion of fuchsine is decolorized on the addition of sulphurous acid, the easily soluble fuchsine sulphurous acid being formed.
In like manner, if the molten iron in the mixer contains manganese, this metal unites with the sulphur present, and the manganese sulphide, insoluble in the iron, slowly rises to the surface, and as it reaches the air, its sulphur oxidizes to sulphurous acid, which escapes.
Beside this their chief and easy work of oxidizing carbon, silicon and phosphorus, the conversion processes have the harder task of removing sulphur, chiefly by converting it into calcium sulphide, CaS, or manganous sulphide, MnS, which rise to the top of the molten metal and there enter the overlying slag, from which the sulphur may escape by oxidizing to the gaseous compound, sulphurous acid, S02.
When a catalytic agent, such as sulphurous acid, is added, which produces a mutual change, the whole behaviour is different; only one meltingpoint, viz.
The temperature of the hot sulphurous springs is about 112° F.; and, as the waters are considered beneficial in cases of rheumatism and.
Thallic salts are easily reduced to thallous by means of solution of sulphurous acid, and thus rendered amenable to the above reactions.
It was followed in 1850 by the Latterday Pamphlets, containing "sulphurous" denunciations of the do-nothing principle.
It is celebrated for its warm sulphurous springs (75° to 111° F.), which first became generally known in 1675 when they were visited by Madame de Maintenon and the duke of Maine, son of Louis XIV.
Below the town is a reservoir containing a spring of clear water called the Anant Nag, slightly sulphurous, from which volumes of gas continually arise; the water swarms with sacred fish.
In the Maribios district occur several volcanic lakelets, such as that of Masaya, besides numerous infernillos, low craters or peaks still emitting sulphurous vapour and smoke, and at night often lighting up the whole land with bluish flames.
The commercial acid is usually yellow in colour and contains many impurities, such as traces of arsenic, sulphuric acid, chlorine, ferric chloride and sulphurous acid; but these do not interfere with its application to the preparation of bleaching powder, in which it is chiefly consumed.
Hydrochloric acid, sulphuretted hydrogen and sulphurous acid are rapidly oxidized by chloric acid.
The sulphurous acid evolved destroys such micro-organisms as may be in the cask, and in addition, as it reduces the supply of oxygen, renders the wine less prone to acidulous fermentation.
To the northeast of the town is the Solfatura, a half extinct volcano crater, in which sulphurous gases are exhaled.
Cuprous sulphite, CuS0 3 H 2 O, is obtained as a brownish-red crystalline powder by treating cuprous hydrate with sulphurous acid.
The springs are sulphurous, saline and chalybeate.
Of the town there is a sulphurous spring discovered in 1822.
(German Patent, 26642.) The diluents in which bromine is employed are usually ether, chloroform, acetic acid, hydrochloric acid, carbon bisulphide and water, and, less commonly, alcohol, potassium bromide and hydrobromic acid; the excess of bromine being removed by heating, by sulphurous acid or by shaking with mercury.
When finely divided it decomposes water giving hydrogen phosphide; it also reduces sulphurous and sulphuric' acids, and when boiled with water gives phosphine and hypophosphorous acid; when slowly oxidized under water it yields, hypophosphoric acid.
Of the town is the village of Hajo, which contains the PiispOk Fiirdo or Bishop's Baths, with warm saline and sulphurous waters (92° to 103° F.), used both for drinking and bathing in cases of anaemia and scrofula.
There is a sulphurous spa in the district of Lockwood.
It is formed by the reduction of triquinoyl by aqueous sulphurous acid, or in the form of its potassium salt by washing potassium hexa-oxybenzene with alcohol (R.
E., called Vranyska Banya, with baths of hot sulphurous mineral water.
Several of these are sulphurous and medicinal, and have been found efficacious in skin diseases and in internal complaints.
Acids, other than carbonic, may promote rusting; this is particularly the case with ironwork exposed to the acids - sulphurous, nitric, &c. - contained in smoke.
Other yeasts are stated to form sulphurous acid in must and wort.
Water decomposes it violently with formation of hydrochloric and sulphurous acids.