noun
definition
Any salt or ester of phosphoric acid.
definition
A carbonated soft drink sweetened with fruit syrup and with some phosphoric acid.
verb
definition
To treat or coat with a phosphate or with phosphoric acid
Examples of phosphate in a Sentence
On Christmas Island the phosphate has been quarried to depths of 100 ft.
In Lingula the shell is composed of alternate layers of chitin and of phosphate of lime.
The phosphate beds contain Eocene fossils derived from the underlying strata and many fragments of Pleistocene vertebrata such as mastodon, elephant, stag, horse, pig, &c. The phosphate occurs as lumps varying greatly in size, scattered through a sand or clay; they often contain phosphatized Eocene fossils (Mollusca, &c.).
The acid renders it available as a manure by converting the calcium phosphate, Ca 3 P 2 O 8, that it contains into the soluble monocalcium salt, CaH 4 P 2 O 8, or "superphosphate."
Mitscherlich, in the case of the acid phosphate and acid arsenate of potassium, KH 2 P(As)04, who adopted the term isomorphism, and regarded phosphorus and arsenic as isomorphously related elements.
Cattle, phosphate of lime and salt, manufactured from a lake in the interior, are the principal exports, the market for these being the neighbouring island of St Thomas.
On these rounded hills occurs the deposit of phosphate of lime which gives the island its commercial value.
Among the rocks then obtained and submitted to Sir John Murray for examination there were detected specimens of nearly pure phosphate of lime, a discovery which eventually led, in June 1888, to the annexation of the island to the British crown.
From that time the history of Bona is one of industrial development, greatly stimulated since 1883 by the discovery of the phosphate beds at Tebessa.
The source of the carbon of organic tissues is carbonic acid; that of the nitrogen in the proteids is the nitrates, nitrites and salts of ammonia dissolved in sea-water; the material of the shells or other skeletons is the silica, phosphate and calcium of the salts of sea-water (and, in rare cases, the salts of strontium).
It has been estimated that 500,000 tons of phosphate were obtained in Aruba, 1,000,000 tons from Curacoa since the deposits were discovered in 1870, and Christmas Island in 1907 yielded 290,000 tons.
The " Challenger " and other oceanographic expeditions have shown that on the bottom of the deep sea concretions of phosphate are now gathering around the dead bodies of fishes lying in the oozes; consequently the formation of the concretions may have been carried on simultaneously with the deposition of the strata in which they occur.
In South Carolina, where there are important deposits of phosphate, formerly more productive than at present, the " land rock " is worked near Charleston, and the " river rock " in the Coosaw River and other streams near Beaufort.
Cobalt ammonium phosphate, CoNH4PO 4.12H 2 0, is formed when a soluble cobalt salt is digested for some time with excess of a warm solution of ammonium phosphate.
It may be in the form of an albumen crystal sometimes associated with a more or less spherical bodygloboid-composed of a combination of an organic substance with a double phosphate of magnesium and calcium.
The state contains deposits of iron, gypsum, marl, phosphate, lignite, ochre, glass-sand, tripoli, fuller's earth, limestones and sandstones; and there are small gas flows in the Yazoo Delta.
This salt gives the corresponding chloride and fluoride with hydrochloric and hydrofluoric acids, and the phosphate, Pb(HP04)2, with phosphoric acid.
The normal ortho-phosphate, Pb3(P04)2, is a white precipitate obtained by adding sodium phosphate to lead acetate; the acid phosphate, PbHPO 4, is produced by precipitating a boiling solution of lead nitrate with phosphoric acid; the pyrophosphate and meta-phosphate are similar white precipitates.
Uranyl nitrate is used in photography, and also in analytical chemistry as a precipitant for phosphoric acid (as uranyl ammonium phosphate, U02 NH4 P04).
Sfax was formerly the starting-point of a caravan route to Central Africa, but its inland trade now extends only to the phosphate region beyond Gafsa, reached by a railway which, after skirting the coast southwards from Sfax to Mahares, runs inland past Gafsa.
Orthophosphoric acid, H3P04, a tribasic acid, is obtained by boiling a solution of the pentoxide in water; by oxidizing, red phosphorus with nitric acid, or yellow phosphorus under the surface of water by bromine or iodine; and also by decomposing a mineral phosphate with sulphuric acid.
This mineral, known as Estremadura phosphate, occurs at Logrossan and Caceres, where it forms an important deposit in clay-slate.
It may contain from 55 to 62% of calcium phosphate, with about 7% of magnesium phosphate.
The first mode of occurrence is of little significance practically, for the crystalline rocks generally contain too little phosphate to be valuable, though occasionally an igneous rock may contain enough apatite to form an inferior fertilizing agent, e.g.
Phosphate mining began in South Carolina in 1868, and for twenty years that state was the principal producer.
Nine miles from Tebessa are the extensive phosphate quarries of Jebel Dyr, where is also an interesting megalithic village.
Tampa is an important shipping point for naval stores and phosphate rock, for vegetables, citrus fruit and pineapples, raised in the vicinity, and for lumber, cattle and fuller's earth.
The principal minerals are rock phosphate and (recently more important) land and river pebble phosphate, found in scattered deposits in a belt on the " west coast " about 30 m.
The centre of the quarries is Dunnellon in Marion county, and pebble phosphate is found in Hillsboro, Polk, De Soto, Osceola, Citrus and Hernando counties.
Although the economic value of the phosphate deposits was first realized about 1889, between 1894 and 1907 Florida produced, each year, more than half of all the phosphate rock produced in the whole United States, the yield of Florida (1,357,365 long tons) in 1907 being valued at $ 6, 577,757; that of the whole country at $10,653,558.
In the manufacture of fertilizers, the raw material for which is derived from the phosphate beds, Florida's aggregate product in 1900 was valued at $500,239, and in 1905 at $1,590,371, an increase of 217.9% in five years.
The leased convicts are employed in the turpentine and lumber industries and in the phosphate works.
Immense phosphate beds were discovered near Tebessa in 1891.
By - adding sodium phosphate to magnesium sulphate and allowing the mixture to stand, hexagonal needles of MgHPO 4.7H 2 O are deposited.
Phosphorus is obtained as a soluble phosphate (which can be examined in the usual way) by lixiviating the product obtained when the substance is ignited with potassium nitrate and carbonate.
In the case of sodium dihydrogen phosphate, NaH 2 PO 4 H 2 O, a stable rhombic form is obtained from warm solutions, while a different, unstable, rhombic form is obtained from cold solutions.
The phosphatic deposit has doubtless been produced by the long-continued action of a thick bed of sea-fowl dung, which converted the carbonate of the underlying limestone into phosphate.
Semi-opacity and opacity are usually produced by the addition to the glass-mixtures of materials which will remain in suspension in the glass, such as oxide of tin, oxide of arsenic, phosphate of lime, cryolite or a mixture of felspar and fluorspar.
Some of the chalk marls, which are usually of a yellowish or dirty grey colour, contain clay and 50 to 80% of carbonate of lime with a certain proportion of phosphate of lime.
Such a material would not only have an influence on the texture of the land but the lime would reduce the sourness of the land and the phosphate of lime supply one of the most valuable of plant foodconstituents.
In 1906 was opened a continuation of the line from Pont du Fahs to Kef and thence southwest to Kalaat-es-Senam, a place midway between Kef and Tebessa, the centre of the Algerian phosphate region.
A branch from the Kef line runs to the phosphate mines of Kalaa-Jerda.
All soluble orthophosphates give with silver nitrate a characteristic yellow precipitate of silver phosphate, Ag 3 PO 4, soluble in ammonia and in nitric acid.
In many deposits of iron ores found in connexion with igneous or metamorphic rocks small quantities of phosphate occur.
The Swedish, Norwegian, Ontario and Michigan mines yield ores of this kind; and though none of them can be profitably worked as a source of phosphate, yet on reducing the ore it may be retained in the slags, and thus rendered available for agriculture.
Sometimes the phosphate is found at the surface, but generally it is covered by alluvial sands and clays.
In 1908 Florida produced 1,673,651 tons of phosphate valued at 11 million dollars.
All the other states together produce less phosphate than Florida, and among them Tennessee takes the first place with an output of 403,180 tons.
Near Jebel Kouif, on the frontier between Algeria and Tunis, there are phosphate workings, as also in Tunis, at Gafsa.
Two varieties of phosphate rock are recognized in these districts, viz.