Acid, boracic

Boracic acid is sparingly soluble in cold, readily in hot water. It is very soluble in alcohol, and its alcoholic solution bums with a flame mixed and tinged with pale green a property characteristic of the compounds of boron. 

It is a feeble acid, and reddens litmus slightly it colours turmeric brown, like alkali. With bases it forms salts called borates, which are for the most part insoluble. The alkaline borates alone are soluble. All the salts of this acid are very fusible, and promote the fusion of other bodies when mixed wili them. Hence, borax is much used as a blowpipe flux, which not only promotes fusibility, but at a red-heat dissolves siliceous compounds to a clear, fusible glass. 

No compounds are known of boron with hydrogen or nitrogen. 

With chlorine boron combines when it is heated in the gas, or when chlorine is passed over a red-hot mixture of boracic acid and charcoal. The terchloride of boron, B Cl, isa at ordinary temperatures. It has a pungent acid smell, and forms thick 

Nothing is known of the compounds of boron with bromine and iodine. 

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Vaseline, Castor oil, Olivo oil, Sal volatile, Boracic acid powder, Sodium bicarbonate powder, Chloramiue-T powder. Sulpha-pyridine powder, Butesin picrate ointment. 

Boric acid (boracic acid) [10043-35-3] M 61.8, m 171 , pK 9.23. Crystd three times from H2O (3mL/g) between 100° and 0°, after filtering through sintered glass. Dried to constant weight over metaboric acid in a desiccator. It is steam volatile. After 2 recrystns of ACS grade it had Ag at 0.2 ppm. 

Chemical Designations - Synonyms Boracic Acid Orthoboric Acid Chemical Formula H3BO3. Observable Characteristics - Physical State (as normally shipped) Solid Color White Odor. None. Physical and Chemical Properties - Physical State at 15 and 1 atm. Solid Molecular Weight 61.83 Boiling Point at 1 atm. Not pertinent (decomposes) Freezing Point Not pertinent Critical Temperature Not pertinent Critical Pressure Not pertinent Specific Gravity 1.51 at I4°C (solid) Vapor (Gas) Density Not pertinent Ratio of Specific Heats of Vapor (Gas) Not pertinent Heat... 

Boric acid (boracic acid H BO ) is used for the manufacture of glass, welding, mattress batting, cotton textiles, and a weak eyewash solution. 

After the chemical revolution, sedative salt came to be regarded as an acidic oxide, boric (or boracic) acid. Even at the close of the eighteenth century, its chemical nature was not understood. In a letter to the Annales de Chimie et de F ysiqtie, A. N. Scherer wrote in 1799 I have just been assured that Crell has recognized carbon as the radical of boracic acid (67). 

Before regarding their proof as complete, Gay-Lussac and Thenard wished not only to decompose boric acid, but to recompose it. On November 30 of the same year they were able to state m the Annales de Chimie et dc Physique that the composition of boracic acid is no longer problematical. In fact, said they, we decompose and we recompose this acid at will Their method was as follows ... 

To decompose it, place equal parts of metal [potassium] and very pure, vitreous boracic acid in a copper tube to which a tube of bent glass is attached. Place the copper tube in a small furnace, with the end of the glass tube in a flask of mercury When the apparatus is ready, heat the copper tube gradually until it becomes faintly red keep it in this condition for several minutes then, the operation being ended, allow it to cool and take out the material. 

Boric Acid in Sea Water. In 1865 J. G. Forchhammer detected boric acid in sea water (123), I have long tried, said he, "to find boracic acid... 

Boron in Plants and Animals. When I had convinced myself, said Forchhammer, that boracic acid occurred m sea water, it appeared to me in the highest degree probable that the organisms of the sea would collect it, and that it might be found in their ashes. I was so fortunate as to begin my experiments with a plant that contained it in a rather large quantity, viz. the Zostera marina.. . . Even Fucus vesiculosus contains the same acid, but in a much smaller quantity (123)... 

Foster, P, Le Neve, Jr, The manufacture of boracic acid in Tuscany, ... 

The Venetian contains also traces of magnesia and phosphoric or boracic acid the crystals appear disseminated through the mass, which is of a yellow tint, and transparent in thin sheets. The tin and iron obviously assist in the formation" of the crystals of metallic copper, after which the tin becomes silicate of the protoxide, otherwise the glass would become opaque. 

The borates of the alkalies are prepared by mixing boracic acid with the hydroxide of the alkali metal although there are very few hydrogen ions in an aqueous solution of boracic acid, however dilute, yet some of those present combine with the hydroxyl ions of the alkali, forming... 

Synonyms Boracic acid, Hydrogen borate, Orthoboric acid. 

Boracic acid HjBOj boric acid drugstore... 

Colored Flames. Tho flamo of alcohol may be colored by mixing certain salts with tho spirit. A green color is given by muriate of copper, or boracic acid. Red, by nitrato of stroutian, nitrato of iron, or nitrate of lime. Yellow, by nitrato of soda, Ac. 

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