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MICROCOSMIC SALT

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Originally appearing in Volume V18, Page 381 of the 1911 Encyclopedia Britannica.
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MICROCOSMIC See also:

SALT , or ammonium See also:sodium 'See also:hydrogen orthophosphate, NH4NaHPO4 .41120, so named by the .alchemists because it is contained in the decomposing urine of See also:man (the " See also:microcosm "). It is interesting historically as being the raw material from which See also:Brand prepared See also:phosphorus, whence it is also called " salt of phosphorus." It may be obtained in large transparent crystals from a mixture of solutions of sal-ammoniac and disodium phosphate, or by saturating a See also:solution of monosodium phosphate with See also:ammonia. When heated to redness, it leaves a transparent See also:glass of sodium metaphosphate, NaPO3, which like See also:borax dissolves most metallic oxides, with formation of glasses that often exhibit characteristic See also:colours, and which may be used in the qualitative See also:analysis of substances.

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