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H3PO4
(gcide) | Phosphoric \Phos*phor"ic\, a. [Cf. F. phosphorique.]
1. (Chem.) Of or pertaining to phosphorus; resembling, or
containing, phosporus; specifically, designating those
compounds in which phosphorus has a higher valence as
contrasted with the phosphorous compounds.
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2. Phosphorescent. "A phosphoric sea." --Byron.
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Glacial phosphoric acid. (Chem.)
(a) Metaphosphoric acid in the form of glassy
semitransparent masses or sticks.
(b) Pure normal phosphoric acid.
Phosphoric acid (Chem.), a white crystalline substance,
H3PO4, which is the most highly oxidized acid of
phosphorus, and forms an important and extensive series of
compounds, viz., the phosphates.
Soluble phosphoric acid, Insoluble phosphoric acid
(Agric. Chem.), phosphoric acid combined in acid salts, or
in neutral or basic salts, which are respectively soluble
and insoluble in water or in plant juices.
Reverted phosphoric acid (Agric. Chem.), phosphoric acid
changed from acid (soluble) salts back to neutral or basic
(insoluble) salts.
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