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A Manual of the Chemistry of the Carbon Compounds

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246 TBB CHEMISTRY OF<br />

ammonium hydurilate. The free acid, which may he obtained by<br />

decomposing <strong>the</strong> ammonium-salt with hydrochloric acid, crystallizes<br />

in small four-sided prisms, and is sparingly soluble in water. It is a<br />

strong bibasio acid, which., as well as its salts, give with ferric chloride<br />

a beautiful green coloration. Conoentrated nitric acid oxidizes it to<br />

alloxan; a more dilute acid produces,besides <strong>the</strong> latter compound, two<br />

o<strong>the</strong>r bodies, called violuric acid aud dilituric acid.<br />

,<br />

VioluHo Add or JBrosamalonyl-nrea CH(NO)j cojraI 00 '<br />

By <strong>the</strong> action <strong>of</strong> cold dilute nitric acid (1*2 specific gravity) upon<br />

liydurilic<br />

h<br />

acid,<br />

i<br />

alloxan<br />

f ld<br />

and<br />

dilt<br />

violuric<br />

iti<br />

acid<br />

id<br />

are<br />

(12<br />

formed;—<br />

ifi it)<br />

C8H0N4Oa + HNO,« C^Vfit +

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