AZOBENZENE

n. A?z-o-be?n'zen. Fr., azo benzine, Ger., Azobenzol. It., Azo benzin a. A compound of benzene and nitrogen, CyaHioNo = CoH, — N—N — CgHg, formed by the action of nascent hydrogen on azoxybenzene; vellowish-red laminar or tabular erystals, insoluble in Water, readily soluble in alcohol and in ether. i 2, 4.]—A’acetoac acid. Fr., acide azo benzine-acétoacétique. Ger., Azobenzole iqstiure. A monobasic acid, C,oH10N909 = CHs = CO - CHIN — N.C,H,) — CO.OH, forming small’golden faminar crystals. [B, 3.|—A’dimethyl ketone. Fr., acélone (ou kétone) azo benzine-diméthylique. Ger., Azobenzoldimethplketon. An azo compound of benzene and dimethyl ketone, C,H,N40 = CeH, — N N — CH,.CO.CH,, forming shining yellowish prismatic or yellow acicular crystals of a peculiar odor. [B, 3,]—A’disulphonic acid. Fr. acide azo benzine-disulfonique. Ger., Azobenulfonsäure. ‘A dibasic acid, C,2H,0N28205 = C,H,(S0,.0H)— N — C,H,(SO2.0H). Two isomeric acids of this formula, a ad. acid and ß a’d. acid, are formed by heating a. with fuming sulphuric acid. The former, united with 1 molecule of water of crystallization, forms red deliquescent acicular crystals; the latter forms asyrup. Metaa’d. acid, another isomeric form, united with 3 molecules of water of crystallization, forms yellowish deliquescent prismatic crystals. Paraa'd. acid, formed by the oxidation of sulph an i lie acid, is another isomer. [B, 3.]—A’meta phenylene diamine. Fr., azo benzine-métaphényléne-diamine. Ger., Azo benzol meta phenyl end i am in. Chrysoidine, diamidoazobenzene. [‘ Ber. d. dtsch. chem. Gesellsch.,”* Fe 2028 (B).]—A>nitrolic acid. Fr., acide azo benzine-nitrolique. Azobenzolnitrolsäure. An acid, C,2H,0N40, occurring as a yellow, flocculent precipitate, or, when deposited from alcohol, as brownish-red, acicular crystals, Aecording to Janovsky and Erb, it has the composition 2(C,_Hy9N30) = = N.CgH,.N(OH) fo ce CsHg.N —N.C,Hy.N(OH) M H benzine-sulfonamine. Ger., Azobenzolsulfonamid. A powder of the composition C,,H,,N,SOq,being that of an amide of a’sulphonic acid. B, 31— Atsuip! honic acid. Fr,, acide azo benzine-sulfonique. jer., Azobenzolsulfonsäure, A monobasic acid, C,2H,0) 280s + 3H,0 = C,H,(SO,.0H) —N N — C,H, + 3H,0, obtained by the action of funting sulphuric acid on a.; large, dark orange-red, laminar crystals. [B, 3.]—A’sulphonic chloride. _Fr., chlorure azo benzine-sulfonique. _ Ger, Azobenzolsulfochloriir. A substance, CygHNo.SOgCl = C,H,(SO,C) — NZN — C,II,. forming orange-yel- A?z(a?z)-itm-a(a3)'se?(ke?)-e(a3-e?), ‘ardner’s name for the Salvador aceæ A%z-i?m/i2d-o-be’n’-zen. See Azo- [B, 3.J—A’sulphonamide. low ma es {insoluble in water. [B, 3.]