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sodium ethane tetracarboxylic ester, the resulting tetra-hydronaphthalene tetracarboxylic ester being hydrolysed and heated, when it yields hydronaphthalene dicarboxylic acid, the See also:

SILVER

silver See also:

salt of which decomposes on See also:

DISTILLATION (from the Lat. distillare, more correctly destillare, to drop or trickle down)

distillation into naphthalene and other products (A. v. See also:

BAEYER, JOHANN FRIEDRICH WILHELM ADOLF VON (1835– )

Baeyer and W. H. See also:

PERKIN, SIR WILLIAM HENRY (1838-1907)

Perkin, junr., Ber., 1884, 17, P.

451): See also:

C6H4<CH2Br+Na•C(CO2R)2 C6Ha ~•CHCH2•C2•C(CO(CO22RH)2 )2 CioH8 C6H9`CHCH22•CH H•C0CO22HH C6H4`See also:

CH2•C(See also:

CO2H

CO2H)2 " Nape," the back of the See also:

NECK (O. Eng. hnecca; the word appears in many Teutonic languages; cf. Dutch ride, Ger. Nacken; in O. E. the common word was heals; cf. Ger. Hals)

neck, is of doubtful origin; it may be a variant of " knap," a knob or protuberance. It is a colourless solid, which melts at 8o° C., and boils at 218° C. It crystallizes in the See also:

MONOCLINIC

monoclinic See also:

SYSTEM

system; it is to be noted that a- and /3-naphthol assume almost identical forms, so that these three compounds have been called isomorphous. It is insoluble in See also:

WATER

water, but is readily soluble in See also:

ALCOHOL

alcohol, and ether. It has a characteristic See also:

SMELL (connected etymologically with " smoulder " and " smoke ")

smell, and is very volatile, distilling readily in a current of See also:

steam. It acts as a weak antiseptic. It is used for enriching coal See also:

gas, as a See also:

VERMIN (Fr. vermine, formed as if from Lat. verminus, vcrmis, a worm)

vermin killer, in the manufacture of certain See also:

AZO (c. 1150-1230)

azo dyes, and in the preparation of See also:

PHTHALIC

phthalic acid (q.v.). When passed through a red-hot tube packed with See also:

CARBON (symbol C, atomic weight 12)

carbon it yields f3/3-dinaphthyl, (C10H7)2. It forms a crystalline See also:

compound with picric acid. It readily forms addition products with See also:

CHLORINE (symbol Cl, atomic weight 35`46 (0=16)

chlorine and with See also:

HYDROGEN [symbol H, atomic weight x-oo8 (0=16)]

hydrogen; the dichloride, CIOH8C12, is obtained as a yellow liquid by acting with hydrochloric acid and See also:

POTASSIUM [symbol K (from kalium), atomic weight 39.114 0=16)]

potassium chlorate; the solid tetrachloride, Clo Ha C14, results when chlorine is passed into naphthalene dissolved in See also:

CHLOROFORM (trichlor-methane), CHC13

chloroform. Numerous hydrides are known; heated with red See also:

PHOSPHORUS (Gr. 4ws, light, sPEpety, to bear)

phosphorus and hydriodic acid the hydrocarbon yields mixtures of hydrides of See also:

composition Clotho to C1oH2o. Sodium in boiling See also:

ETHYL

ethyl alcohol gives the a-dihydride, CloHlo (E.

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NAPHTHOLS, or HYDROXYNAPHTHALENES, C10H70H