Organic and Physiologic Chemistry; A Manual for Students and Practitioners (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 Excerpt: ...is a valuable antiseptic, comparatively harmless to man. Di-iodo-thymol (aristol), C20hmo2i2, is Used in medicine, as an antiseptic, etc. Preparation.--The residue Methyl, CH3, unites directly with methyl to form ethane, C2H6. Similarly the benzene residue Phenyl, C6H5, unites with phenyl to form the hydrocarbon diphenyl, C12H10, and similar residues of toluene, and higher aromatic hydrocarbons unite to form a homologous series. Diphenyl is easily formed by the action of sodium on brom-benzene. THE CAMPHORS (STEAROPTENS). NAPHTHALIN. H H I I H-C 0 C-H M. F., C10H8; M. W., 128; G. F., _J Ij H H Formation.--Careful study of its chemical conduct shows it to he the union of two benzene residues, so that they have two carbon atoms in common, these carbon atoms being in the ortho-relation to each other. Structural Formula.--all aH Properties.--Its relation to naphthalin is the same as that of phenol to benzene. Isomeric Forms.--Two, /3-naphthol is used in medicine, a-naphthol is not. Microcidine (Sodium Naphthol) is used in aqueous solution as a disinfectant. Santonin. M. F., Ci5H18O3; M. W., 246; Q. F., as yet unknown. Properties.--It is the active principle of wormseed, seems to be related to naphthalin in chemical conduct, is a vermifuge, and after ingestion darkens the urine. On heating, such urine becomes cherry-red or crimson. This color disappears on acidifying, and reappears on neutralizing. ANTHRACENE (DIPHENYLENE-ETHANE). M. F., CUH;10; M. W., 178. Properties.--Anthracene is the most important of a series of hydrocarbons consisting of two benzene residues united by the residue of an unsaturated paraffin. Structure.--H H I I C C /' H--C C-CH-C C--H I II I I II' H--C C--CH-C C--H V %/ c c I I H H Anthraquinone (c6h4qqc6hj is related to Dihydroxy-an Thraqu...