. Carnegie Institution of Washington publication. MISCELLANEOUS COMPOUNDS. 61 TARTARIC ACID (C*H6Oo). (Cleavage parallel to a. Curve a, fig. 47.) In fig. 47 curve c is for a film melted and crystallized between thin cover-glass, £ = mm., while curve a is for a cleavage section, / = mm. Curve b is for a film melted between plates of rock salt. This compound has the properties of a divalent alcohol and of dibasic acids. The curves are characteristic of alcohols, having an absorption band from to 4 /*, followed by a transparent region at /x,, which is characteristic of carbohydr
. Carnegie Institution of Washington publication. MISCELLANEOUS COMPOUNDS. 61 TARTARIC ACID (C*H6Oo). (Cleavage parallel to a. Curve a, fig. 47.) In fig. 47 curve c is for a film melted and crystallized between thin cover-glass, £ = mm., while curve a is for a cleavage section, / = mm. Curve b is for a film melted between plates of rock salt. This compound has the properties of a divalent alcohol and of dibasic acids. The curves are characteristic of alcohols, having an absorption band from to 4 /*, followed by a transparent region at /x,, which is characteristic of to 01?. 4 6 8 FIG. 48.—Phloroglucin (a); Malic acid. PHLOROGLUCIN (C8H8(OH)8+2H2O). (f = Fig. 48.) This belongs to the group containing water of crystallization. Apparently it is an exception to the rule. The sample turned light brown on melting, and it is quite probable that the H2O was partly expelled. The compound belongs to the phenols, hence one would expect a band at 3 to /*, the latter being the characteristic of benzine. There are small water bands at i .45 and /u,.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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