444 
POTASSII NITRAS. 
An abstract (from Ztschr. ang. Chem.) points out that the produc- 
tion of Chile saltpeter in 1905 amounted to 16,946,646 quintals, an 
increase of 802,307 quintals over the year preceding.— Schweiz. 
Wchnschr. f. Chem. u. Pharm., 1906, v. 44, p. 146. 
Mehrtens, C. Paal and Gustav, review some of the efforts to devise 
a satisfactory method for estimating potassium nitrate in meat prod- 
ucts. They outline a method based on the use of nitron. — Ztschr. f. 
Unters. d. Nahr. u. Genussm., 1906, v. 12, pp. 410-116. 
Evans Sons Lescher and Webb assert that they have found potas- 
sium nitrate to be practically free from arsenic contamination. — 
Analytical Notes for 1906, E. L. & W., Lond., 1907, p. 27. 
POTASSII PERM ANG AN AS. 
Baxter, Boylston and Hubbard report experiments on the solu- 
bility of potassium permanganate, describe their methods, and pre- 
sent their results in a table and platted on a chart. At 24.8° C. the 
average of the determinations was found to indicate a solubility of 
7.055 per cent of KMn0 4 . — J. Am. Chem. Soc., 1906, v. 28, pp. 
1336-1343. 
Patterson, Austin M., contributes a note on the solubilities of the 
permanganates of the alkali metals and records his observations. The 
specific gravity of the saturated solution of potassium permanganate 
at 15° C. is 1.035, and 100 cc. solution contains 5.22 gm. of the dis- 
solved salt. — Ibid ., v. 28, pp. 1734-1736. 
Voerman, G. L. (Chem. Weekblad, 1905, v. 2, 766, 767; Chem. 
Centr., 1906, v. 1, pp. 124, 125), has determined the solubility of 
potassium permanganate in wat^r. At 15° C. water is capable of 
dissolving 4.95 per cent of this salt. — Abstr. in J. Soc. Chem. Ind., 
Bond., 1906, v. 25, p. 120. 
Klein, Joseph, outlines a method for the estimation of formic acid 
by means of potassium permanganate. (Chem. Ber., 1906, v. 39, pp. 
2640, 2641.) — Biochem. Centralbl., Leipz., 1906-7, v. 5, p. 764. 
Garner & King report on the germicidal action of potassium per- 
manganate. — Am. Chem. J., 1906, v. 35, pp. 144-147. 
Yoerner, Hans, (La Odont, Madrid, August, 1906) employs potas- 
sium permanganate, either in solution, in powder, or as a paste in 
minor surgical operations. — Dental Cosmos, Phila., 1906, v. 48, p. 
1162. 
Felter, Harvey Wickes, says that eclectic physicians and surgeons 
have always been partial to potassium permanganate as an antiseptic 
cleansing agent, preferring it over such drugs as corrosive sublimate, 
iodoform, and carbolic acid. He adds a caution as to the proper 
dispensing of the drug. — Eclectic Med. J., Cincin., 1906, v. 66, p. 588. 
