XXII

Francis G 1956 The giow discharge at iow pressure Handbuch der Physlkyo XXii, ed S Fiugge (Beriin Springer)... 

Corey E J and J C Bailar ]t 1959. The Stereochemistry of Complex Inorganic Compounds. XXII. Stereospecific Effects in Complex Ions. Journal of the American Chemical Society 81 2620-2629. 

Supplement (combined with Volumes XXI and XXII) XX, 2nd 1935 3032-3457 181. Indole, 304. Quinoline, 339. Iso-quinoline, 380. Carbazole, 433. Acridine, 459. 

XXU XXII, 1st 1935 3242-3457 One Cyclic Nitrogen (continued). Carboxylic acids Nicotinic acid, 38. 

Supplement XXII, 2nd 1935 3032-3457 Quinolbe carboxylic acid, 74. Cin-chomeromc acid, 155. 

It is also possible for a single monomer to behave as both diene and dienophile. Heating diacetylene [XXII] produces an infusible material which may be rationalized as follows ... 

The Ended States Pharmacopoeia XXI (ESP XXII-NF XVII), The United States Pharmacopeia Convention, Inc., Rockville, Md., 1990. 

The early USPC was dominated by physicians who selected the best dmgs. This prevented iaclusion ia the USP of a large number of substances that were widely used, particularly elixirs, a popular dosage form ia the late nineteenth ceatury. To fill this gap, ia 1888 the American Pharmaceutical Association pubUshed the first NE, which provided standards for dmgs ia wide use but aot iacluded ia the USP. A history of the Natioaal Eormulary is also iacluded at the froat of the NF sectioa ia USP XXII—NFXUII (5). 

USP XXII, 22th rev., 1990, The U.S. Pharmacopoeial Convention, Rockville, Md. Merck Index, 11th ed., Merck, Rahway, N.J., 1989. 

J. C. Contassot and co-workers, "Epidemiological Study of Cancer Morbidity Among Workers Exposed to Hydrazine," poster presented at the XXII International Congress on Occupational Health, in Sydney, AustraUa, Sept.—Oct., 1987. 

Specifications and Standards, Shipping. Commercial iodine has a minimum purity of 99.8%. The Committee of Analytical reagents of the American Chemical Society (67) and the U.S. Pharmacopoeia XXII (68) specify an iodine content not less than 99.8%, a maximum nonvolatile residue of 0.01%, and chlorine—bromine (expressed as chlorine) of 0.005% (ACS) and 0.028% (USP), respectively. In the past these requirements were attained basicaHy only by sublimation, but with processing changes these specifications can be met by direct production of iodine. Previously the impurities of the Chilean product were chiefly water, sulfuric acid, and insoluble materials. Improvements in the production process, and especiaHy in the refining step, aHow the direct obtainment of ACS-type iodine. Also, because of its origin and production process, the Chilean iodine has a chlorine—bromine impurity level of no more than 0.002%. 

Parameter FCC III UyF xxii/NF XVII + HPE E322 E322 and EEEMA ISCI-II... 

The US. Pharmacopeia (USP XXII) or National Formula (NFXVII) (20) also provide a similar description however, the peroxide value is not defined (Table 9). These specifications are also given in the Handbook of Pharmaceutical Excipients (HPE), pubhshed jointiy by the American Pharmaceutical Association and The Pharmaceutical Society of Great Britain (21), which defines lecithins both from plants and eggs. The Merck Index (22) specifies a slightiy lower acid value. The Japanese Monograph (ISCI-II) (23) specifies a slightiy lower acetone-insoluble matter and a lower heavy-metal content. 

U.S. Pharmacopeia XXII and National Formulay XTTI, U.S. Pharmacopeial Conventions, Inc., Washington, D.C., 1990. 

United States Pharmacopeia XXII-NationalFormulary XTTI, 1990. 

Values of acidity, nonvolatility, and refractive index for 1990 US. Pharmacopeia XXII a2eotropic (91—93 vol %) isopropyl alcohol are equal to those of 1990 USP XXII anhydrous. 

USP XXII specifies that sodium iodide contains 99—101.5% Nal, calculated on an anhydrous basis (4). It is used iaterchangeably with potassium iodide as a therapeutic agent, except where sodium ion is contraindicated (see Potassium compounds). Intravenous sodium iodide formulations have been used for a variety of diseases, from thyroid deficiency to neuralgia (see Thyroid and antithyroid preparations). However, these solutions are no longer listed ia the XFXUII (4), iadicatiag that their therapeutic value has not been satisfactorily demonstrated. 

USP XXII general dihydrate 99-107% CaCl2-2 H2O calcium chloride for injections, sterile solution in water, 95—105% of labeled CaCL-2 H,0 ... 

United States Pharmacopeia XXII, United States Pharmacopeial Convention, Inc., RockviUe, Md., 1989. 

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