Reference

Nonaqueous titrimetric determination of food preservatives and nonnutritive sweeteners using internal indicators

Nonaqueous titrimetric determination of food preservatives and nonnutritive sweeteners using internal indicators. Rao, M. Veerabhadra; Krishnamacharyulu, A. G.Several substances are used for example 139-05-9 and 110-44-1 which are their cas registry numbers.; Kapur, O. P.; Sastry, C. S. Prakasa (Anal. Qual. Control Lab., Cent. Food Technol. Res. Inst., Mysore 570 013, India). J. Food Sci. Technol., 20(5), 202-5 (English) 1983. CODEN: JFSTAB. ISSN: 0022-1155. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) Oracet blue B [12769-16-3], Sudan blue GN [6408-50-0], Sudan green 4B [128-80-3] (amino anthraquinone dyes) and Resazurin [550-82-3] were used for the 1st time as internal indicators in the nonaq. titrimetric detn. of food preservatives such as Na benzoate [532-32-1], Na propionate [137-40-6], Na salicylate [54-21-7], and nonnutritive sweeteners such as Na saccharin [128-44-9] and Na cyclamate [139-05-9], employing perchloric acid [7601-90-3] as titrant. Azur A [8000-86-0], Azur C [531-57-7], Toluidine blue O [92-31-9] (thiazine dyes), and Bromo pyrogallol [16574-43-9] red were studied for their suitability in the titrns. employing Na methoxide [124-41-4] as titrant for detn. of acid forms of the above preservatives and the nonnutritive sweeteners sorbic acid [110-44-1] and p-hydroxy benzoic acid [99-96-7]. The results are accurate with a max. percentage error of 0.1, 0.8, and 2.5 for macro, semi-micro, and micro titrns., resp. The recoveries of added preservatives and nonnutritive sweeteners in food products are reported. Photometric titrns. are also described. .

Packaging paper and packing material for packing metallic materials

Packaging paper and packing material for packing metallic materials.Some chemicals with cas registry numbers like 497-19-8 and 7632-00-0 are also used. Nomura, Yoshika; Sano, Susumu; Shoji, Sadahiro (Honshu Paper Co., Ltd., Japan). Ger. Offen. DE 3328199 A1 9 Feb 1984, 41 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: D21C003-00; D21C003-16. APPLICATION: DE 83-3328199 4 Aug 1983. PRIORITY: JP 82-UT135675 5 Aug 1982; JP 82-UT135676 5 Aug 1982; JP 82-UT136239 6 Aug 1982; JP 82-UT141079 16 Aug 1982; JP 83-UT45132 17 Mar 1983. DOCUMENT TYPE: Patent CA Section: 43 (Cellulose, Lignin, Paper, and Other Wood Products) Section cross-reference(s): 55 Antitarnish paper for packaging of metals is manuf. from pulp (optionally oxidized) prepd. in neutral or alkali processes using no S-contg. cooking agents or by addn. of antirust agents, such as NaOBz [532-32-1] and NaNO2, to binders or sizing agents for soda, kraft, or sulfite paper. Thus, a mixt. of 600 g softwood chips in alkali soln. contg. 18% NaOH and 0.05% 1,4-dihydro-9,10-dihydroxyanthracene [56136-13-1] on the basis of dry chip wt. was cooked for 2 h at 170° to give pulp with 51 K-value. The pulp as above was treated with 0.3% alkyl ketene dimer and 0.6% cationic starch, formed into handsheet and dried to give a specimen with basis wt. 80 g/m2 and pH 6.8 which showed 3% rust when wrapped on iron plate as compared with 30% rust for control kraft paper. .