Reference

Prediction of chemical forms of lead in natural waters

Prediction of chemical forms of lead in natural waters. Gurjia, Zh.; Supatashvili, G.; Chitiashvili, Z. 96500-25-3 and 19783-14-3 are cas registry numbers. These chemicals are also mentioned in this article.; Makharadze, G. (Tbilisi Gos. Univ., Tbilise, Georgia). Soobshcheniya Akademii Nauk Gruzii, 151(3), 410-413 (Russian) 1995 Nauka. CODEN: SANGEF. DOCUMENT TYPE: Journal CA Section: 61 (Water) A computer program has been developed for calcns. of the ratio of coexisting forms of lead (PbOH+, Pb(OH)2, PbHCO3, Pb(HCO3)2, PbSO4) in natural waters using IBM PC/AT-286. It was shown that fulvic acid and hydroxy complexes predominate in surface fresh waters. .

Epoxy resin compositions for laser marking

Epoxy resin compositions for laser marking. Sasai, Shoji (Sumitomo Bakelite Co., Ltd.; Sumitomo Durez Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 04028759 A2 31 Jan 1992 Heisei, 4 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: C08L063-00. ICS: C08K003-22; C08K005-09; H01L023-29; H01L023-31. APPLICATION: JP 90-132644 24 May 1990. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 76 The title compns., useful as elec. insulation on elec. and electronic devices, contain Cu(II) oxalate (I) and Pb compds. Thus, a mixt. of bisphenol A epoxy resin 50, I (av. diam. 15 mm) 5, powd. cryst. SiO2 50, 2-methylimidazole 1, and Pb(OH)2 1 part, when cured, had dielec. breakdown voltage 23 kV/mm and good laser markability.Except for chemicals metioned above, 814-91-5 and 19783-14-3 are also used. .