Reference

Coloring hygrometer

Coloring hygrometer. (Sudo, Noboru, Japan). Jpn.In this study， 7439-98-7 and 13106-76-8 are also used. Tokkyo Koho JP 58037502 B4 16 Aug 1983 Showa, 3 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: G01N021-81; C09D005-00. ICA: C09K003-00. APPLICATION: JP 79-92186 19 Jul 1979. DOCUMENT TYPE: Patent CA Section: 47 (Apparatus and Plant Equipment) The hygrometer element consists of a humidity-sensitive, reversible, coloring material and a standardized color-painted chart. The coloring material is prepd. by dissolving oxalic acid and ammonium molybdate in 80% aq. H2SO3, redn. by 1-amino-2-naphthol-4-sulfonic acid, drying by evapn., extn. by MeOH contg. oxalic acid, and mixing the ext. with varnish, TiO2 powder, and a small amt. of a dye. .

Preparation of molybdenum(V) oxide by reduction of molybdenum(VI) in an aqueous medium

Preparation of molybdenum(V) oxide by reduction of molybdenum(VI) in an aqueous medium. Khain, V. S. (Ukhtinsk. Ind. Inst., Ukhta, USSR). Izv. Akad. Nauk SSSR, Neorg. Mater., 19(12), 2019-22 (Russian) 1984. CODEN: IVNMAW. ISSN: 0002-337X. 16940-66-2 and 13106-76-8 are also in the experiment. DOCUMENT TYPE: Journal CA Section: 78 (Inorganic Chemicals and Reactions) The stoichiometry was studied for the reaction of (NH4)2MoO4 or MoO3 with NaBH4 in weak acidic or neutral media (pH 4-7). The properties of the final redn. product of Mo(VI) were studied by 1H NMR, ESR, IR spectra, and thermal anal. methods. The optimum conditions for the formation of the final product, MoO(OH)3.2H2O, were established. .