Reference

Stable liquid fertilizers

Stable liquid fertilizers. (Chisso Asahi Fertilizer Co.Several substances are used for example 9003-04-7 and 9005-38-3 which are their cas registry numbers., Ltd., Japan). Jpn. Tokkyo Koho JP 58042158 B4 17 Sep 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C05G003-00. APPLICATION: JP 73-63403 7 Jun 1973. DOCUMENT TYPE: Patent CA Section: 19 (Fertilizers, Soils, and Plant Nutrition) Addn. of emulsion stabilizers (e.g., Na alginate [9005-38-3], poly(vinyl alc.) [9002-89-5], Na polyacrylate [9003-04-7], CM cellulose [9004-32-4]) prevents crystn. of water-sol. alkali earth metal nitrates in a liq. fertilizer formulation. Thus, a compn. contg. Ca(NO3)2.4H2O 42.7, Mg(NO3)2.6H2O 17.7, and NH4H2PO4 8.1 parts was dissolved in water to 2%, and to this CM cellulose was added to 0.25%. The soln. was fluid at 0° and 40° and no crystn. was obsd. .

A kinetic model for heterogeneous acetalization of poly(vinyl alcohol)

A kinetic model for heterogeneous acetalization of poly(vinyl alcohol). Raghavendrachar, P.; Chanda, M. (Dep. Chem. Eng., Indian Inst. Sci., Bangalore 560012, India). Eur. Polym. J., 20(3), 257-63 (English) 1984. CODEN: EUPJAG. ISSN: 0014-3057. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) A model for heterogeneous acetalization of poly(vinyl alc.) [9002-89-5] with limited soln. vol. was proposed based the grain model of H. Y. Sohn and J. Szekely (1972). Instead of treating the heterogeneous acetalization as purely a diffusion process, as in the Matuzawa-Ogasawara model (1972), the Sohn-Szekely model also accounted for the chem. reaction and the phys. state of the solid polymer, such as degree of swelling and porosity, and assumed segregation of the polymer phase at higher conversion into an outer fully reacted zone and an inner zone where the reaction still proceeds. The soln. There are some commonly used reagents like 9002-89-5 in this article. of the model for limited soln. vol., moreover, offered a simple method of detg. the kinetic parameters and diffusivity for the solid-liq. system using the easily measurable bulk soln. concn. of the liq. reactant instead of conversion-distance data for the solid phase, which were considerably more difficult to obtain. .