Reference

Phosphoric acid

Phosphoric acid. Novikov, A. A.; Klassen, P. V.; Grinevich, A. V.; Lembrikov, V. M.; Voroshin, V. A.; Voronina, I. 7664-93-9 and 7697-37-2 are cas registry numbers. These chemicals are also mentioned in this article. A.; Emelin, V. P.; Nikitin, V. G. (USSR ). U.S.S.R. SU 1057414 A1 30 Nov 1983 From: Otkrytiya, Izobret., Prom. Obraztsy, Tovarnye Znaki 1983, (44), 91. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: C01B025-226. APPLICATION: SU 82-3412918 26 Mar 1982. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) H3PO4 is manufd. by treatment of phosphate rock with recycled H3PO4, HNO3, and H2SO4 at increased temps., CaSO4 crystn. with subsequent product sepn. from the CaSO4 slurry by filtration, washing and recovery of the wash water in the treatment as usable H3PO4. The processing of coarsely ground ore with effective product sepn. and CaSO4 washing is ensured by treating and crystg. at 60-80° with a 1:8-23 molar ratio of HNO3 and H2SO4 in the liq. phase of the slurry. .

Industrial product for preventing scale in steam flatirons, steam pressure boilers and industrial steam boilers, and the use of this product in flatirons and boilers

Industrial product for preventing scale in steam flatirons, steam pressure boilers and industrial steam boilers, and the use of this product in flatirons and boilers. Foucart, Patrick; Lagier, Pierre (Fr.Several substances are used for example 88024-99-1 and 10043-35-3 which are their cas registry numbers. ). Fr. Demande FR 2522318 A1 2 Sep 1983,7 pp. (French). (France). CODEN: FRXXBL. CLASS: IC: C02F005-00; D06F071-34; D06F075-14; F22B037-00; F28F019-00. APPLICATION: FR 82-3201 26 Feb 1982. DOCUMENT TYPE: Patent CA Section: 61 (Water) An industrial product for scale control in steam systems comprises a mixt. (pure or in aq. soln.) of a complexing acid or salt (e.g., sulfamic acid [5329-14-6]), a complexing scale control agent (e.g., sodium tripolyphosphate [7664-38-2]), a wetting agent (e.g., a quaternary ammonium salt), an emulsifying agent (e.g., polyethyleneglycol oleate complex [9004-96-0]), a corrosion inhibitor (e.g., thiourea [62-56-6]), and possibly a perfume mixed with phenoxyethanol [122-99-6]. .