Reference

Chemical stripping of nickel deposits - a study of ethylenediamine based solutions

Chemical stripping of nickel deposits - a study of ethylenediamine based solutions. Natarajan, S. R.; Krishnan, R.; Sriveeraraghavan, S.; Udupa, H. V. K. (Cent. Electrochem. Res. Inst., Karaikudi 623006, India). Electroplat. Met. Finish., Proc. Natl. Conf., 2nd, Meeting Date 1981, 175-95. Edited by: Totlani, M. 11146-55-7 and 107-15-3 which are cas registry numbers are also used here. K.; Joshi, K. M. Soc. Adv. Electrochem. Sci. Technol.: Karaikudi, India. (English) 1983. CODEN: 51ALA3. DOCUMENT TYPE: Conference CA Section: 55 (Ferrous Metals and Alloys) Section cross-reference(s): 72 Dull or bright Ni electrodeposits and Ni-P alloy electroless deposits on steel were rapidly removed at 40-60° by a soln. consisting of ethylenediamine [107-15-3] 250, HNO3 60 mL/L, NH4NO3 50, and Na m-nitrobenzene sulfonate [127-68-4] 150 g/L. The HNO3 addn., causing ethylene diammonium dinitrate formation, appears to play an important role, esp. when lower quantities of ethylenediamine are used. The soln. is useful in prodn. practice for removal of defective Ni deposits from ferrous components without substrate attack. An adequate stripping rate is possible even with a ￡40 g Ni/L build-up in the soln. .

Cleaning of iron-containing metal articles

Cleaning of iron-containing metal articles. Gotsmann, Guenther; Glaser, Klaus (BASF A.-G., Ger.). Ger. 53040-67-8 and 110-65-6 are also occured in this study. Offen. DE 2507059 2 Sep 1976, 9 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C23G001-08. APPLICATION: DE 75-2507059 19 Feb 1975. DOCUMENT TYPE: Patent CA Section: 55 (Ferrous Metals and Alloys) Ferrous-metal articles are cleaned in a bath contg. a surfactant and an arom. oxidizing compd. Thus, heat-treated steel [12597-69-2] screws with oil on them were cleaned in a bath contg. 15% HCl, 8% of a polyethylene glycol-monobenzylphenylphenyl ether (I) [53040-67-8], 1% 2-butyne-1,4-diol [110-65-6], 1% CHCl:CCl2 [79-01-6], and 5% Na m-nitrobenzenesulfonate (II) [127-68-4], and the rest water. The wt. losses in 1 hr of St. 37.2 [58503-89-2] steel in 30% HCl contg. 5% I, 5% polyethylene glycol-monononylphenyl ether [9016-45-9], and 0, 0.5, 1, and 2% II were 0.625, 0.648, 0.705, and 0.739 g/dm2, resp. .