Tin(II) oxide powder for replenishing tin component of tin-alloy plating solution and method for manufacturing said powder
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United States of America Patent
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Aug 18, 2015
Grant Date -
May 8, 2014
app pub date -
May 8, 2012
filing date -
May 10, 2011
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Abstract
An object and a problem of the present invention is to provide tin(II) oxide powder which has extremely high solubility in an acid or an acidic plating solution and excellent in storage stability in the air. The tin(II) oxide powder of the present invention is for replenishing a tin component of a tin-alloy plating solution, and comprises 100 to 5000 ppm of an antioxidant being contained in the powder with a mass ratio, and has such a dissolution rate that when 0.1 g of the tin(II) oxide powder is added to 100 ml of 100 g/L aqueous alkylsulfonic acid solution at a temperature of 25° C. and stirred, then the powder dissolves therein within 180 seconds.
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