[PDF.85yn] ISO 6387:1983, Surface active agents -- Determination of the power to disperse calcium soap -- Acidimetric method (Modified Schoenfeldt method)

ISO 6387:1983, Surface active agents -- Determination of the power to disperse calcium soap -- Acidimetric method (Modified Schoenfeldt method)

[PDF.ns35] ISO 6387:1983, Surface active agents -- Determination of the power to disperse calcium soap -- Acidimetric method (Modified Schoenfeldt method)

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 |  2007-08-23 |  10.50 x.6 x8.25l, | File type: PDF | 24 pages

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A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titra...

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