satin white
A paper filler prepared from aluminum sulfate (Al
2 SO 4 ) 3 ) and
calcium hydroxide (slaked lime) (CaOH)
2 ). It is used as a coating pigment in
coating mixtures, particularly in coated paper of
high white color requiring an enamel finish. Satin
white is difficult to handle, and does not keep
well; therefore it is usually prepared immediately
before use. Very close control of its preparation
is necessary to obtain fully satisfactory results.
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