Satin white

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1) An old unstandardized term that has been used for Gypsum.

2) More recently, the term satin white has been used for a bulky, opaque, white paper filling material. This filler, also called calcium sulfoaluminate, is made by the reaction of Aluminum sulfate, Hydrated lime and potash alum.

Physical and Chemical Properties


  • Particle size = about 1.5 x 0.15 (elongated crystals)
  • Refractive Index = 1.46

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