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EC number: 231-900-3
CAS number: 7778-18-9
For calcium sulfate dihydrate, the D10, D50, and D90 for particle size
with wet way in µm were 26.2 63.2 and 124 respectively.
There is no "standard particle size
distribution for calcium sulfate. Calcium sulfates can exist in a
variety of granulometries. In some cases , the particle size
distribution is given by a grinding process , in others , it is a
- natural gypsum is often a
mixture of blocs ( sometimes 10 -100 cm size) and powder witha very
broad distribution difficult to characterize
- synthetix gypsum such as FGD
has usually a nearly monogranular particle size distribu tion centered
somewhere between 30 and 100 microns
- after grinding , stucco can
show very different particle size distributions , from very fine with an
average particle size of 10 micron or less such as the stucco used for
bandages to coarser products used for bonding compounds with usually
average particle sizes of 100 microns or more
The study included is a typical
distribution of what can be obtained with a synthetic gypsum
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