4392 Rosa Blanca

Description: Talc

Oxide	Analysis	Formula
CaO	1.28%	0.04
K2O	0.04%	-
MgO	22.17%	0.96
Na2O	0.03%	-
Al2O3	5.56%	0.09
SiO2	54.45%	1.58
Fe2O3	0.43%	-
LOI	15.60%	n/a
Oxide Weight		146.31
Formula Weight		173.35

Notes

CAS No. 14807-96-6

Water Solubles: 0.12%
Fired Brightness: 85+
Dry Brightness: 80-84
Loose Bulk Density (lbs/ft): 37.5
Tapped Bulk Density (lbs/ft): 75.7
Oil Absorption: 18.6
Through 200 mesh, %: 92.0
Through 325 mesh, %: 70.0
Shrinkage: 0.60

Related Information

Links

Materials	Talc A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite.
Hazards	Talc Hazards Overview Talc is invaluable in the ceramics industry, it is used as a glaze and body ingredient and as a parting a release agent in various processes. Is it safe?
Typecodes	Flux Source Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.

Data

Density (Specific Gravity)	2.85

By Tony Hansen
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