Array ( [status] => 200 [status_message] => Material item [data] => Array ( [material_id] => 3112 [moddate] => 2018-08-14 22:19:10 [name] => VanTalc [keywords] => Hydrous Magnesium Calcium Silicate [metadescrip] => [chem_formula] => [casnumber] => 14807-96-6 [searchkey] => [unity] => [ratio] => [ord] => [minedat] => [volatiles] => Array ( [LOI] => 5.50 ) [analysis] => Array ( [CaO] => 0.40 [MgO] => 31.00 [Na2O] => 0.10 [Al2O3] => 1.00 [SiO2] => 61.00 [Fe2O3] => 1.30 ) [weight] => 121.85500377658 [formulaweight] => 128.94709394347 [LOI] => 5.5 [formula] => Array ( [CaO] => 0.01 [MgO] => 0.99 [Na2O] => 0.00 [Al2O3] => 0.01 [SiO2] => 1.30 [Fe2O3] => 0.01 ) [notes] => No longer available. VANTALC talcs were high purity, platy talcs from Montana. A wide range of particle sizes are available from VANTALC 2000 to 4500. This talc has been recommended as a substitute for NYTal Talc which is no longer available. The chemistry of the two talcs is quite different, especially for CaO. VanTalc is much closer to the chemistry of theoretical talc, actually it is incredibly close, having almost no CaO whereas NYTalc had 8%. However NyTalc had much lower iron than VanTalc. [links] => Array ( [material] => Array ( [0] => Array ( [link] => material/Talc [label] => Talc [keywords] => A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite. [ord] => 0 ) [1] => Array ( [link] => material/Nytal+Talc [label] => Nytal Talc [keywords] => [ord] => 0 ) ) [hazard] => Array ( [0] => Array ( [link] => hazard/Talc+Hazards+Overview [label] => Talc Hazards Overview [metadescrip] => 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? [ord] => 0 ) ) [supplier] => Array ( [0] => Array ( [link] => supplier/Vanderbilt+Minerals%2C+LLC [label] => Vanderbilt Minerals, LLC [ord] => 0 ) ) ) ) ) VanTalc

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Materials for Ceramics

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VanTalc

Description: Hydrous Magnesium Calcium Silicate

Oxide	Analysis	Formula
CaO	0.40%	0.01
MgO	31.00%	0.99
Na2O	0.10%	-
Al2O3	1.00%	0.01
SiO2	61.00%	1.30
Fe2O3	1.30%	0.01
LOI	5.50%	n/a
Oxide Weight		121.86
Formula Weight		128.95

Notes

No longer available.

VANTALC talcs were high purity, platy talcs from Montana. A wide range of particle sizes are available from VANTALC 2000 to 4500.
This talc has been recommended as a substitute for NYTal Talc which is no longer available. The chemistry of the two talcs is quite different, especially for CaO. VanTalc is much closer to the chemistry of theoretical talc, actually it is incredibly close, having almost no CaO whereas NYTalc had 8%. However NyTalc had much lower iron than VanTalc.

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.
Materials	Nytal Talc
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?

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