Imerys NYAD® G Special Wollastonite

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Imerys NYAD® G Special Wollastonite
Categories:	Ceramic; Oxide; Silicon Oxide; Other Engineering Material; Additive/Filler for Polymer
Material Notes:	Wollastonite (calcium metasilicate, or CaSiO3) is a naturally occurring white, non-metallic mineral with an acicular or needle-shaped crystal structure. This distinctive property makes wollastonite an ideal performance mineral for a broad range of industrial and consumer applications. .Information provided by NYCO Minerals, subsequently acquired by Imerys.
Key Words:	Calcium Metasilicate, CaSiO₃, CaSiO3
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Physical Properties	Metric	English	Comments

Specific Gravity	2.90 g/cc	2.90 g/cc
Bulk Density	0.368 g/cc	0.0133 lb/in³	loose
	0.721 g/cc	0.0260 lb/in³	Tapped
Brightness	85 %	85 %	G.E. Brightness
Oil Absorption	47 %	47 %
Solubility of Water	0.0095 %	0.0095 %
Particle Size	45 µm	45 µm	D50
pH	9.9	9.9	10% Slurry
Molecular Weight	116 g/mol	116 g/mol

Mechanical Properties	Metric	English	Comments
Hardness, Mohs	4.5	4.5

Thermal Properties	Metric	English	Comments
CTE, linear	6.50 µm/m-°C @Temperature 20.0 °C	3.61 µin/in-°F @Temperature 68.0 °F
Melting Point	1410 °C	2570 °F	ASTM D1857
	1540 °C	2800 °F	theoretical

Optical Properties	Metric	English	Comments
Refractive Index	1.63	1.63

Component Elements Properties	Metric	English	Comments
Al2O3	0.34 %	0.34 %
CaO	46.21 %	46.21 %
Fe2O3	0.77 %	0.77 %
K2O	0.050 %	0.050 %
Loss on Ignition(%)	0.050 %	0.050 %
MgO	0.38 %	0.38 %
MnO	0.16 %	0.16 %
SiO2	51.6 %	51.6 %
TiO2	0.050 %	0.050 %

Descriptive Properties
Appearance	White
Aspect Ratio (L/D)	20:1
Morphology	Acicular

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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CNYCO07 / 1689

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