Huber Hubercarb® Q4 Calcium Carbonate Powder

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Huber Hubercarb® Q4 Calcium Carbonate Powder
Categories:	Ceramic
Material Notes:	Hubercarb® Q Series products are mined and manufactured in Quincy, IL, USA and include fine, medium-fine and granular particle size calcium carbonates. Uses include cat litter to concrete to paint to plastics. Select Hubercarb Q products are also produced to meet the requirements for animal feed applications, providing a cost-effective source of calcium from the high purity limestone ore. Information provided by Huber Engineered Materials.
Key Words:	CaCO3
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Physical Properties	Original Value	Comments

Specific Gravity	2.70 g/cc	ASTM D-153
Bulk Density	40.0 lb/ft³	Compacted; ASTM C-110
	60.0 lb/ft³	Loose; ASTM C-110
Brightness	88 %	Dry, Hunter Reflectance
Oil Absorption	17 %	ASTM D-281
Solubility in Water	0.0035 % @Temperature 100 °C
Moisture Absorption	0.200 %	ASTM D-280
Particle Size	4.3 µm	Median, SediGraph
Particle Mesh Size	325 Mesh	Residue < 0.005%
pH	9.4	saturated solution; ASTM D-1208

Mechanical Properties	Original Value	Comments
Hardness, Mohs	3.0	relatively non-abrasive

Thermal Properties	Original Value	Comments
CTE, linear	4.30 µm/m-°C

Optical Properties	Original Value	Comments
Refractive Index	1.60

Descriptive Properties
Alkalinity	0.4 mg/gm	as NaOH, ASTM D-1208
Color	White
Composition, Calcium Carbonate (%)	96.5
Composition, Magnesium Carbonate (%)	1.5
Composition, Other (%)	2
Composition, Silicas and Silicates (%)	4.5
Hegman Grind	6	ASTM D-1210
Particle Shape	Irregular, uniaxial
Water Demand (ml/100g)	54	Water Demand

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