Hubercarb® G2 is a high purity, ultra-fine ground calcium carbonate produced from a high brightness marble deposit in Georgia for applications that require high brightness or pure tints. Carefully controlled particle distribution allows G2 to be used in paints, coatings, PVC compounds, rubbers, plastics, and drilling fluids.

Functions: Filler, Flame Retardant

Chemical Family: Calcium Salts, Carbonates, Mica

Particle Size: 2.0 - 2.0 microns

Technical Data Sheet

Similar Products

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Name
CASE Ingredients Functions
CAS No.
471-34-1
EC No.
207-439-9
Technologies

Applications & Uses

Properties

Physical Form
Chemical Properties
ValueUnitsTest Method / Conditions
Calcium Carbonate96.0%
Magnesium Carbonate2.5%
Silica and Silicates0.4%
Other1.1%
Physical Properties
ValueUnitsTest Method / Conditions
Acid Solubility (in HCl)95 - 98.5%
Brightness (Hunter reflectance)95.0%
Compacted Bulk Density55lb/ft³ASTM C110
Loose Bulk Density39lb/ft³ASTM C110
Mesh size (+325) (45μm)0.005%
Median Particle Size (Sedigraph®)2.0μ
OIl Absorption19.0lbs oil / 100lbsASTM D281
Hegman Grind6.5
Moisture0.2%ASTM D280
Water Demand69.0ml/100g
Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity2.7ASTM D153
ColorWhite
pH (Saturated Solution)9.4ASTM D1208
Mineral Properties
ValueUnitsTest Method / Conditions
Hardness (Mohs)3
Linear Expansion Coefficient4.3 x 10^-6°C
Solubility (H₂O, 100°C)0.0035g/100ml
Weight per Gallon (s.g. x 8.345)22.6lbs
Particle Shape (Microscope)Irregular, uniaxial
Refractive Index (Hand. Of Chem. & Phy)1.6
Alkalinity (as NaOH)0.4mg/gmASTM D1208