Marmifera Mineraria s.r.l. > Prodotti > Calcium Carbonates > Ultrafine white max amorphous Calcium Carbonate

Micronized white natural Calcilutite MICROCRYSTALLINE (Amorphous – MEUDON like) of excellent quality among the top in its class.
Among the distinctive features of this white max cryptocrystalline calcium carbonate we can list:

• Uniform size distribution: provides an excellent consistency and mixing regularity homogenizing and integrating the features of products with which it is mixed;
• Low bulk density;                    
• Very high covering due to the special chemical and physical structure;
• Very low absorption of oils and resins that allows a binders sparing effect;
• High White Point;                    
• Thixotropic behavior thanks to the constant and small amount of colloidal clay, such as kaolinite.

This is a pure calcilutite with high resistance to weather conditions, which does not react negatively in the various applications.

Primary applications

Indoor water-based paints, temperas, glossy and semi-glossy enamels, putties and adhesives, P.V.C. and / or Rubber compounds, paper industries, insulating bottoms etc.

AMORPHOUS 10 White Max

Chemical analysis
CaCO3 > 98,0%

Particle size analysis 
90% smaller of 13,05 µm

Bacteriological tests   
Absence of organic substances
Walkley – Black method ( < 0,01 g/kg)

Luminance: Y 91,67%
Color coordinates x=0,3148 y=0,3212 (MgO=100)

Physical - Chemical Characteristics
Specific gravity (granulate) 2,713 kg/dm3
Apparent specific gravity (without settlement) 0,650 kg/dm3
Apparent specific gravity (with settlement) 1,014 kg/dm3
Feature of the particles: Microcrystalline
Hardness(Mohs) (of granulate) 3
Oil absorption (linseed oil) 23,6%
Water absorption (distilled) 24,9%

AMORPHOUS 20 White Max

Chemical analysis
CaCO3 98,01%

Particle size analysis
90% smaller of 15,00 µm

Bacteriological tests   
Absence of organic substances
Walkley – Black method( < 0,01 g/kg)

Luminance: Y 91,67%
Color coordinates x=0,3148 y=0,3212 (MgO=100)

Physical - Chemical Characteristics
Specific gravity (granulate) 2,713 kg/dm3
Apparent specific gravity (without settlement) 0,650 kg/dm3
Apparent specific gravity (with settlement) 1,014 kg/dm3
Feature of the particles: Microcrystalline
Hardness(Mohs) (of granulate) 3
Oil absorption (linseed oil) 23,6%
Water absorption (distilled) 24,9%

AMORPHOUS 40 White Max

Chemical analysis
CaCO3 98,01%

Particle size analysis
Max diameter: 100% smaller of 40,00 µm

Bacteriological tests
Absence of organic substances
Walkley – Black method( < 0,01 g/kg)

Luminance: Y 90,86%
Color coordinates x=0,3150 y=0,3214 (MgO=100)

Physical - Chemical Characteristics
Specific gravity (granulate) 2,713 kg/dm3
Apparent specific gravity (without settlement) 0,763 kg/dm3
Apparent specific gravity (with settlement) 1,118 kg/dm3
Feature of the particles: Microcrystalline
Hardness(Mohs) (of granulate) 3
Oil absorption (linseed oil) 20,80%
Water absorption (distilled) 24,70%

AMORPHOUS 85 White Max

Chemical analysis
CaCO3 98,01%

Particle size analysis
90% smaller of 68,79 µm

Bacteriological tests   
Absence of organic substances
Walkley – Black method( < 0,01 g/kg)

Luminance: Y 91,67%
Color coordinates x=0,3148 y=0,3212 (MgO=100)

Physical - Chemical Characteristics
Specific gravity (granulate) 2,684 kg/dm3
Apparent specific gravity (without settlement) 1,047 kg/dm3
Apparent specific gravity (with settlement) 1,246 kg/dm3
Feature of the particles: Microcrystalline
Hardness(Mohs) (of granulate) 3
Oil absorption (linseed oil) 15,6%
Water absorption (distilled) 16,0%

The above is informative. Therefore the user is recommended to do tests and processing controls.
Special attention should be paid to the moisture absorbed by the material, post production, because of its hygroscopicity consequence of the high % of fine particles contained in it.