Calcium Carbonate

High-purity ASCOM ground calcium carbonates for paint, paper, plastics and masterbatch, ranging from coarse calcite chips to ultrafine coated grades.

Grades stocked 9
D50 range 0.75 – 2200 µm
Brightness up to 98.5 Ry / L*
Surface Coated & uncoated
Specifications

Grade & Table Specifications

The table below will help you find the right calcium carbonate grade for your application. Compare particle size (D50 and % < 2 microns) to match the fineness you need, and brightness (Ry) to match the whiteness your formulation calls for. If you’re not sure which grade fits, request the technical data sheet using the links below the table, or get in touch with a Serina team member for guidance on grade selection and availability.

Grade Type Brightness (Ry) % <2 microns D50, microns Applications Stocked In
G3000 calcite chips white in colour n.a. 2200 Plastics Construction DBN & CPT
ASCOM 10 powder 95 20 7 Paint & Coatings Plastics DBN & CPT
ASCOM 5 powder 95.9 26.5 4 Paint & Coatings Plastics Paper DBN, JHB & CPT
ASCOM 2 powder 96.5 50 2 Paint & Coatings Plastics DBN, JHB & CPT
IOKAL ULTRAFINE powder 98.5 (L*) 90 0.75 Paper DBN & CPT
ASCOM 30T coated 96.1 30 4 Masterbatch & PVC DBN & CPT
ASCOM 50T coated 96.5 50 2 Masterbatch & PVC DBN
IOKALIT Extra Fine (1.1) coated 96 80 1.1 Masterbatch & PVC #
IOKALIT Extra Fine (0.75) coated 96 90 0.75 Masterbatch & PVC #

# = Not in SA but can be ordered in FCLs (Full Container Loads)

technical highlights

Key Performance Benefits

High Brightness & Whiteness

Supports opacity and appearance, and in paint, gives good packing and good whiteness.

Low Oil/Binder Absorption

Lets formulators load higher volumes of filler without a corresponding rise in binder demand, useful for high-PVC paint systems and cost control generally.

Cost-effective Bulking

An abundant and inexpensive filler relative to functional pigments, so when used correctly, it reduces raw material cost while maintaining performance.

Controlled, Fine Particle Size Distribution

Supports smoothness and gloss control in paint, printability and brightness in paper coating. Steric acid-coated grades give consistent dispersion and good processibility in PVC pipes and in plastics/masterbatch compounding.

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Not sure which grade fits your formulation?

Get in touch with one of our experts who will guide you on our different product grades and which will be best suited to your application.

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Technical Data Sheet

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