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Quick Answer — Calcium Carbonate for Paints & Coatings (High Whiteness Extender)

Calcium Carbonate for Paints & Coatings is a refined, high-whiteness mineral extender filler used by decorative paint manufacturers in Kenya to increase paint opacity, improve scrub resistance, control gloss, and lower raw material costs.

Calcium Carbonate for Paints & Coatings is a refined, high-whiteness mineral extender filler used by decorative paint manufacturers in Kenya to increase paint opacity, improve scrub resistance, control gloss, and lower raw material costs.

Key Facts

  • Purity: CaCO3 ≥ 98.5% min | Brightness / Whiteness: ≥ 94.0%
  • CAS Number: 471-34-1 | Controlled particle size distribution
  • Extends expensive Titanium Dioxide (TiO2) pigment in emulsion paints
  • Improves scrubbability, viscosity stability & film opacity in wall paints
  • Supplied in 50kg Heavy PP Bags from Nairobi Industrial Area Warehouse

Primary Use Cases

Extender pigment in interior & exterior architectural latex emulsion paintsOpacity & bodying filler in decorative primers, undercoats & textured wall finishesRheology & sheen control agent in matte & semi-gloss industrial coatings
Calcium Carbonate for Paints & Coatings (High Whiteness Extender)
Paint & Coating ChemicalsOut of Stock

Calcium Carbonate for Paints & Coatings (High Whiteness Extender)

Product Code: KIC-PNT-001

Also known as: Paint Extender, Whiting Powder, Ground Calcium Carbonate (GCC) Paint Grade

Synonyms: Chalk Powder, Coatings Mineral Filler, Calcium Carbonate Pigment Extender

High-whiteness fine calcium carbonate extender pigment for emulsion paints, primers, architectural coatings, and wood finishes in Kenya.

CAS Number
471-34-1
Formula
CaCO3
IUPAC Name
Calcium carbonate
Molecular Weight
100.09 g/mol
EC Number
207-439-9
Chemical Family
Inorganic Mineral Fillers
Grade
Paint & Coatings Fine Extender Grade
Purity
98.5% min CaCO3
Physical Form
Fine White Powder

Available Packaging

25kg Multi-Wall Paper Bag50kg Woven Bag1,000kg Jumbo Bag

Product Overview

Calcium Carbonate for Paints & Coatings serves as an economical titanium dioxide extender pigment that enhances opacity, dry scrub resistance, sheen control, and rheological viscosity in water-based latex emulsion paints, solvent-borne enamels, and textured wall finishes.

Technical Description

Processed from high-purity natural marble/calcite deposits to achieve high brightness (Whiteness > 96%) and narrow particle size distribution. Exhibits low oil absorption for optimum binder efficiency and scrub durability.

Complete Chemical Specifications

CaCO3 Content
98.5% min
Brightness / Whiteness
96.0% min
Mean Particle Size (D50)
3.0 – 5.0 microns
Residue on 45µm Sieve (325 mesh)
0.05% max
Oil Absorption (Linseed Oil)
18 – 22 g/100g
Specific Gravity
2.70 – 2.72
Moisture (105°C)
0.3% max

Physical & Chemical Properties

Appearance
Brilliant white fine powder
Odour
Odorless
pH
8.5–9.5 (aqueous suspension)
Density
2.71 g/cm³
Melting Point
825 °C (decomposes)
Solubility
Insoluble in water and organic paint solvents

Commercial Availability

Stock Status
In Stock
Lead Time
Immediate dispatch in Nairobi; 2-3 days across Kenya and East Africa
MOQ
500 kg (20 bags)
Delivery Regions
Kenya, Uganda, Tanzania, Rwanda

Inquire with your target paint formulation PVC (Pigment Volume Concentration) for recommendation on micron size.

Suitable Applications

Target Industries

Use Cases

  • Interior & exterior architectural emulsion paint formulation
  • Alkyd enamel gloss and matt paint extender
  • Textured wall finishes and skim coat wall putty
  • Industrial primer and wood coating filler

Storage Guidelines

Store in dry indoors conditions. Protect paper bags from rain, high humidity, and direct ground contact.

Handling Advisory

Use dust mask during high-speed disperser charging to control airborne particulate levels.

Safety & Chemical Handling Advisory

Safety Advisory

Rinse eyes with clean water. In case of inhalation, move to fresh air.

GHS:Non-hazardous chemical
Signal Word:None
Transport:Not classified for transport
Packing Group:N/A

Hazard Statements

  • May irritate eyes and upper respiratory tract mechanically

Precautionary Statements

  • Wear dust mask when opening bags in paint mixing plants

PPE Requirements

Dust MaskSafety GlassesProtective Apron

COMMERCIAL & TECHNICAL GUIDANCE

Frequently Asked Questions — Calcium Carbonate for Paints & Coatings (High Whiteness Extender)

Technical, regulatory, and supply guidance for Calcium Carbonate for Paints & Coatings (High Whiteness Extender).

In paint manufacturing, calcium carbonate acts as a white extender pigment that provides opacity, controls sheen, improves scrub resistance, and extends expensive titanium dioxide.

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