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Quick Answer — Micronized Calcium Carbonate (Ultra-Fine Powder 2 Micron / 1250 Mesh)

Micronized Calcium Carbonate is an ultra-fine 2-micron (1250 mesh) mineral powder designed for applications requiring high surface area, rapid wet-out dispersion, and glass-smooth surface finish in Kenya.

Micronized Calcium Carbonate is an ultra-fine 2-micron (1250 mesh) mineral powder designed for applications requiring high surface area, rapid wet-out dispersion, and glass-smooth surface finish in Kenya.

Key Facts

  • Particle Size Distribution: d50 ≤ 2.0 μm (1250 Mesh) | Brightness: ≥ 96.0%
  • CAS Number: 471-34-1 | High surface area with ultra-low grit residue
  • Delivers silky smooth surface finish without grittiness in fine paints & sealants
  • Improves tensile strength & sag resistance in polyurethane & silicone caulks
  • Supplied in 25kg PE-Lined Valve Paper Bags from Nairobi Industrial Area Warehouse

Primary Use Cases

Ultra-fine extender pigment in high-gloss architectural paints & silk wall finishesRheology modifier & reinforcing filler in silicone sealants, polyurethane adhesives & caulksSurface finish enhancer in fine rubber compounding & specialized plastic films
Micronized Calcium Carbonate (Ultra-Fine Powder 2 Micron / 1250 Mesh)
Inorganic ChemicalsOut of Stock

Micronized Calcium Carbonate (Ultra-Fine Powder 2 Micron / 1250 Mesh)

Product Code: KIC-INO-001

Also known as: Ultra-Fine Calcium Carbonate, Micronized Limestone, Micro-GCC

Synonyms: Sub-micron CaCO3, Ultrafine Calcite Powder, High-Dispersibility Calcium Carbonate

Ultra-fine micronized calcium carbonate powder (2-5 micron) engineered for high-performance plastics, premium coatings, rubber, and adhesives in East Africa.

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 Powders
Grade
Ultra-Fine Technical Grade (D50 < 2.0 Micron)
Purity
99.0% min CaCO3
Physical Form
Ultra-Fine Micronized Powder

Available Packaging

25kg Kraft Paper Bag with Inner PE Liner1,000kg Bulk Bag

Product Overview

Micronized Calcium Carbonate is an ultra-fine mineral powder processed through advanced wet/dry micro-grinding technology. Featuring tight particle size control and ultra-high brightness (97%+), it acts as a specialty reinforcing filler and functional extender in high-spec industrial applications.

Technical Description

Ultra-pure calcite mineral milled to sub-5 micron particle size. High chemical purity (99.0% CaCO3 min, Fe2O3 < 0.03%) eliminates color contamination and degradation in sensitive polymer, paper, and coating matrices.

Complete Chemical Specifications

CaCO3 Assay
99.0% min
ISO Whiteness
97.0% min
Median Particle Size D50
1.2 – 2.0 microns
Top Cut D98
5.0 microns max
Fe2O3 Content
0.03% max
Oil Absorption
20 – 24 g/100g
Moisture Content
0.15% max

Physical & Chemical Properties

Appearance
Pure white, soft, micro-fine powder
Odour
Odorless
pH
8.8–9.6
Density
2.71 g/cm³
Melting Point
825 °C (decomposes)
Solubility
Insoluble in water and organic solvents

Commercial Availability

Stock Status
In Stock
Lead Time
1-2 business days in Nairobi; dispatch to Uganda, Tanzania, Rwanda
MOQ
500 kg
Delivery Regions
Kenya, Uganda, Tanzania, Rwanda, South Sudan

Specify your required micron top-cut (e.g. 2 micron, 5 micron) for application-tailored batch selection.

Suitable Applications

Target Industries

Use Cases

  • High-gloss film & thin-wall plastic packaging manufacturing
  • Premium automotive coatings & high-grade enamel finishes
  • Specialty rubber compounds, gaskets & footwear soles
  • High-tack adhesives, sealants & polyurethane mastics

Storage Guidelines

Store in sealed original packaging in dry, moisture-controlled storage areas to preserve powder fluidity.

Handling Advisory

Fine particulate matter can airborne easily. Dust extraction system and P2 dust respirators recommended during bulk charging.

Safety & Chemical Handling Advisory

Safety Advisory

Flush eyes with abundant water. Move individual to fresh air if dust inhaled.

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

Hazard Statements

  • Inhalation of fine dust may cause transient respiratory tract irritation

Precautionary Statements

  • Use local exhaust ventilation to keep dust concentrations below exposure limits

PPE Requirements

P2/N95 Dust RespiratorGogglesProtective Gloves

COMMERCIAL & TECHNICAL GUIDANCE

Frequently Asked Questions — Micronized Calcium Carbonate (Ultra-Fine Powder 2 Micron / 1250 Mesh)

Technical, regulatory, and supply guidance for Micronized Calcium Carbonate (Ultra-Fine Powder 2 Micron / 1250 Mesh).

Micronized Calcium Carbonate is ground limestone processed to an ultra-fine particle size where 50% of particles are smaller than 2 microns (1250 mesh).

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