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Quick Answer — Calcium Carbonate for Plastic & PVC Pipe Extrusion Manufacturing

Calcium Carbonate for Plastic & PVC is a surface-treated, ultra-fine mineral filler used by plastics manufacturers in Kenya to increase impact strength, dimensional stability, and extrusion output in PVC pressure pipes, conduit, and masterbatch compounding.

Calcium Carbonate for Plastic & PVC is a surface-treated, ultra-fine mineral filler used by plastics manufacturers in Kenya to increase impact strength, dimensional stability, and extrusion output in PVC pressure pipes, conduit, and masterbatch compounding.

Key Facts

  • •Purity: CaCO3 ≥ 98.5% min | Surface Treatment: Stearic Acid Coated
  • •CAS Number: 471-34-1 | Hydrophobic coating ensures seamless polymer integration
  • •Increases flexural modulus, heat deflection temperature & pipe impact resistance
  • •Protects extruder screws from abrasive wear while lowering resin compound costs
  • •Supplied in 25kg PE-Lined Bags from Nairobi Industrial Area Warehouse

Primary Use Cases

Extrusion mineral filler in rigid PVC pressure pipes, electrical conduits & drainage pipesHigh-concentration filler masterbatch production for polypropylene & polyethylene blown filmDimension stabilizer in PVC window profiles, trunking & cable insulation compounds
Calcium Carbonate for Plastic & PVC Pipe Extrusion Manufacturing
Plastic & Polymer AdditivesOut of Stock

Calcium Carbonate for Plastic & PVC Pipe Extrusion Manufacturing

Product Code: KIC-PLAS-001

Also known as: PVC Filler, Coated Calcium Carbonate, Stearic Acid Treated CaCO3

Synonyms: Precipitated Calcium Carbonate (PCC), Surface Modified Limestone, Plastic Extrusion Filler

Surface-treated coated calcium carbonate filler optimized for PVC pipe extrusion, masterbatches, profile compounding, and thermoplastic manufacturing 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 Carbonates
Grade
Plastics & Extrusion Grade (Stearic Acid Coated / Uncoated)
Purity
98.5% min CaCO3
Physical Form
Ultra-Fine Powder

Available Packaging

25kg Paper-Plastic Composite Moisture Proof Bag1,000kg Jumbo Bulk Bag
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Product Overview

Calcium Carbonate for Plastic & PVC Manufacturing acts as a functional filler that reduces resin consumption while enhancing impact strength, dimensional stability, heat resistance, and surface finish in rigid PVC pipes, fittings, conduit, cable compounds, and masterbatches.

Technical Description

Micro-ground calcium carbonate surface-modified with stearic acid coupling agents to ensure superior hydrophobic dispersion in PVC, Polyethylene (PE), and Polypropylene (PP) matrices. Low oil absorption minimizes plasticizer consumption.

Complete Chemical Specifications

CaCO3 Content
98.5% min
Stearic Acid Coating
1.0% – 1.2% active coating
Whiteness (R457)
95.0% min
D50 Average Particle Size
1.5 – 2.5 microns
D97 Top Cut
8.0 – 10.0 microns
DOP Oil Absorption
16 – 20 g/100g
Moisture Content
0.2% max

Physical & Chemical Properties

Appearance
Bright white ultra-fine free-flowing powder
Odour
Odorless
pH
8.8–9.6
Density
2.71 g/cm³ (Bulk density: 0.8–1.1 g/cm³)
Melting Point
825 °C (decomposes)
Solubility
Insoluble in water and polymer melts

Commercial Availability

Stock Status
In Stock
Lead Time
1-2 business days in Nairobi industrial area; express dispatch to East Africa
MOQ
1,000 kg (40 bags)
Delivery Regions
Kenya, Uganda, Tanzania, Rwanda, DRC

Specify whether stearic acid coated or uncoated grade is required for your extrusion or compounding line.

Suitable Applications

PVC Pipe Extrusion FillerThermoplastic Compound Modification

Target Industries

Plastics & PVC Manufacturing

Use Cases

  • •Rigid PVC pipe and fitting extrusion formulation
  • •uPVC window profile and trunking manufacturing
  • •PE and PP filler masterbatch production
  • •Calendered PVC flooring and synthetic leather sheets

Storage Guidelines

Store in clean, dry ambient conditions. Avoid exposure to high humidity or moisture which can cause caking and affect dispersion in polymer melts.

Handling Advisory

Dust mask and protective eyewear recommended during powder transfer to extruder hoppers.

Safety & Chemical Handling Advisory

Safety Advisory

Flush eyes thoroughly with clean water. Remove to fresh air if inhaled.

GHS:Non-hazardous substance
Signal Word:None
Transport:Non-regulated cargo
Packing Group:N/A

Hazard Statements

  • • Inhalation of high dust concentrations may cause mild airway irritation

Precautionary Statements

  • • Ensure adequate local exhaust ventilation at feeding hoppers

PPE Requirements

Dust Mask (N95)Safety GlassesIndustrial Gloves

COMMERCIAL & TECHNICAL GUIDANCE

Frequently Asked Questions — Calcium Carbonate for Plastic & PVC Pipe Extrusion Manufacturing

Technical, regulatory, and supply guidance for Calcium Carbonate for Plastic & PVC Pipe Extrusion Manufacturing.

Stearic acid surface coating renders the hydrophilic mineral hydrophobic, allowing perfect dispersion in PVC resin matrix without agglomeration, reducing extruder torque and screw wear.

Alternative Products

Micronized Calcium Carbonate

Complementary Products

Cyclohexanone 99.9%

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