Calcium Carbonate Filler
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Calcium Carbonate Filler is a high-quality, uncoated ground calcium carbonate (GCC) specially engineered for use as a filler in polyethylene (PE) and other polyolefin resins. This grade of calcium carbonate is designed to enhance the physical and mechanical properties of plastics while providing cost-effective bulk and improved processing. It is a fine, white, odorless powder with excellent brightness, high purity, and uniform particle size distribution. Its use improves stiffness, impact resistance, dimensional stability, and surface finish in polyethylene applications such as films, sheets, pipes, and molded parts.
Description
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Calcium Carbonate Filler
Primary UsesÂ
- Polyethylene (PE) Industry
- Used as a mineral filler to increase the stiffness and rigidity of PE compounds.
- Enhances impact strength and dimensional stability of PE films and molded products.
- Improves surface finish and printability of plastic goods.
- Reduces raw material costs by replacing a portion of the polymer with calcium carbonate.
- Polyolefin Compounds
- Incorporated in polypropylene (PP) and other polyolefin resins as a reinforcing filler.
- Improves melt flow properties and reduces shrinkage during processing.
- Supports better filler dispersion and compatibility with polyolefin matrices.
- Plastic Extrusion and Injection Molding
- Used in extrusion of films, sheets, pipes, and profiles to improve mechanical strength and processability.
- Applied in injection molding of plastic parts for enhanced stiffness and aesthetic surface qualities.
Secondary UsesÂ
- Rubber and Adhesives
- Acts as a reinforcing and extending filler in some rubber and adhesive formulations.
- Paints and Coatings
- Occasionally used in coatings where polyethylene dispersions or blends are employed.
PRODUCT KEY FEATURES
Basic Identification Attributes
- Chemical Name (IUPAC): Calcium carbonate
- Common/Trade Name: Calcium Carbonate Filler PE F261
- CAS Number: 471-34-1
- HS Code: 2836.50.00
- Molecular Formula: CaCO₃
- Synonyms:
- Ground calcium carbonate (GCC)
- Limestone powder
- Calcium carbonate filler for plastics
2. Physical & Chemical Properties
- Physical State: Fine white powder
- Color & Odor: White; odorless
- Particle Size: Typically in micron range optimized for PE applications (usually 1–5 μm)
- Specific Surface Area: High, enhancing filler-polymer interaction
- Density: Approx. 2.7–2.8 g/cm³
- Solubility: Insoluble in water; soluble in acids with effervescence
- pH: Slightly alkaline when dispersed in water (pH ~9)
- Melting Point: Decomposes at ~825°C releasing CO₂
- Stability: Chemically stable under normal conditions
3. Safety & Hazard Attributes
- Hazard Class (GHS): Not classified as hazardous; nuisance dust
- NFPA Ratings:
- Health: 1
- Flammability: 0
- Reactivity: 0
- Exposure Limits: OSHA PEL for calcium carbonate dust: 15 mg/m³ (total dust)
- Toxicity: Low acute toxicity; inhalation of dust may cause respiratory irritation
- Reactivity: Stable; reacts with acids releasing carbon dioxide gas
4. Storage & Handling Attributes
- Storage Conditions: Store in a dry, cool, well-ventilated area to avoid moisture uptake
- Container Type: Bags, bulk containers, or silos with dust control
- Shelf Life: Indefinite if stored properly
- Special Handling: Use appropriate PPE; minimize dust generation
5. Regulatory & Compliance Attributes
- FDA Status: Approved as a filler in plastics, indirectly regulated for food contact applications depending on local regulations
- Transportation: Not classified as hazardous
- Waste Disposal: Dispose as non-hazardous industrial waste per local regulations
6. Environmental & Health Impact
- Ecotoxicity: Low; naturally occurring mineral with minimal environmental hazard
- Persistence: Persistent; chemically inert, not biodegradable
- Bioaccumulation: Not expected
- Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
- Biodegradability: Not biodegradable
SAFETY HANDLING PRECAUTIONS
 Safety Handling Precautions
Personal Protective Equipment (PPE):
- Dust mask or respirator (NIOSH-approved)
- Gloves
- Safety goggles
- Protective clothing
Handling Measures:
- Avoid inhalation of dust
- Use local exhaust ventilation or dust extraction systems
- Work in well-ventilated areas
Storage Measures:
- Store away from moisture and incompatible substances (strong acids)
- Keep containers tightly sealed
Hygiene Practices:
- Wash hands after handling
- Avoid eating, drinking, or smoking during handling
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if breathing difficulties persist
- Skin Contact: Wash with soap and water; seek medical advice if irritation occurs
- Eye Contact: Rinse thoroughly with water for 15 minutes; seek medical attention if irritation persists
- Ingestion: Generally low toxicity; rinse mouth and seek medical advice if large quantities ingested
Firefighting Measures
- Fire Hazards: Non-flammable
- Extinguishing Media: Use water spray, foam, dry chemical, or COâ‚‚ as appropriate for surrounding fire
- Special Precautions: None specific; thermal decomposition may release COâ‚‚
- Decomposition Products: Carbon dioxide upon thermal decomposition
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