AGRICULTURAL GRADE

Calcium Carbonate Light

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Calcium Carbonate Light is a finely ground, low bulk density natural mineral composed primarily of calcium carbonate (CaCO₃). Compared to standard grades, it has a lower density and larger particle size distribution, making it suitable for applications where light weight and high brightness are important. This form is extensively used as a filler and extender in industries such as plastics, paints, rubber, paper, adhesives, and construction materials to improve opacity, brightness, and texture, while maintaining low weight and cost efficiency. Its chemical inertness and whiteness provide functional and aesthetic advantages across formulations.

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Categories: Admixtures, Fillers and Reinforcements, Soil Conditioners Tags: Calcium carbonate light, Construction materials, Paints and coatings additive, Paper industry, Plastics and polymer filler, Rubber compounding

Description

Table of Contents

Primary Uses

Plastics Industry
- Used as a lightweight filler in polypropylene, polyethylene, and other polymers to reduce weight without compromising mechanical properties.
- Improves surface finish and opacity in molded and extruded plastic products.
- Reduces production costs by partially replacing expensive polymers.
Paints and Coatings
- Functions as a pigment extender to enhance whiteness, brightness, and opacity in water-based and solvent-based paints.
- Controls rheology and improves film durability and resistance.
Rubber Industry
- Incorporated as a filler to improve softness, whiteness, and processability of rubber products.
- Enhances tensile strength and abrasion resistance in some compounds.
Paper Industry
- Used to increase brightness, opacity, and print quality in paper and paperboard products.
Construction Materials
- Acts as a lightweight filler in plasters, cement, and mortar, improving texture and reducing shrinkage.

Secondary Uses

Adhesives and Sealants
- Adds body and improves consistency in adhesive formulations.
Cosmetics
- Used as a pigment and absorbent in powders and creams (subject to purity and regulatory compliance).
Agriculture
- Sometimes used as a soil conditioner to modify pH and supply calcium.

PRODUCT KEY FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Calcium carbonate
Common/Trade Name: Calcium Carbonate Light
CAS Number: 471-34-1
HS Code: 2836.50.00
Molecular Formula: CaCO₃
Synonyms:
- Light calcium carbonate
- Low bulk density calcium carbonate
- Soft calcium carbonate

2. Physical & Chemical Properties

Physical State: Fine white powder
Color & Odor: White; odorless
Bulk Density: Lower than standard grades, approx. 0.5–0.8 g/cm³ (varies by supplier)
Particle Size: Larger and less dense than heavy grades; often micron-sized or larger particles
Specific Surface Area: Lower surface area compared to heavy grades
Density: True density approx. 2.7–2.8 g/cm³
Solubility: Insoluble in water; reacts with acids releasing CO₂ gas
pH: Slightly alkaline (pH ~9 in aqueous suspension)
Melting Point: Decomposes at ~825°C with CO₂ release
Stability: Chemically inert and stable under standard conditions

3. Safety & Hazard Attributes

Hazard Class (GHS): Not hazardous; nuisance dust
NFPA Ratings:
- Health: 1
- Flammability: 0
- Reactivity: 0
Exposure Limits: OSHA PEL: 15 mg/m³ total dust
Toxicity: Low acute toxicity; inhalation of dust can cause mild respiratory irritation
Reactivity: Stable; reacts with acids releasing carbon dioxide

4. Storage & Handling Attributes

Storage Conditions: Store in a dry, cool, well-ventilated area
Container Type: Supplied in bags or bulk containers with dust control
Shelf Life: Indefinite when stored properly
Special Handling: Use dust control measures and PPE to prevent inhalation

5. Regulatory & Compliance Attributes

FDA Status: Depending on purity, may be suitable for indirect food contact and pharmaceutical use (verify regulatory status)
Transportation: Not regulated as hazardous material
Waste Disposal: Dispose as non-hazardous industrial waste per local laws

6. Environmental & Health Impact

Ecotoxicity: Minimal environmental risk; naturally occurring mineral
Persistence: Persistent in the environment; chemically inert
Bioaccumulation: Not expected to bioaccumulate
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 dust generation and inhalation
Use local exhaust ventilation
Handle in well-ventilated areas

Storage Measures:

Keep containers sealed and dry
Protect from moisture and acids

Hygiene Practices:

Wash hands thoroughly after handling
Avoid eating, drinking, or smoking during use

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if respiratory symptoms develop
Skin Contact: Wash skin with soap and water; seek medical help if irritation occurs
Eye Contact: Rinse eyes with plenty of water for 15 minutes; get medical advice if irritation persists
Ingestion: Low toxicity; rinse mouth and seek medical help if large quantities ingested

Firefighting Measures

Fire Hazards: Non-flammable
Extinguishing Media: Water spray, foam, dry chemical, or CO₂ as appropriate
Special Precautions: None specific
Decomposition Products: Carbon dioxide released under extreme heat