Whiting
Whiting is a finely ground, white, chalky substance primarily composed of calcium carbonate (CaCO₃). It is widely used as a pigment, filler, and extender in various industrial and commercial applications. Whiting provides opacity, brightness, and smoothness to products, enhancing their appearance and physical properties. Its natural abundance and versatility make it an economical additive in multiple manufacturing processes.
Whiting
Primary Uses
- Paints and Coatings Industry
- Pigment & Filler: Used to improve opacity, whiteness, and consistency in paints, coatings, and primers.
- Paper Industry
- Filler: Enhances brightness, opacity, and printability of paper and cardboard products.
- Rubber Industry
- Filler: Improves mechanical properties, reduces cost, and enhances processing of rubber compounds.
- Plastic Industry
- Extender & Filler: Increases volume and improves surface finish in plastic products such as PVC.
Secondary Uses
- Cosmetics
- Ingredient: Used in powders and creams to provide opacity and absorb moisture.
- Pharmaceuticals
- Excipient: Acts as an inert filler in tablets and powders.
- Agriculture
- Soil Amendment: Used to adjust soil pH and improve soil structure in farming applications.
- Construction
- Component: Used in plasters, sealants, and as a mild abrasive in cleaning compounds.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Calcium carbonate
- Common/Trade Name: Whiting, Chalk, Calcium Carbonate Powder
- CAS Number: 471-34-1
- HS Code: 2521.00.00
- Synonyms: Chalk, precipitated calcium carbonate (PCC), ground calcium carbonate (GCC)
2. Physical & Chemical Properties
- Physical State: Fine white powder
- Color & Odor: White, odorless
- Particle Size: Typically less than 10 microns (varies by grade)
- Solubility: Insoluble in water; soluble in dilute acids
- Density: Approx. 2.7 g/cm³
- pH: Neutral to slightly alkaline in aqueous suspension
3. Safety & Hazard Attributes
- GHS Classification: Not classified as hazardous
- Toxicity: Low toxicity; generally safe under normal handling
- Exposure Limits: Avoid inhalation of dust; follow workplace dust exposure limits
4. Storage & Handling Attributes
- Storage Conditions: Store in dry, well-ventilated areas away from moisture and contaminants
- Container Type: Bags, bulk bags, or bulk storage silos
- Shelf Life: Indefinite if kept dry and uncontaminated
- Handling Precautions: Minimize dust generation; use dust masks if needed
5. Regulatory & Compliance Attributes
- Complies with: Major industrial chemical regulations and REACH standards
- Manufactured under: Good manufacturing practices for industrial grade materials
- Suitable for: Industrial, cosmetic, and agricultural applications depending on grade
6. Environmental & Health Impact
- Biodegradability: Naturally occurring mineral; environmentally benign
- Ecotoxicity: Low risk to aquatic and terrestrial organisms
- Bioaccumulation: Not applicable
Safety Handling Precautions
- PPE Required: Dust mask and eye protection recommended when handling powders
- Handling Guidelines: Use adequate ventilation to control dust; avoid inhalation
- Storage Measures: Keep containers sealed to prevent moisture ingress
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if breathing difficulty occurs
- Skin Contact: Wash with water and soap if irritation develops
- Eye Contact: Rinse eyes thoroughly with water; seek medical advice if irritation persists
- Ingestion: Generally non-toxic; consult a physician if large quantities ingested
Firefighting Measures
- Fire Hazards: Non-flammable
- Extinguishing Media: Not applicable; use appropriate media for surrounding fire
- Hazardous Combustion Products: None from whiting itself
Related products
Aluminium Silicate
Aluminium silicate is an inorganic compound composed of aluminum, silicon, and oxygen, often found naturally as a major component of clay minerals such as kaolinite, halloysite, and other aluminosilicates. It is a white to off-white powder with excellent thermal stability, chemical inertness, and physical durability. Due to its wide range of physicochemical properties—including high melting point, non-toxicity, and adsorptive capabilities—aluminium silicate is extensively used across diverse industries including ceramics, paints, paper, rubber, plastics, cosmetics, and pharmaceuticals. Its unique structure imparts benefits such as heat resistance, improved mechanical strength, and anti-caking properties, making it a vital raw material in both industrial and consumer products.
Binder
A binder is a broad category of substances—organic or inorganic—used to hold different materials together in a cohesive mass. Common binders include natural polymers (starch, cellulose derivatives, proteins), synthetic resins (PVA, acrylics, phenolics), and inorganic binders (clays, cement, lime). They are essential in industries such as pharmaceuticals, construction, coatings, ceramics, adhesives, and printing, where they provide structural integrity, adhesion, and controlled release properties.
Calcium Carbonate Filler
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.
Calcium Carbonate Light
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.
Calcium Carbonate Uncoated
Calcium Carbonate Uncoated is a naturally occurring mineral compound composed primarily of calcium, carbon, and oxygen with the chemical formula CaCO₃. It appears as a fine white powder or granules, widely used as a filler, pigment, and functional additive across various industries. The uncoated form means the calcium carbonate particles are not surface-treated, retaining their natural properties. It is valued for its high brightness, whiteness, and excellent compressibility. Uncoated calcium carbonate is used to enhance opacity, improve processing, and reduce costs in plastics, paints, coatings, adhesives, rubber, paper, and construction materials.
Filler WTD
Filler WTD is a versatile, finely processed powdered filler primarily used in a wide range of industrial applications including paints, coatings, plastics, adhesives, sealants, rubber compounds, and construction materials. It is engineered to improve product performance by enhancing mechanical properties, increasing volume, reducing cost, and improving processing characteristics. Filler WTD typically exhibits excellent dispersibility, consistent particle size distribution, and good compatibility with various resin systems and binders. Its primary role is to act as an inert extender or reinforcing agent, providing bulk and stability while maintaining or enhancing the physical and chemical properties of the final formulation.
Kaolin
Kaolin is a naturally occurring, fine white clay mineral primarily composed of kaolinite. It features a soft, powdery texture and excellent absorbency. Kaolin is widely used across ceramics, paper, rubber, paint, and cosmetics industries due to its chemical inertness, whiteness, and plasticity. It acts as a filler, coating agent, and extender to enhance product quality and performance.
Talcum Powder (Talc)
Talcum Powder is a naturally occurring mineral composed primarily of hydrated magnesium silicate. It is known for its softness, absorbency, and lubricating properties. Talc is widely used in cosmetic, pharmaceutical, industrial, and consumer products due to its ability to absorb moisture, improve texture, and provide a smooth, silky feel. The powder form allows easy dispersion and application across diverse sectors.

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