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.
Filler WTD
Primary Uses
- Paints and Coatings
- Serves as an extender pigment to increase volume and reduce formulation costs without compromising coating quality.
- Enhances opacity, brightness, and surface smoothness of paints and varnishes.
- Improves mechanical properties such as scratch resistance, durability, and weathering performance.
- Aids in controlling viscosity and rheology for better application and flow.
- Plastics and Polymers
- Used as a reinforcing filler in thermoplastics and thermosets to improve stiffness, dimensional stability, and impact resistance.
- Helps reduce shrinkage and warpage during molding processes.
- Contributes to improved processing efficiency by modifying melt flow and extrusion characteristics.
- Acts as a cost-effective volume extender to reduce raw material expenses.
- Adhesives and Sealants
- Enhances the mechanical strength and durability of adhesive bonds and sealant compounds.
- Controls shrinkage and curing characteristics.
- Improves workability and consistency of formulations.
- Rubber Compounds
- Used as a reinforcing or processing filler in natural and synthetic rubber products to improve tensile strength, abrasion resistance, and elasticity.
- Assists in controlling hardness and resilience of rubber goods.
- Construction Materials
- Incorporated into cement, mortar, plaster, and putty formulations to improve bulk, reduce cracking, and enhance workability.
- Improves texture and finish quality of architectural coatings and plasters.
Secondary Uses
- Paper Industry
- Utilized as a filler to improve paper opacity, brightness, and printability.
- Enhances surface smoothness and ink receptivity.
- Ceramics and Glass
- Acts as a functional filler in ceramic bodies to improve firing behavior and mechanical properties.
- Used in glass formulations to modify melting points and optical properties.
- Cosmetics
- Occasionally employed in personal care formulations (e.g., powders) as a texturizing and bulking agent, though this is less common depending on composition.
1. Basic Identification Attributes
- Chemical Name: Variable depending on composition (commonly calcium carbonate, talc, silica, or other mineral fillers)
- Common/Trade Name: Filler WTD
- CAS Number: Depends on primary mineral content (e.g., calcium carbonate CAS 471-34-1)
- HS Code: Varies depending on material but generally under 2508, 2529, or related chapters
- Molecular Formula: Variable depending on specific filler chemistry
2. Physical & Chemical Properties
- Physical State: Fine powder
- Color: Off-white to white, depending on formulation
- Odor: Odorless
- Particle Size: Typically micron-sized, uniform distribution for optimal dispersibility
- Density: Varies (usually 2.5–2.8 g/cm³ for mineral fillers)
- Solubility: Insoluble in water and organic solvents
- pH: Neutral to slightly alkaline depending on composition
- Stability: Chemically inert and stable under normal processing and storage conditions
3. Safety & Hazard Attributes
- Hazard Class (GHS): Generally classified as non-hazardous inert material; dust may cause respiratory irritation
- Toxicity: Low toxicity; prolonged inhalation of dust may cause respiratory discomfort
- Exposure Limits: Follow local occupational exposure limits for nuisance dust (typically OSHA PEL = 15 mg/m³ total dust, 5 mg/m³ respirable dust)
4. Storage & Handling Attributes
- Storage Conditions: Store in dry, cool, and well-ventilated areas; avoid moisture to prevent caking
- Container Type: Bags or bulk containers designed to minimize moisture ingress
- Shelf Life: Indefinite if stored properly in sealed, dry conditions
- Handling Precautions: Use dust control measures; wear PPE during handling to avoid dust inhalation
5. Regulatory & Compliance Attributes
- Complies with relevant industry standards for fillers in paints, plastics, and construction materials
- Registered and approved for use in applicable industries according to regional regulatory frameworks
6. Environmental & Health Impact
- Biodegradability: Inert mineral fillers do not biodegrade but are environmentally stable
- Ecotoxicity: Generally low environmental impact; avoid uncontrolled release into waterways
- Bioaccumulation: Not applicable
- Carcinogenicity/Mutagenicity: Not carcinogenic; inert mineral nature
Safety Handling Precautions
- PPE Required: Dust mask or respirator, safety goggles, gloves
- Handling Guidelines: Minimize dust generation; use local exhaust ventilation where possible
- Storage Measures: Keep containers sealed and dry
- Hygiene Practices: Wash hands after handling; avoid eating/drinking in handling areas
First Aid Measures
- Inhalation: Move to fresh air; seek medical advice if respiratory irritation occurs
- Skin Contact: Wash with soap and water; seek medical attention if irritation develops
- Eye Contact: Rinse thoroughly with water for at least 15 minutes; consult a physician if irritation persists
- Ingestion: Rinse mouth; seek medical advice if large quantities swallowed
Firefighting Measures
- Fire Hazards: Non-flammable
- Extinguishing Media: Use appropriate media for surrounding fire
- Special Precautions: None specific to Filler WTD; avoid dust cloud ignition
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.
Aluminum Fine Powder
Aluminum fine powder consists of finely divided aluminum particles, typically metallic and silvery-white in appearance. It is produced by atomization or grinding of bulk aluminum and is valued for its high surface area, excellent conductivity, and lightweight metallic properties. Aluminum fine powder is extensively used in various industrial applications including metallurgy, pyrotechnics, coatings, additive manufacturing, and as a pigment. Due to its reactivity, it requires careful handling and storage. Its fine particulate nature makes it particularly useful where rapid oxidation or reaction is desired, such as in explosives or energetic materials. It is also employed in the manufacturing of paints, inks, and cosmetics to impart metallic luster.
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 Heavy
Calcium Carbonate Heavy is a high-density, finely ground, natural mineral primarily composed of calcium carbonate (CaCO₃). Known for its higher bulk density compared to regular grades, this filler is widely used in applications requiring enhanced weight, opacity, and strength. It is commonly employed as a functional filler and extender in industries such as plastics, paints, coatings, adhesives, rubber, paper, and construction materials. Its inert nature, whiteness, and particle size distribution make it suitable for improving mechanical properties and surface finish, while also offering cost efficiency by replacing more expensive raw materials.
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 Sulphate
Calcium Sulphate is an inorganic compound composed of calcium, sulfur, and oxygen, commonly found in two forms: dihydrate (gypsum, CaSO4·2H2O) and anhydrous (CaSO4). It appears as a white or off-white crystalline powder or granules with low solubility in water. Calcium Sulphate is widely used in construction, agriculture, pharmaceuticals, food industry, and various industrial applications. It acts as a filler, hardening agent, and drying agent due to its physical and chemical properties. The dihydrate form (gypsum) is notable for use in plaster and cement, while the anhydrous form is often used as a drying agent and in refractory materials.
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.
Polywhite B
Polywhite B Chinaclay, commonly known as Chinaclay, is a naturally occurring, fine white clay mineral primarily composed of kaolinite. It is highly valued for its purity, whiteness, and fine particle size, making it suitable for a variety of industrial applications. Polywhite B improves texture, opacity, and durability in products and is widely used in ceramics, paper, paints, and rubber industries.

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