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
Aerosil 200
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.
Aluminum hydroxide
Aluminum Hydroxide, chemically known as Al(OH)₃, is a white, odorless, and odorless powder or gelatinous substance. It is widely used in pharmaceuticals as an antacid to neutralize stomach acid and relieve indigestion and heartburn. Beyond healthcare, aluminum hydroxide is a crucial component in water purification, fire retardants, and as a precursor or filler in various industrial applications. It functions as a flame retardant by releasing water upon heating, thus cooling the material and diluting flammable gases. Due to its amphoteric nature, it can react both as an acid and base, enhancing its versatility. Aluminum hydroxide is often utilized in manufacturing aluminum salts and in producing aluminum oxide.
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.
Calcined Kaolin
Calcined Kaolin is a fine, white to off-white powder produced by heating natural kaolin clay to high temperatures (typically between 600°C and 900°C) in a controlled process called calcination. This thermal treatment removes chemically bound water, changes the crystalline structure, and enhances the physical and chemical properties of kaolin. The resulting product exhibits increased brightness, hardness, and opacity, making it highly valuable as a functional additive and filler in numerous industrial applications. Calcined Kaolin is widely used in coatings, ceramics, plastics, rubber, paper, and paint industries to improve durability, brightness, and performance.
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.
Master Fibre
Master Fibre is a high-quality synthetic fiber additive designed to reinforce concrete and mortar mixtures. It improves structural integrity by enhancing tensile strength, reducing cracking, and increasing durability. The fibers disperse uniformly within the mix, providing better load distribution and impact resistance in industrial, commercial, and residential construction applications. Master Fibre enhances performance without compromising workability, making it ideal for use in concrete slabs, pavements, beams, and repair mortars.
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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