Polywhite B

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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.

Description

Polywhite B (Chinaclay)

Primary Uses 

  1. Ceramics Industry
    • Used as a key raw material in porcelain and fine china production.
    • Enhances whiteness, strength, and plasticity of ceramic products.
      Improves thermal stability and firing characteristics.
  2. Paper Industry
    • Acts as a coating and filler to improve paper brightness, smoothness, and printability.
    • Enhances opacity and reduces ink absorbency.
  3. Paints and Coatings
    • Used as an extender and pigment in paints to improve whiteness and consistency.
    • Increases durability and resistance to abrasion.
  4. Rubber Industry
    • Functions as a reinforcing filler to improve tensile strength and wear resistance.
    • Enhances processing characteristics and reduces production costs.

Secondary Uses 

  1. Cosmetics
    • Used as an absorbent and texturizer in powders and facial masks.
    • Provides a smooth, matte finish.
  2. Plastic and Polymer Industry
    • Used as a filler to improve mechanical properties and reduce material costs.
  3. Agriculture
    • Employed as a carrier for pesticides and fertilizers due to its inert nature.
  4. Adhesives and Sealants
    • Improves viscosity and texture.
KEY PRODUCT FEATURES

1. Basic Identification Attributes

  • Chemical Name (IUPAC): Kaolinite (Al2Si2O5(OH)4)
  • Common/Trade Name: Polywhite B, Chinaclay
  • CAS Number: 1332-58-7
  • HS Code: 2507.00.00 (Kaolin and other kaolinic clays)
  • Synonyms: China clay, Kaolin

2. Physical & Chemical Properties

  • Physical State: Fine powder
  • Color: Bright white
  • Odor: Odorless
  • Particle Size: Generally less than 2 microns
  • Specific Gravity: 2.6–2.65
  • Chemical Composition: Primarily Al₂O₃·2SiO₂·2H₂O (kaolinite)
  • pH: 4.5–6 (in aqueous suspension)
  • Moisture Content: Typically <1%

3. Safety & Hazard Attributes

  • GHS Classification: Not classified as hazardous
  • Toxicity: Non-toxic; inert material
  • Dust Hazard: May cause respiratory irritation if inhaled in high concentrations
  • Carcinogenicity: Not classified as carcinogenic

4. Storage & Handling Attributes

  • Storage Conditions: Store in a dry, cool place away from moisture
  • Container Type: Supplied in bags or bulk containers
  • Shelf Life: Indefinite if stored properly
  • Handling Precautions: Use dust control measures; wear masks in dusty environments

5. Regulatory & Compliance Attributes

  • Complies with applicable industrial standards for kaolin clay
  • Approved for use in cosmetics and food contact applications (subject to purity)

6. Environmental & Health Impact

  • Biodegradability: Naturally occurring mineral, inert and non-biodegradable
  • Ecotoxicity: Low environmental impact
  • Bioaccumulation: Not applicable
  • Carcinogenicity/Mutagenicity: Not hazardous
SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

  • PPE Required: Dust mask, gloves, and eye protection when handling powder
  • Handling Guidelines: Avoid inhalation of dust; use ventilation and dust extraction
  • Storage Measures: Keep containers sealed and dry

First Aid Measures

  • Inhalation: Move to fresh air; seek medical attention if respiratory irritation occurs
  • Skin Contact: Wash with soap and water; no adverse effects expected
  • Eye Contact: Rinse thoroughly with water; seek medical attention if irritation persists
  • Ingestion: Not toxic; rinse mouth if ingested accidentally

Firefighting Measures

  • Fire Hazards: Non-flammable
  • Extinguishing Media: Use standard firefighting procedures for surrounding materials
  • Special Precautions: None specific to material
  • Hazardous Combustion Products: None