Talcum Powder Paper-Making Grade 1250mesh Super Fine for Paper Coating

Product Overview
Our high-purity talcum powder is a naturally occurring hydrous magnesium silicate mineral processed to meet exacting industrial standards. This ultra-fine white powder exhibits a characteristically smooth texture with excellent lubricity, completely free from grittiness or sand content. The product is odorless and tasteless, making it suitable for sensitive applications across multiple industries.

Chemical Composition & Properties

• Primary constituent: Hydrated magnesium silicate [Mg₃Si₄O₁₀(OH)₂]

• Typical composition:

  • Magnesium oxide (MgO): 31.5-32.5%

  • Silicon dioxide (SiO₂): 61.5-62.5%

  • Bound water: 4.5-5.5%

• pH value: 8.0-9.5 (10% aqueous suspension)

• Solubility: Insoluble in water; partially soluble in dilute mineral acids/alkalis

Manufacturing Process

1. Ore Selection: Premium talc ore hand-selected from certified deposits

2. Mechanical Processing:

   • Primary jaw crushing to <50mm

   • Secondary roller milling to <5mm

3. Chemical Purification:

   • Hydrochloric acid treatment (6±1% concentration)

   • Counter-current washing system

   • Neutralization to pH 7.0-7.5

4. Final Processing:

   • Jet milling to target particle sizes

   • Air classification for precise size distribution

   • Quality control certification

Physical Characteristics

• Appearance: Snow-white free-flowing powder

• Particle Morphology: Platy structure with 15:1 aspect ratio

• Particle Size:

  • D10: 2-3μm

  • D50: 6-8μm

  • D90: 15-18μm

• Specific Gravity: 2.78±0.02 g/cm³

• Bulk Density: 0.45-0.55 g/cm³ (loose)

• Moisture Content: ≤0.3% (105°C, 2hrs)

• Whiteness Index: ≥93% (ISO brightness)

Industrial Grades & Applications

Pharmaceutical Grade

• Compliance: USP/EP/JP/ChP

• Key specs:

  • Asbestos-free certification

  • Heavy metals: <10ppm (Pb), <5ppm (As)

  • Microbial limits: TAMC<100 CFU/g

• Applications: Tablet coating, powder bases, surgical lubricants

Food Grade (E553b)

• Certifications: FDA 21CFR182.90, EU E553b

• Purity specs:

  • Acid-soluble matter: ≤0.1%

  • Loss on ignition: ≤5.5%

  • Arsenic content: ≤3ppm

• Uses: Anti-caking agent, rice polishing, chewing gum base

Cosmetic Grade

• Standards: INCI, EU Cosmetic Regulation

• Performance specs:

  • Oil absorption: 40±5g/100g

  • Skin compatibility: Non-irritating

  • Whiteness: L*≥96 (CIE LAB)

• Applications: Body powders, makeup, skincare

Ceramic Grade

• Technical parameters:

  • Fe₂O₃ content: ≤0.8%

  • Fired shrinkage: ≤2.5% (1300°C)

  • Thermal stability: Up to 1100°C

• Uses: Sanitaryware, tiles, technical ceramics

Industrial Chemical Grade

• Key properties:

  • Surface area: 8-12 m²/g (BET)

  • Hardness (Mohs): 1

  • Dielectric constant: 5.5-6.5

• Applications: Plastics, paints, rubber, adhesives

Quality Assurance

• Full traceability from mine to final product

• Batch certification with:

  • XRD mineralogical analysis

  • ICP-OES elemental analysis

  • Laser diffraction particle sizing

  • Microbial testing (for hygiene grades)

• ISO 9001:2015 certified production

• GMP compliance for pharmaceutical grade

Packaging & Storage

• Standard packaging:

  • 25kg multi-ply paper bags (PE lined)

  • 500kg FIBC super sacks (with liners)

• Custom packaging available

• Storage requirements:

  • Temperature: 10-30°C

  • Humidity: <60% RH

  • Shelf life: 36 months

Safety & Handling

• GHS classification: Not classified

• Recommended PPE:

  • Dust mask (N95) for powder handling

  • Safety goggles

  • Protective gloves

• First aid measures:

  • Eye contact: Flush with water

  • Inhalation: Move to fresh air

  • Skin contact: Wash with soap

Technical Support Services

• Application development

• Formulation assistance

• Processing optimization

• Regulatory documentation

• Custom particle engineering

Ordering Information

• MOQ: 500kg

• Sample availability: 2kg technical samples

• Lead time: 2-4 weeks for standard grades

• Global logistics support

This comprehensive technical specification details our premium talcum powder products. For application-specific recommendations or custom requirements, please contact our technical team for expert consultation. Our R&D department can develop tailored solutions to meet your exact formulation needs.

Item	Unit	Specification
Whiteness	%	90±7
Si content	%	30±2
Mg content	%	30±5

TDD-Global.com is a professional China chemical B2B marketplace operated by IBI Company, dedicated to promoting global communication, business negotiation, and market expansion in the chemical industry. With a strong network of China chemical product suppliers and international buyers, TDD-Global creates a dynamic and efficient platform for sourcing, trading, and cooperation.

 

Under the brand name TUDUODUO, TDD-Global has built a trusted reputation among suppliers and buyers in sectors such as fine chemicals, raw materials, industrial additives, and advanced chemical solutions. We offer a wide range of services including product listing, online promotion, supply chain solutions, and international marketing support.

 

Our platform connects hundreds of verified China chemical suppliers with buyers worldwide, fostering transparent transactions, better business opportunities, and high-value partnerships. Whether you are looking for bulk commodities, specialty chemicals, or customized procurement services, TDD-Global is your go-to platform.

 

Driven by the innovative spirit of IBI Company, we are committed to building a smarter, faster, and more reliable global chemical trade ecosystem.

 

If you are interested in cooperation, strategic partnerships, or customized chemical sourcing, please feel free to contact us. Let's shape the future of the chemical industry together!