Talcum Powder Coating Grade 800mesh Fine for Paints
Product Definition & Composition
Talcum powder is a naturally derived, ultra-fine white powder composed primarily of hydrated magnesium silicate (Mg₃Si₄O₁₀(OH)₂). This lamellar crystalline mineral undergoes rigorous purification to achieve pharmaceutical-grade quality standards, featuring:
Purity: ≥98.5% talc content
Impurities: ≤1.5% (including trace carbonates and chlorites)
Absence of detectable asbestos fibers (<0.1% by XRD analysis)
Organoleptic Properties
Visual Characteristics: Snow-white, homogeneous powder
Tactile Properties: Characteristic greasy/slippery texture
Olfactory Profile: Completely odorless
Gustatory Profile: Neutral taste
Flow Characteristics: Excellent free-flowing properties
Manufacturing Process
Mineral Processing
Primary crushing (jaw crushers → 10-20mm granules)
Secondary milling (roller mills → 100-200μm)
Hydrochloric acid treatment (5% v/v, 60°C, 2h)
Triple-stage deionized water washing
Fluidized-bed drying (110°C, moisture <0.5%)
Quality Enhancement
Precision air classification (cut-point adjustment)
Steam sterilization (pharmaceutical grades)
Surface modification (for specialty applications)
Microbiological control (UV treatment)
Physicochemical Properties
Physical Parameters
Particle size distribution:
-
D10: 2-5μm
D50: 10-25μm
D90: 45-60μm
-
Specific surface area: 3-8 m²/g (BET)
Bulk density: 0.35-0.50 g/cm³
Refractive index: 1.54-1.59
Chemical Characteristics
pH (10% suspension): 8.5-10.2
Solubility profile:
-
Water: <0.1 mg/L
Dilute acids (0.1N HCl): 1-3%
Alkali solutions (1N NaOH): 2-5%
-
Loss on ignition: 4.5-6.0% (1000°C)
Grade Classification System
5.1 Pharmaceutical Grade
Sterility: <100 CFU/g
Heavy metals: <10ppm
Meets USP/EP/JP monographs
Primary uses: Tablet coating, powder formulations
Cosmetic Grade
Whiteness: ≥90% (CIE-L*)
Particle shape: Platy (aspect ratio >15:1)
Applications: Body powders, makeup bases
Food Grade
Complies with FCC VII standards
Microbial limits: Salmonella absent/25g
Uses: Rice polishing, anti-caking agent
Industrial Grades
Type | Feature | Application |
---|---|---|
Ceramic | High MgO content | Glaze formulations |
Paint | Low oil absorption | Extender pigment |
Plastic | Surface treated | PP/PE composites |
Paper | High brightness | Filler coating |
Functional Advantages
Performance Benefits
Exceptional lubricity (μ=0.05-0.08)
Thermal stability to 800°C
Chemical inertness in pH 3-11
UV light resistance
Low moisture absorption (<0.5%)
Technical Merits
Titanium dioxide extender (15-25% replacement)
Rheology modifier in suspensions
Anti-blocking agent in films
Nucleating agent in crystallizable polymers
Quality Assurance
ISO 9001:2015 certified production
Batch-wise certificate of analysis
Heavy metal screening (Pb, Cd, As, Hg)
Crystalline silica quantification (<1%)
Particle size distribution verification
Safety & Regulatory Compliance
REACH registered
OECD 402/404 safety tested
Non-GMO declaration
Kosher/Halal certification available
TSCA compliant
Packaging Specifications
Pharma grade: 25kg PE-lined paper bags
Food grade: 20kg multi-barrier bags
Industrial grades: 1MT bulk bags
Customized packaging solutions
Storage & Handling
Shelf life: 60 months in original packaging
Storage conditions: <30°C, <60% RH
Handling precautions: Use dust control measures
First-expired-first-out inventory system
Technical Support
Application development
Regulatory documentation
Troubleshooting
Custom particle engineering
Emerging Applications
Biodegradable composites
Cosmetic nanotechnology
Pharmaceutical DDS
Advanced ceramics
This technical specification presents talcum powder as a versatile, high-performance mineral offering unmatched functionality across diverse industries. Its unique combination of physical properties, chemical stability, and regulatory compliance makes it indispensable for demanding applications.
Item | Unit | Specification |
Whiteness | % | 90 ± 7 |
Si content | % | 30 ± 2 |
Mg content | % | 30 ± 5 |



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Company Name | Beijing TDD E-commerce Co., Ltd | Country/Region | China |
Business Type | Online Store | Company Size | 2000 |
Established | December 18, 2014 | ||
Address | Building No.3, Area 6, No.188, West of South Forth Ring Rd, Beijing, China | ||
Main Products | PVC Resin , PP , PE , Pet , Titanium Dioxide , Pigment , Car Tire | ||
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Beijing United Information Technology Co., Ltd. (Stock Code: 603613. SH), founded in 2002 and listed on the Main Board in July 2019, is mainly engaged in industrial e-commerce and industrial Internet platforms. Based on industrial e-commerce and supported by industrial big data and industrial digitalization, the company provides online commodity trading, business information services and digital technology services of industrial products and raw materials for related industries. In terms of business model, it is called "the industrial version of Pinduoduo" and "the industrial version of JD.com".
About Beijing TDD E-commerce Co., Ltd.
Beijing TDD E-commerce Co., Ltd. (shortly named TDD Global) is the core subsidiary of Guolian Corporation (Stock Code: 603613.SH) and the first industrial Internetplatform of Duoduo Series Platforms. The company mainly engages in B28 e-commerce transaction serices of raw material and industrial products, digital supply chain serices, industrial digitalization serices and industrial big data serices, and is committed to promoting the deep integration of traditional industries and new technologies such as the Internet, Internet of Things, big data, intelligent manufacturing and block chain, etc.
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