Real Talcum Powder Product Service
Real Talcum Powder Product Service
Product Overview
Talcum powder originates from the mineral talc, a hydrated magnesium silicate, and is processed to achieve controlled particle size and purity for industrial use.
The milling and classification steps remove impurities such as quartz and carbonates, yielding a product with consistent chemical composition.
Typical industrial grades exhibit a whiteness above 80 % ISO brightness and a pH near neutrality when dispersed in water.
Technical Characteristics
Particle size distribution directly influences performance in applications such as filler reinforcement and lubrication, with D50 values typically ranging from 2 µm to 15 µm.
Moisture content is maintained below 0.05 % through controlled drying, preventing clumping and ensuring stable flow properties.
Chemical purity is verified by limiting trace metals (Pb, As, Cd) to less than 10 ppm each, meeting requirements for pharmaceutical and cosmetic grades.
| Parameter | Typical Value | Test Method |
|---|---|---|
| Particle Size D50 | 5 µm | Laser Diffraction |
| Moisture Content | <0.05 % | Loss on Drying |
| pH (10 % slurry) | 9.0‑9.5 | pH Meter |
| Whiteness (ISO Brightness) | 85 % | Reflectometer |
| Heavy Metals (Pb, As, Cd) | <10 ppm each | ICP‑OES |
Applications
In polymer compounding, talc acts as a reinforcing filler that improves stiffness and heat resistance while reducing material cost.
Such lamellar particles provide lubrication during processing, lowering torque and extending equipment life.
For pharmaceutical excipients, the high chemical inertness and controlled particle size enable uniform distribution in tablets and capsules.
Quality Control
Each batch undergoes laser diffraction analysis to confirm that the D10, D50, and D90 values fall within the agreed specification limits.
Loss on drying (LOD) is measured gravimetrically after heating to 105 °C, ensuring moisture remains below the target threshold.
Heavy metal screening uses inductively coupled plasma optical emission spectrometry (ICP‑OES) with detection limits well below 1 ppm for each element.
Customization Options
Size adjustment is possible through jet milling or air classification to achieve specific D50 targets ranging from 1 µm to 20 µm.
Surface treatments such as silane or stearate coatings improve compatibility with polar polymers and reduce hygroscopicity.
Packaging options range from multi‑wall paper bags (25 kg) to bulk flexible intermediate bulk containers (FIBCs) with inner liners for moisture protection.
Frequently Asked Questions
Yes, jet milling and classification allow tailoring of D10, D50, and D90 values to meet specific formulation requirements.
Typically, the buyer provides the desired particle size range, purity level, intended application, and estimated annual volume.
Depending on the contract, inspection includes laser diffraction, loss on drying, and ICP‑OES for heavy metals, with results provided in a certificate of analysis.
Contact Technical Sales
To discuss specific requirements or request a sample, please reach out to our technical sales team.
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