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| DESCRIPTION |
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| Talc is a highly lamellar product. It is suitable for applications where very fine, pure and bright product is required. |
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| MINERALOGY |
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| Parameters |
Formula |
Method |
Unit |
Result |
| Lead |
Pb |
X - Ray Fluorescence |
% |
Traces |
| Chlorite |
Cl |
X - Ray Fluorescence |
% |
Traces |
| Arsenic |
Ar |
X - Ray Fluorescence |
% |
Traces |
| Chromium |
Cr |
X - Ray Fluorescence |
% |
Traces |
| Manganese |
Mg |
X - Ray Fluorescence |
% |
Traces |
| Nickel |
Ni |
X - Ray Fluorescence |
% |
Traces |
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| Detection of Asbestiform Minerals by DTFA J4 - 1 Method |
Parameters |
| Detection of Amphibole Minerals as Asbestos by XRD |
Negative |
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| AVERAGE ANALYSIS BY SGS MINLAB - 58602 / 2014 |
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| Chemical Analysis |
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| Parameters |
Formula |
Method |
Unit |
Result |
| Silica |
SiO2 |
Based on Scott ( Gravimetric ) |
% |
56.83 |
| Magnesium Oxide |
MgO |
Based on Scott ( Titrimetric ) |
% |
32.20 |
| Calcium Oxide |
CaO |
Based on Scott ( Titrimetric ) |
% |
00.97 |
| Calcium Carbonate |
CaCO3 |
Calculated |
% |
01.73 |
| Loss on Ignition ( L.O.I ) |
at 1050 °C |
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|
6 - 7 |
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| Physical Analysis |
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| Parameters |
Method |
Result |
| Density |
ISO 787/10 |
2.75 g/ml |
| Bulk Density |
ISO 787/11 |
0.70 g/ml |
| Hardness |
Mohs |
1 |
| Refractive Index |
|
1.75 |
| pH |
ISO 787/9 |
8 |
| Moisture |
ISO 782/2 |
< 1 % |
| Whiteness |
Ry |
93 - 95% |
| Whiteness |
L* |
97 - 98% |
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| PROPERTIES |
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The properties of Talc which make it of commercial value are:
- Extreme Softness
- Moderate Lustre
- Lubrication Properties
- Low Moisture Content
- Ability to absorb Oil and Grease
- Chemical Inertness
- High Fusion Point
- Low Conductivity for Heat and Electricity
- Good Hiding Power as a pigment
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| PSD SEDIGRAPH |
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| Sample |
Talc Powder CTAA40 |
R.I.Re. |
1.55 |
R.I.Im. |
0 |
| Medium |
Water |
Medium R.I. |
1.333 |
Obscuration |
44.29 % |
| Dispersant |
N/A |
Modal |
Unimodal |
Residua |
0.15 % |
| Remarks |
Aimsizer |
| Median (D50) |
13.94 um |
VMD(4,3) |
15.46 um |
SMD(3,2) |
8.91 um |
| SSA |
673.04 m2 / m3 |
Uniformity |
0.525 |
Span |
1.698 |
| D10 |
4.69 um |
D16 |
6.26 um |
D25 |
8.35 um |
| D75 |
20.97 um |
D84 |
24.7 um |
D90 |
28.38 um |
| D97 |
36.54 um |
D98 |
38.92 um |
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