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TALMAG-GM-20  
 
High chemical purity natural mineral powder, white, odorless, Lamellar and tasteless. Without chemicals, insoluble and inert.

PRODUCT DESCRIPTION
The structural formula of the mineral pure talc is Mg3(Si2O5)2(OH)2 or 3MgO.4SiO2.H2O, corresponding to the theoretical chemical 
Composition of MgO =31.7%, SiO2 = 63.5% e H2O = 4.8%.

MAIN APPLICATIONS Industrial Talc for use in plastics.

 

CHEMICAL PROPERTIES (%)
SiO2 MgO Al2O3 Fe2O3 CaO MnO TiO2
58.0 30.0 1.3 0.3 0.05 0.03 0.03
≥ 56.0 ≥ 29.0 ≤ 1.5 ≤ 0.5 ≤ 0.1 ≤ 0.05 ≤ 0.05

 

PHYSICAL PROPERTIES
  Specification Unit
Whiteness FMY, Elrepho 200, standard 100% = MgO P.A. ≥ 92.0 (%)
Loose density 0.18 / 0.20 (g/cm³)
Tapped density 0.65 / 0.75 (g/cm³)
Humidity ≤ 0.5 (%)
Loss on ignition 1000° C x 1h 4.75 / 8.00 (%)
Surface area BET ≥ 5.0 (m2/g)
pH (Europe Pharmacopeia) ≤ 9.0  
Absorption linseed oil 50.0 / 70.0 (g/100g)
Heavy metals ≤ 40.0 (ppm)
Lead ≤ 10.0 (ppm)
Sedigraph D98 ≤ 20.0 (Xm)
Sedigraph D75 ≤ 7.5 (Xm)
Sedigraph D50 ≤ 5.0 (Xm)
Sedigraph D25 ≤ 3.0 (Xm)
Sedigraph D10 ≤ 1.8 (Xm)


 SPECIFIC PROPERTIES

 

  Description
Refraction index 1.588
Quantitative mineralogical analyzes DRX Talc, Quartz, Magnesite, Chlorite
Asbestos Absent
Arsenic Absent
Fe soluble in H2O Absent

NOTE
1. The tests are conducted in accordance with ABNT, ASTM, EN, DIN standards and internal procedures.
2. For additional information concerning security it is recommended to consult the Material Safety Data Sheet – MSDS.
3. Chemical analysis was conducted according to Magnesita’s internal procedure using calcined basis.
4. Chemical analysis and special tests are according to ISO 9001.
5. Technical data were obtained from laboratory tests on samples of this brand taken from production.
6. Typical values were statistically calculated according to the brand database.
7. The information on this sheet may change without previous communication. Once the sales order is confirmed it is recommended to check if this information sheet needs updates.
8. Whiteness test, Loss on ignition, Loose density and Humidity are performed on all the lots. The others are guarantees and frequency of analysis is annual.
9. Shelf life of 60 months if they kept the original characteristics of packaging and stored in a clean and free humidity. The exposure to humidity can cause metalling.

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