Talc
Name synonyms:magnesium silicate hydrate
Product name:talc, magnesium silicate hydroxide
GOST 21235-74
Chemical formula (3MgO+ 4SiO2)H2O
Specification:
Name of indicators TU norm
TKM — 27 TU norm
TMK — 28
1. Appearance white powder white powder
2. Mass fraction of magnesium oxide (MgO), %, not less than 28 27
3. Mass fraction of iron oxide (Fe2O3) in hydrochloric acid (HCl)
residue, %, not more than 5 6
4. Mass fraction of iron extracted by magnet, %, not more 0,5 0,8
5. The mass loss during annealing (t=1000º), %, not more than 8 9
6. Mass fraction of moisture, %, not more than 1 1
7. The residue on the mesh 014, %, not more 2 2
Application:
• for the production of ceramic products
• in the production of electrodes
• in foundry.
• in mechanical engineering
Packing: multilayer paper bags, big bags
Storage: in open areas under cover and in closed areas, avoiding moisture
Hazard class: 4 class