Soap stone powder
Confirmation of an authorized laboratory
Test report
No:
Date:05.04.2006
Product name: soap stone powder (talc)
Chemical name: hydrated magnesium silicategrade:90% brightness
Batch no.Formula:3mgo4sio2.H2o
Int'l standard name/date/page:
Description of teststandardresult of test
Silica (sio2) 59.9% chemical analysis
Magnesium oxide (mgo) 31.77%
Iron and aluminum oxide (r2o3) 0.31%
Iron (fe2o3) 0.49%
Calcium oxide (cao) 0.42%
Sodium oxide (na2o) 0.02%
Aluminum oxide (al2o3) 0.22%
Potassium oxide (k2o) 0.01%
Phosphate -
Heavy metals -
Lead (pb) -
Arsenic (as) -
Carbonate none
Zinc oxide -
Boric acid none
Lossing on ignition (l.O.I.) 5.57%
Microbial contamination -
* aerobic bacteria -
* fungi -
Whiteness / brightness (% min.) 90% physical analysis
Density 0.54%
Ph of 10% solution 8.4
Moisture at centigrad degree (max. %) 0.10%
Boiling water insoluble matter (min. %) -
Acid soluble substances (%) 5%
Water soluble substances (max%) -
Acid and alkali soluble substances (%) 0.5%
Water soluble iron substances (%) -
Oil absorption 31.5%
Sizemesh passing (through % min.)
Residue in 75microns sieve (max. %) 0.04%
Residue in 150microns sieve (max. %) 0.01%
25 kg, 50kg, 500kg
