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
