superwhite industrial talc powder papermaking talc made in china
Talcpowderisahouseholditem,soldgloballyforuseinpersonalhygieneandcosmetics.Somesuspicions
havebeenraisedaboutthepossibilitythatitsusecontributestocertaintypesofdiseases,mainlycancersof
theovariesandlungsalthoughtherelationshipisstilllargelyahypothesisandnotscientificallyproven.TheOccupationalSafetyandHealthAdministrationandNationalInstituteforOccupationalSafetyandHealth
havesetoccupationalexposurelimitstorespirabletalcdustsat2mg/m3overaneight-hourworkday.
Oneparticularissuewithcommercialuseoftalcisitsfrequentco-locationinundergrounddepositswith
asbestosore,whichoftenleadstocontaminationofpowderedtalcproductswithasbestosfibers.Stringent
qualitycontrolsince1976hasmostlyeliminatedthisissue,butitremainsacontinuinghazardrequiring
mitigationintheminingandprocessingoftalc.A2010USFDAsurveyfailedtofindasbestosinavarietyof
talc-containingproducts.TheUSFoodandDrugAdministration(FDA)considerstalc(magnesiumsilicate)tobegenerally
recognizedassafe(GRAS)foruseasananti-cakingagentintablesaltinconcentrationssmallerthan2%PAINTGRADETALCPOWDER
TechnicalspecificationPaint
60-10Paint
60-20Paint
60-38Paint
58-15Paint
57-63Paint
35-45PTS
6-30PTS
8-10PTS
8-63PTS
8-38SiO2%≥60606058573535353535MgO%≥31313130303128282828CaO%≤0.450.450.450.800.802.002.002.002.002.00Fe2O3%≤0.300.300.300.300.300.300.300.300.300.30Al2O3%≤0.200.200.200.500.500.506-88-108-108-10L.O.I.%≤7.007.007.008.009.0025.0014.0014.0014.0040.00Oil-absorbedg/100g50-5530-3828-3540-5020-2520-2520-2540-50≥50≤25D9810µm22µm38µm15µm63µm45µm30µm10µm63µm38µm
NOTE:Atpresent,wecansupplythefollowingtalcpowderwhichisspecialforpaintindustrytochoose:PaintindustryTalcpowdermeshWhitenessRemarkLatexpaint325~800mesh≥92.0Polyesterpaint1250mesh≥94.0HightransparenceVarnish325-600mesh≥92.0-95.0HightransparenceAutoputty325-800mesh≥94.0Streetindicatingpaint325-600mesh≥90.0Shippingpaint325-800mesh≥92.0-95.0Buildingpaint325-600mesh≥90.0Industrypaint325-500esh≥90.0Antisepsispaint325-800mesh≥92.0-95.0Pigmentpaint200-600mesh≥90.0
Note:Soapstonepowder325-800mesh,whiteness90-94,overcastrateisbetter