O le vaega autu o le talc o le hydrotalcite hydrous magnesium silicate ma le fua mole o le mg3 [si4o10] (OH) 2. Talc e a'afia i le monoclinic system.O le tioata e pseudohexagonal poʻo rhombic, i nisi taimi.E masani ona mafiafia, la'au, radial ma fibrous aggregates.E leai se lanu ma manino pe paʻepaʻe, ae o le lanumeamata lanumeamata, lanu samasama, lanu enaena poʻo le mumu mumu ona o sina mea leaga;o le mata cleavage o penina iila.Malosi 1, kalave fa'apitoa 2.7-2.8.

O le paʻu o le talc o loʻo i ai mea sili ona lelei faʻaletino ma vailaʻau e pei o le lubricity, teteʻe o le afi, teteʻe o le acid, insulation, maualuga le faʻafefeteina, le faʻaaogaina o vailaʻau, malosi ufiufi lelei, vaivai, luster lelei, adsorption malosi, ma isi mea aua o le fausaga tioata o le talc o loʻo faʻapipiʻiina, e i ai le uiga o le vaevaeina faigofie i fua ma lubricity faapitoa.Afai e maualuga tele le mea o loʻo i totonu o le Fe2O3, o le a faʻaitiitia lona faʻaogaina.

Fa'aaogāina ole talc:

(1) Cosmetics grade (Hz): faʻaaogaina mo ituaiga uma o paʻu susu, paʻu matagofie, paʻu paʻu, ma isi.

(2) Fua'ai mea'ai vaila'au (YS): vaila'au vaila'au, fa'apipi'i suka, pa'u vevela tui, talavai fa'aSaina, mea'ai fa'aopoopo, sui fa'amama, ma isi.

(3) Coating grade (TL): faʻaaogaina mo le paʻepaʻe tino paʻepaʻe ma ituaiga uma o vai-faʻavae, suauu-faʻavae, resini fale gaosi oloa, muamua, vali puipui, ma isi.

(4) Pepa togi (zz): faʻaaogaina e faʻatumu mo ituaiga uma o pepa ma pepa pepa, faʻapipiʻi faʻapipiʻi laupapa.

(5) Vasega palasitika (SL): faʻaaogaina e faʻatumu mo polypropylene, nylon, polyvinyl chloride, polyethylene, polystyrene, polyester ma isi palasitika.

(6) Rubber grade (AJ): fa'aogaina mo le fa'atumu o le pa'u ma le sui fa'apipi'i fa'aanti o oloa pa'u.