Qaybta ugu weyn ee talc waa hydrotalcite hydrous magnesium silicate oo leh qaacidada molecular ee mg3 [si4o10] (OH) 2. Talc wuxuu ka tirsan yahay nidaamka monoclinic. Kilaasku waa mid isku-dhafan oo ah pseudohexagonal ama rhombic, mararka qaarkood. Badanaa waa isku-darka cufan ee cufan, caleemo, radial iyo fibrous. Waa mid aan midab lahayn oo hufan ama caddaan, laakiin waa cagaar khafiif ah, huruud khafiif ah, bunni khafiif ah ama xitaa casaan khafiif ah sababtoo ah xaddi yar oo wasakh ah; dusha sare ee kala-goysku waa dhalaal luul ah. Adkaanta 1, cuf-isjiidadka gaarka ah 2.7-2.8.

Budada Talc waxay leedahay sifooyin jireed iyo kiimiko oo aad u fiican sida saliidaynta, iska caabbinta dabka, iska caabbinta aashitada, dahaarka, barta dhalaalka sare, dhaqdhaqaaq la'aanta kiimikada, awoodda daboolista wanaagsan, jilicsanaanta, dhalaalka wanaagsan, nuugista xooggan, iwm. sababtoo ah qaab-dhismeedka kiristaalka ee talc waa la lakabay, waxay leedahay u janjeera inay si fudud u kala qaybiso miisaanno iyo saliid gaar ah. Haddii maaddada Fe2O3 ay aad u sarreyso, dahaarkeedu wuu yaraan doonaa.

Isticmaalka talc:

(1) Heerka qurxinta (Hz): waxaa loo isticmaalaa dhammaan noocyada budada qoyaanka, budada quruxda, budada talcum, iwm.

(2) Darajada cuntada daawada (YS): kiniin daawo, dahaarka sonkorta, budada kulaylka lagu shubo, warqadda daawada Shiinaha, cuntada lagu daro, wakiilka go'doominta, iwm.

(3) Heerka dahaarka (TL): waxaa loo isticmaalaa midabka jirka cad iyo dhammaan noocyada dahaarka warshadaha ee ku salaysan biyaha, saliidda, rinjiga ilaalinta, iwm.

(4) Heerka warqadda (zz): waxaa loo isticmaalaa buuxinta dhammaan noocyada warqadda iyo looxa warqadda, wakiilka xakamaynta laamiga alwaaxa.

(5) Heerka balaastikada (SL): waxaa loo isticmaalaa buuxinta polypropylene, nayloon, polyvinyl chloride, polyethylene, polystyrene, polyester iyo balaastikada kale.

(6) Heerka caagga (AJ): waxaa loo isticmaalaa buuxinta caagga iyo wakiilka ka hortagga dhegdheg ee alaabada caagga.