Qaybta ugu muhiimsan ee talc waa hydrotalcite hydrous magnesium silicate oo leh caanaha molecular ee mg3 [si4o10] (OH) 2. Talc waxay ka tirsan tahay nidaamka monoclinic.Karistanku waa pseudohexagonal ama rhombic, marmar.Caadi ahaan waa cufan cufan, caleen leh, radial iyo wadar ahaan.Waa mid aan midab lahayn oo hufan ama caddaan ah, laakiin waa cagaar khafiif ah, huruud khafiif ah, bunni khafiif ah ama xitaa casaan khafiif ah sababtoo ah qadar yar oo wasakh ah;dusha jeexan waa luul dhalaalaya.Adag 1, culeys gaar ah 2.7-2.8.

Budada Talc waxay leedahay sifooyin jidheed iyo kiimiko oo heer sare ah sida saliidda, iska caabinta dabka, caabbinta aashitada, dahaarka, barta dhalaalka sare, firfircoonida kiimikada, awoodda daboolka wanaagsan, jilicsanaanta, dhalaalka wanaagsan, adsorption xooggan, iwm. sababtoo ah qaabka crystal ee talc waa lakabka waxay leedahay u janjeera in si fudud loo kala qaybiyo miisaan iyo saliid gaar ah.Haddii waxa ku jira Fe2O3 uu aad u sarreeyo, dahaarkiisa waa la dhimi doonaa.

Isticmaalka talc:

(1) Darajada isku qurxiyo (Hz): loo isticmaalo dhammaan noocyada kala duwan ee budada qoyaanka, budada quruxda, budada talcum, iwm.

(2) Darajada cuntada daawada (YS): kiniiniga dawada, dahaarka sonkorta, budada kulaylka leh, qorida daawada Shiinaha, cuntada lagu daro, wakiilka go'doominta, iwm.

(3) Darajada dahaarka (TL): loo isticmaalo midabka jidhka cad iyo dhammaan noocyada biyaha ku salaysan, saliid ku salaysan, daahan warshadaynta resin, primer, rinjiga ilaalinta, iwm.

(4) Fasalka warqadda (zz): loo isticmaalo buuxinta dhammaan noocyada waraaqaha iyo sabuuradaha, wakiilka kontoroolka daamurka alwaax.

(5) Darajada caaga ah (SL): waxaa loo isticmaalaa sidii buuxinta polypropylene, naylon, polyvinyl chloride, polyetylen, polystyrene, polyester iyo balaastikada kale.

(6) Darajada caagga ah (AJ): waxaa loo isticmaalaa buuxinta caagga iyo wakiilka ka hortagga adhesion ee alaabta caagga ah.