Umthofu uyikhemikhali, uphawu lwawo lwamakhemikhali yi-Pb(Latin Plumbum; lead, enenombolo ye-athomu engu-82, iyisici esikhulu kunazo zonke esingasebenzisi imisebe ngesisindo se-athomu.
Umthofu uyinsimbi ethambile futhi ethambile ebuthakathaka, inobuthi, nensimbi esindayo.Umbala wokuqala womthofu unombala oluhlaza okwesibhakabhaka nomhlophe, kodwa emoyeni indawo engaphezulu imbozwa i-oxide empunga efiphele.Ingasetshenziswa ekwakheni, amabhethri e-lead-acid, ama-warheads, amagobolondo ezikhali, izinto zokushisela, izikhali zokudoba, izikhali zokudoba, izinto zokuvikela imisebe, ama-trophies namanye ama-alloys, njengama-alloys e-lead-tin for electronic welding.Umthofu uyingxenye yensimbi engasetshenziswa njengezinto ezimelana nokugqwala kwe-sulfuric acid, imisebe ye-ionizing, amabhethri nokunye.Ingxubevange yayo ingasetshenziselwa uhlobo, ukuthwala, ikhava yekhebula, njll., futhi ingasetshenziselwa ukudubula kwemishini yezemidlalo.
Okulandelayo ulwazi oluyisisekelo lokuhola lwereferensi yakho:
| Igama lesiShayina | Qian | Iphuzu elibilayo | 1749°C |
| Igama lesiNgisi | Ukuhola | Ukuncibilika kwamanzi | Ayincibiliki emanzini |
| Elinye igama | Isixhumanisi, iketango, isifazane, inqola yomfula, ithini elimnyama, igolide, igolide le-lapis, igolide emanzini | ukuminyana | 11.3437 g/cm³ |
| Ifomula yamakhemikhali | Pb | ukubukeka | Okumhlophe okusiliva okunombala oluhlaza okwesibhakabhaka |
| Isisindo samangqamuzana | 207.2 | Incazelo yobungozi | enobuthi |
| Inombolo yokungena ye-CAS | 7439-92-1 | Amandla Okushisa athize | 0.13 kJ/(kg·K) |
| Iphuzu lokuhlanganisa | 327.502°C | ubulukhuni | 1.5 |
Qaphela: Umthofu ngokwawo unobuthi, kodwa awunabo ubuthi uma ucutshungulwa eshidini lomthofu, umnyango womthofu, izinhlayiya zomthofu kanye nentambo yomthofu.
Ngo-Agasti 31, 2023, ngokushintsha kwemvelo, intengo yomthofu iyaqhubeka nokukhuphuka, futhi okulandelayo isithombe-skrini senethiwekhi ye-Metal non-ferrous Metal yaseYangtze yawo wonke umuntu.
Isikhathi sokuthumela: Sep-05-2023
