Amorphous pupa lulú, di dudu lori iduro ati kirisita lori alapapo;vitreous ati colloidal fọọmu le wa ni pese sile.
Fọọmu amorphous rọ ni 40 °C ati yo ni 217 °C.O ṣọwọn waye ni ipo ipilẹ rẹ ni iseda, tabi bi awọn agbo ogun irin funfun.
Àmì: | Se |
CAS | 7782-49-2 |
Nọmba Atomiki: | 34 |
Ìwúwo Atomiki: | 78.96 |
Ìwúwo: | 4,79 gm/cc |
Oju Iyọ: | 217 oC |
Oju Ise: | 684,9 oC |
Imudara Ooru: | 0.00519 W/cm/K @ 298.2 K |
Itanna Resisiti: | 106 microhm-cm @ 0 oC |
Electronegativity: | 2.4 Paulings |
Ooru kan pato: | 0.767 Cal/g/K @ 25 oC |
Ooru ti Vaporization: | 3.34 K-cal/gm atomu ni 684.9 oC |
Ooru ti Fusion: | 1,22 Cal / gm mole |
1 iṣelọpọ: selenium(I) kiloraidi, Selenium dichloride, Selenides, mercury selenide.
2 Imọ-ẹrọ giga ile-iṣẹ: asiwaju selenide, zinc selenide, Ejò indium gallium diselenide.
3 Electric: semiconductors, awọn irin elekitirosi, Tetraselenium tetranitride.
4 Kemistri: Selenols, selenium isotope, Ṣiṣu, ifihan aworan.
Ohun elo ile-iṣẹ 5: Ṣiṣe gilasi, ilu selenium, aworan elekitiroti, ohun elo opitika.
A jẹ olupese, ile-iṣẹ wa wa ni Shandong, ṣugbọn a tun le pese iṣẹ rira iduro kan fun ọ!
T/T (gbigbe telex), Western Union, MoneyGram, BTC (bitcoin), ati bẹbẹ lọ.
≤25kg: laarin awọn ọjọ iṣẹ mẹta lẹhin ti owo ti gba.25kg: ọsẹ kan
Wa, a le pese awọn ayẹwo ọfẹ kekere fun idi idiyele didara!
1kg fun apo fpr awọn ayẹwo, 25kg tabi 50kg fun ilu kan, tabi bi o ṣe nilo.
Tọju eiyan naa ni wiwọ ni pipade ni gbigbẹ, itura ati aaye ti o ni afẹfẹ daradara.