CAS 7782-49-2 Siab Purity 99.9% -99.999% Selenium See Hmoov lossis Granules Nqe

CAS 7782-49-2 Siab Siab Purity 99.9% -99.999% Selenium See Hmoov lossis Granules Nqe Featured Duab
  • CAS 7782-49-2 Siab Purity 99.9% -99.999% Selenium See Hmoov lossis Granules Nqe
  • CAS 7782-49-2 Siab Purity 99.9% -99.999% Selenium See Hmoov lossis Granules Nqe
  • CAS 7782-49-2 Siab Purity 99.9% -99.999% Selenium See Hmoov lossis Granules Nqe

Cov lus piav qhia luv luv:

Khoom npe: Selenium se

Cov Qauv: Se

Purity: 99.9% - 99.999%

CAS TSIS: 7782-49-2

Zog: Dub Hmoov

Qhov loj me me: 200 mesh


Khoom Qhia Qhia

Khoom Ntawv

Khoom Piav Qhia

Amorphous liab hmoov, ua dub rau sawv thiab crystalline ntawm cua sov; Cov ntawv colreus thiab colloidal yuav npaj tau.

Amorphous daim ntawv muag ntawm 40 ° C thiab melts ntawm 217 ° C. Nws tsis tshua muaj tshwm sim hauv nws lub ntsiab ntawm lub xeev hauv kev xwm, lossis raws li cov tshuaj sib txuas dawb huv.

Kev qhia tshwj xeeb

Cim cim:
Se
Cas
7782-49-2
Atomic tus naj npawb:
34
Atomic hnyav:
78.96
Ntawj ntom:
4.79 GM / CC
Melting taw tes:
217 OC
Boiling taw tes:
684.9 OC
Thermal Condivity:
0.00519 w / k @ 298.2 k
Hluav Taws Xob Tiv Thaiv:
106 microhm-cm @ 0 oc
ElectroneGativity:
2.4 Phows
Thaum tshav kub kub tshwj xeeb:
0.767 cal / g / k 25 25 oc
Thaum tshav kub kub ntawm vaporization:
3.34 K-cal / GM Atom ntawm 684.9 OC
Tshav kub ntawm Fusion:
1.22 cal / gm mole

 

Daim ntawv thov

1 kev tsim khoom: Selenium (Kuv) Chlorid, Selenium Dichhloride, Selenides, Mercury Selenide.

2 Kev Tshawb Fawb Siab Siab Tshaj: Ua Selenide, Zinc Selenide, tooj liab Incium diselenide.

3 FAIS: semiconductors, electropositate hlau, tetraselenium tetranitride.

4 Chemistry: Selenols, Selenium Isotope, Plastics, Kev Yees Duab Raug.

5 Daim Ntawv Thov Kev Lag Luam: Iav Ua, Selenium Nruas, Electrostatic Duab thaij duab, ntsuas qhov muag.

Peb Qhov Zoo

Tsawg-ntiaj teb-scandium-oxide-nrog-zoo-nqe-2

Kev pabcuam peb tuaj yeem muab

1) Daim ntawv cog lus raug cai tuaj yeem kos npe

2) Kev Pom Zoo Tsis pub lwm tus paub tuaj yeem kos npe

3) Muaj xya hnub rov qab lav

Tseem ceeb tshaj: Peb tuaj yeem muab cov khoom lag luam tsuas yog, tab sis kev pabcuam tshuab thev naus laus zis!

Cov FAQ

Koj puas yog tsim lossis pauv?

Peb yog cov chaw tsim khoom, peb lub Hoobkas nyob hauv Shandong, tab sis peb kuj tseem tuaj yeem muab ib qho kev yuav khoom rau koj!

Cov ntsiab lus them nqi

T / T (Telek Hloov), Western Union, MoneyGram, BTC (Bitcoin), thiab lwm yam.

Lem sij hawm

≤25KG: Hauv peb hnub ua haujlwm tom qab tau txais nyiaj. > 25kg: ib lub lim tiam

Khoom sim

Muaj, peb tuaj yeem muab cov qauv dawb rau kev ntsuas lub hom phiaj zoo!

Lub thawv

1kg ib lub hnab FPR kuaj, 25kg lossis 50kg rau ib nruas, lossis raws li koj xav tau.

Chaw ntim khoom

Khaws lub thawv ntim kom nruj rau hauv qhov chaw qhuav, txias thiab muaj qhov zoo.

  • Yav dhau los:
  • Tom ntej:

    • Lwm Yam Khoom