Selenium Dioxide CAS 7446-08-4 Chaw tsim tshuaj paus

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Selenium dioxide CAS 7446-08-4 Hoobkas khoom

Khoom npe:Selenium dioxide

CAS:7446-08-4 ib

MF:O2 Se

MW:110.96 Nws

EINECS:231-194-7 ib

Cim:neeg tsim khoom

Pob:1 kg / kg los yog 25 kg / nruas

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Product Detail

Khoom cim npe

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Khoom npe: Selenium dioxide
CAS: 7446-08-4 Nr
MF: O2 Se
PIB: 110.96
IB: 231-194-7
Melting point: 315 ° C (sub.) (lit.)
Kub taw tes: 684.9 ° C (lit.)
Ceev: 4.81 g / mL ntawm 25 ° C (lit.)
Vapor siab: 1 mm Hg (157 ° C)
Refractive index: nD20 <1.76
Fp: 315 ° C
PIB: 14,8434

Specification

Qhov tshwm sim	Dawb hmoov
Assay	99% min
Melting point	315 ° C (sub.) (lit.)
Boiling point	684.9 ° C (lit.)

Daim ntawv thov

1. Selenium dioxide cas 7446-08-4 siv nyob rau hauv kev tsim cov high-purity selenium thiab lwm yam selenium compounds, raws li zoo raws li ib tug oxidant thiab catalyst rau organic synthetic tshuaj.
2. Selenium dioxide cas 7446-08-4 siv los ua cov organic compound oxidant, catalyst, tshuaj reagent, raw khoom rau zus tau tej cov inorganic selenium tebchaw

Kev them nyiaj

* Peb tuaj yeem muab ntau txoj kev them nyiaj rau cov neeg siv khoom xaiv.

* Thaum tus nqi me me, cov neeg siv khoom feem ntau them nyiaj los ntawm PayPal, Western union, Alibaba, thiab lwm yam.

* Thaum tus nqi loj, cov neeg siv khoom feem ntau them nyiaj los ntawm T / T, L / C thaum pom, Alibaba, thiab lwm yam.

* Dhau li ntawd, cov neeg siv khoom ntau dua yuav siv Alipay lossis WeChat them kom them nyiaj.

Cia tej yam kev mob

Khaws rau hauv lub ventilated thiab qhuav warehouse.Ua tib zoo saib xyuas cov dej noo, thiab lub ntim yuav tsum tau muab kaw.Txhawm rau tiv thaiv kev puas tsuaj rau lub ntim.

Kev ruaj ntseg

1. Dawb lub teeb acicular crystalline hmoov, qaub saj thiab kub hnyiab.Nws vapor yog daj-ntsuab, nrog ib tug pungent saj, ruaj khov rau lub teeb thiab kub, thiab hygroscopic.Nws saj qaub thiab muaj qhov kub hnyiab.Nws yog oxidizing, thiab monomer selenium yuav precipitated thaum nws ntsib cov organic txo tus neeg sawv cev.lom.

2. Yooj yim txo rau selenium.

3. Siv cov cuab yeej tiv thaiv thaum ua haujlwm.Ua tib zoo saib xyuas cov concentration ntawm selenium hauv huab cua.Xyuas koj lub cev tsis tu ncua.Muab cov khoom noj uas muaj protein ntau thiab amino acids.

4. ruaj khov rau huab cua thiab av noo.Raws li nws muaj tshuaj lom heev, nws raug nquahu kom siv thiab ua tib zoo siv hauv lub fume hood.

Yav dhau los: 2-Hydroxyethyl methacrylate HEMA CAS 868-77-9

Tom ntej: Tellurium dioxide CAS 7446-07-3 Chaw tsim tshuaj paus