?? ?????
|
|
?? ????? ??
- ??
- 3.57
- ???
- reacts with H2O
- ??? ??
- ??-?? ???
- ??
- white-brown cubic crystals, crystalline
- ???
- ??? ???
- ??
- Moisture Sensitive
- Merck
- 14,1701
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ????(UN No.) | UN3134 | ||
|---|---|---|---|
| TSCA | Yes | ||
| ?? ?? | 4.3 | ||
| ???? | III | ||
| ???? ?? | KE-04606 | ||
| ?????? ??? | 97-1-134 | ||
| ?? ? ???? | ????: ????; ???(??)????: ??? ?? ? ???? ?????? 1% ?? ??? ??? |
| ????(GHS): |
   
|
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ?? ?: | ||||||||||||||||||||||||||||||||||||||||||||||||||
| ??·?? ??: |
|
|||||||||||||||||||||||||||||||||||||||||||||||||
| ??????: |
|
?? ????? C??? ??, ??, ??
??? ??
-20 mesh 99.5% pure; white powder(s); in air may turn red within a few minutes, and light brown in a few hours; obtained by reduction of CaSeO4 with H2 at 400°C–500°C; used in electron emitter devices [CER91] [MER06]??
In electron emitters.?? ????? ?? ?? ? ???
???
?? ??
?? ????? ?? ??
???( 18)?? ??
| ??? | ?? | ??? | ?? | ?? ? | ?? |
|---|---|---|---|---|---|
| Shaanxi Dideu Medichem Co. Ltd | +86-29-81148696 +86-15536356810 |
1022@dideu.com | China | 3882 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28172 | 58 |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39894 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 |
1026@dideu.com | China | 7724 | 58 |
| Energy Chemical | 021-021-58432009 400-005-6266 |
sales8178@energy-chemical.com | China | 44689 | 61 |
| Beijing HuaMeiHuLiBiological Chemical | 010-56205725 |
waley188@sohu.com | China | 12335 | 58 |
| Shanghai Macklin Biochemical Co.,Ltd. | 15221275939 15221275939 |
shenlinxing@macklin.cn | China | 16166 | 55 |
| Hangzhou J&H Chemical Co., Ltd. | 0571-+86-571-87396432 |
sales@jhechem.com | China | 11481 | 59 |
| Guangdong wengjiang Chemical Reagent Co., Ltd. | 0751-2886750 13927877953 |
3005811397@qq.com | China | 13320 | 58 |
| Zhengzhou Akem Chemical Co., Ltd | 13303867194 |
3001317055@qq.com | China | 9995 | 58 |