离岸价格
获取最新报价|
- Minimum Order
国家:
China
型号:
H2Se
离岸价格:
位置:
China
最小订单价格:
-
最小订单:
-
包装细节:
seamless steel Cylinders
交货时间:
4 weeks
供应能力:
-
付款方式:
T/T, L/C, D/A, D/P
產品組 :
联系人 Mr. tony
Jinfeng Road,Heshun,Lishui,Nanhai, Foshan, Guangdong
H2Se is commonly used
in the synthesis of Se-containing compounds. It adds across
alkenes. Illustrative is the synthesis of selenoureas from
nitriles. H2Se gas is
used to dope semiconductors with selenium.
Safety
The gas is hazardous, being one of the most toxic compound of selenium and far more toxic than its congener hydrogen sulfide. The threshold limit value is 0.*5 ppm. At high concentrations even exposure for less than a minute causes the gas to attack the eyes and mucous membranes causing cold-like symptoms for at least a few days afterwards. In Germany, the limit in drinking water is 0.**8 mg/L, and the US EPA recommends a maximum contamination of 0.*1 mg/L.
| 国家: | China |
| 型号: | H2Se |
| 离岸价格: | 获取最新报价 |
| 位置: | China |
| 最小订单价格: | - |
| 最小订单: | - |
| 包装细节: | seamless steel Cylinders |
| 交货时间: | 4 weeks |
| 供应能力: | - |
| 付款方式: | T/T, L/C, D/A, D/P |
| 產品組 : | industrial specialty gas |
