Good Wholesale Vendors Nano Mgco3 Powder - Selenium Se powder – Xinglu
Good Wholesale Vendors Nano Mgco3 Powder - Selenium Se powder – Xinglu Detail:
Product Description
selenium metal powder
1. Features
|
Symbol: |
Se |
|
CAS |
7782-49-2 |
|
Atomic Number: |
34 |
|
Atomic Weight: |
78.96 |
|
Density: |
4.79 gm/cc |
|
Melting Point: |
217 oC |
|
Boiling Point: |
684.9 oC |
|
Thermal Conductivity: |
0.00519 W/cm/K @ 298.2 K |
|
Electrical Resistivity: |
106 microhm-cm @ 0 oC |
|
Electronegativity: |
2.4 Paulings |
|
Specific Heat: |
0.767 Cal/g/K @ 25 oC |
|
Heat of Vaporization: |
3.34 K-cal/gm atom at 684.9 oC |
|
Heat of Fusion: |
1.22 Cal/gm mole |
3. Hazards
Selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function
4. Applications
Selenium is now used in a variety of applications, from glass and metallurgical applications to pigments, agriculture and electronics.
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Persisting in "High top quality, Prompt Delivery, Aggressive Price", now we have established long-term cooperation with customers from the two overseas and domestically and get new and aged clients' large comments for Good Wholesale Vendors Nano Mgco3 Powder - Selenium Se powder – Xinglu, The product will supply to all over the world, such as: Florida, Swaziland, Haiti, We believe that good business relationships will lead to mutual benefits and improvement for both parties. We now have established long-term and successful cooperative relationships with many customers through their confidence in our customized services and integrity in doing business. We also enjoy a high reputation through our good performance. Better performance will be expected as our principle of integrity. Devotion and Steadiness will remain as ever.
By Carlos from Swiss - 2017.09.09 10:18
Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!
By Hazel from Namibia - 2017.11.11 11:41
