High Purity 3n 4n 5n Superfine Se Powder CAS 7782-49-2 Selenium Powder

Product Description

High purity 3N 4N 5N superfine Se powder cas 7782-49-2 selenium powder

1. Features of selenium powder

Amorphous red powder, becoming black on standing and crystalline on heating; vitreous and colloidal forms may be prepared. Amorphous form softens at 40 °C and melts at 217 °C. It rarely occurs in its elemental state in nature, or as pure ore compounds. Soluble in concentrated nitric acid and in (liquid form) common alkalies. Forms binary alloys with silver, copper, zinc, lead, etc. Low toxicity. A necessary nutritional factor for animals.

 

Symbol:	Se
selenium powder CAS	7782-49-2
selenium powder Atomic Number:	34
selenium powder Atomic Weight:	78.96
selenium powder Density:	4.79 gm/cc
selenium powder Melting Point:	217 oC
selenium powder Boiling Point:	684.9 oC
selenium powder Thermal Conductivity:	0.00519 W/cm/K @ 298.2 K
selenium powder Electrical Resistivity:	106 microhm-cm @ 0 oC
selenium powder Electronegativity:	2.4 Paulings
selenium powder Specific Heat:	0.767 Cal/g/K @ 25 oC
selenium powder Heat of Vaporization:	3.34 K-cal/gm atom at 684.9 oC
selenium powder Heat of Fusion:	1.22 Cal/gm mole

3. Specification of selenium powder

Se %

Cu %

Hg %

As %

Sb %

Te %

Pb %

Fe %

Sn %

Ni %

Bi %

Al %

Si %

S %

99.99 min

0.01max

0.02

0.01

0.03max

0.01max

0.03max

0.09

0.01max

0.01

0.01max

0.01max

0.02

0.03

4. Hazards of Se selenium powder

Selenium salts are toxic in large amounts, but trace amounts are necessary for cellular function

5. Applications of selenium powder

selenium powder could be used in different fields, according to its purity. Selenium is now used in a variety of applications, from glass and metallurgical applications to pigments, agriculture and electronics.

Our Advantages

 

Service we can provide

1) Formal contract can be signed

2)Confidentiality agreement can be signed

3) Seven days refund guarantee

More important: we can provide not only product, but technology solution service!

 

 

Packaging & Shipping

 

 

To better guarantee the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
 

Company Profile

 

Company Introduction

Shanghai Epoch Material Co., Ltd. is located in the economic center---Shanghai. We always adhere to "Advanced materials, better life" and committee to the Research and Development of technology, to make it used in human beings' daily life to make our life more better.

Now, we mainly dealing with rare earth materials, nano materials, OLED materials, and other advanced materials. These advanced materials are widely used in chemistry,biology, OLED display, OLED light, environmental protection, new energy, etc.

For current time, we have two production factories in Shandong Province. It covers a area of 30,000 square meters, and has workers more than 100 persons, of which 10 persons are senior engineers. We have established a production line suitable for research, pilot test, and mass production, and also established two labs, and one testing center. We test each lot of product before delivery to make sure we provide good quality product to our customer.

We welcome customers from worldwide to visit our factory and establish a good cooperation together!

There is a old saying in China that we are more than glad to see friends and customers from all over the world!

Our company has passed through the management system of ISO 9001, and we have our own SOP system for production, sales, and after sales service! Hope we could provide a good and professional service for you!

 

Marketing Compaign

Welcome all customers from worldwide!

We have customers worldwide, and till now, have establish a good coopperation with Sumsung, LG, LV, as well as many other customers as well, and for further info, please contact us!

 

FAQ

 

1) Are you manufacture or trade? We are manufacturer, our factory is located in Shandong, but we can also provide one stop purchasing service for you!   2)Payment terms: T/T(telex transfer), Western Union, MoneyGram, Credit Card, BTC(bitcoin), etc.   3)Lead time ≤25kg: within three working days after payment received. >25kg: one week

4)Sample Available, we can provide small free samples for quality evaluation purpose!   5)Package 1kg per bag for samples, 25kg or 50kg per drum, or as you required.   6)Storage Store the container tightly closed in a dry, cool and well-ventilated place.