|Place of Origin:||China|
|Minimum Order Quantity:||negotiable|
|Packaging Details:||Generally vacumm packed in polyster bag or bottle,|
|Delivery Time:||7 working days after receiving payment details|
|Payment Terms:||L/C, T/T, Western Union|
|Name:||Selenium Metal Powder||Chemical Formula:||Se|
|Molecular Weight:||78.96||Boiling Point:||684.9±1.0 °C|
Selenium High Purity Metal Series Powder Se CAS 7782-49-2 used in producing selenium dioxide
Breif introduction of Selenium Metal Powder Se
Selenium is a chemical element with symbol Se and atmoic number 34.
It is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arenic.
It rarely occurs in its elemental state or as pure ore compounds in the Earth's crust.
Selenium has six naturally occurring isotopes. Black Selenium is a brittle, lustrous solid that is slightly soluble in CS2.
Application of Selenium Metal Powder Se
1. Used in producing selenium dioxide, used as catalyst for the electrolytic manganese smelting
2. Used in science high technology industry:lead selenide,zinc selenide, copper indium gallium diselenide.
3. Usedn for electric:semiconductors,electropositive metals,Tetraselenium tetranitride.
4. Used for chemistry:Selenols,selenium isotope,Plastics, photographic exposure.
5 . Industry application:Glass making,selenium drum, electrostatic photograph,optical instrument.
6. Used in the rectifier, photographic exposure dose, oil work catalyst, copy drums, selenium plate, alloy, feed and plastic, paint, enamel and glass in the paint, medical and health care drugs, etc.
Properties of Selenium Metal Powder Se
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.
Why choose us
1. Long history and high quality
More than 10 years experience in Chemcials industry. Design and manufacture high quality products with our qualified Lab.
2. Fast delivery and small order acceptable
Faster delivery by air or by express.(DHL,UPS ,TNT or Fedex). Small order is accepted, we treat every order well.
3. Wonderful team
Professional sales team to offer fast response within 24 hours and good service
1: May I get one sample before placing order?
Re: Yes, we'd like to provide sample for you. For those normal products, you just need to bear the freight; for those high value products, you just need to freight and a little product cost. When we both cooperate for some times or when you are our VIP customer, free sample will be offered when you need.
2: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, T/T, EMS, etc.) or by air. Usually it will cost 2-5 days that you can get the goods after delivery.
For large quantity products, It will cost days to weeks to come to your destination port, which depends on where the port is.
3: Is there any possible to use my appointed label or package?
Re: Sure. we'd like to use label or package according to your requirement if needed.
4: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are high qualified. If the goods can't come to the quality we promise, you can ask for refund.
Contact Person: Ms. Linda