Selenium dioxide (selenious acid anhydride, Selenious anhydride, SeO2 )
Purity:98%-99%,
Molecular formula: SeO2
Molar mass: 110.96 g/mol
Appearance White crystalline solid
Density 3.95 g/cm3, solid
Boiling point 315 ° C sublimes
Test | Result |
Purity | ≥99.0%min |
Loss on drying | ≤1.0% |
Sulfate | ≤0.03% |
Insoluble matter | ≤0.02% |
Heavy metal | ≤0.0008 |
Fe | ≤0.002% |
Cl | ≤0.005% |
Conclusion | Pass |
1. It is used for the production of electrolytic manganese metal.
2, used in the production of sodium' selenite.
3, two selenium oxide is used as organic compound oxidant, catalyst, chemical reagent, all kinds of inorganic seleniums compound made of raw materials. As a special reagent of alkaloids, can also be used in the preparation of zirconium, hafnium and seleniums compounds react with ammo-nia to generate nitrogen and seleniums precipitation, generating selenite ethyl ammonium, amorphous seleniums and hydrazine and nitrogen generating black, amorphous seleniums and formation of hydroxylamine hydrochloride nitrogen and red brown, with nitric' acid to produce selenite.
4, two selenium oxide is used to make high pure seleniums and other seleniums compounds.
Packaging
Liquid:
Iron drum & plastic drum packaging
1kg 25kg 200kg drum
IBC/ISO tank
Solid:
Plastic bag & kraft paper bag & fiber drum
1kg Aluminum Foil bag
25kg bag/drum
Shipping:
1) By Express: EMS/ DHL/ FedEx/ TNT/ UPS for sample or small order
2) By air or Sea for mass order
For small order, please expect 3-7 days by UPS DHL EMS FedEx.
For mass order, please allow 5-8 days by Air, 15-30 days by Sea.
Hebei Fengqiang Trading Co., Ltd. is a new chemiacl enterprise in integrating R&D, production and sales. Locateed in Shijiazhuang Hebei. Our company mainly working on Cosmetic Raw Matericals. Meanwhile, we made huge breakthrough in Industral of Food, Feed Additives, Intermediates, Dye and Industrial chemcials.
Our company has an independent R&D team, which can develop and customize any pharmaceutical and Cosmetic Raw Materials with low price, high quality and first-class service! Fengqiang′s products are widely exported to the United States, Russia, Canada, Australia, Europe and many other countries with double-clearance door-to-door delivery services. With honest and credible business philosophy.
We will always adhere to expand business scope and provide the best quality products and service to the world.
1) The professional sales reprensentative answers your inquiy on time;
2) We can provide reasonable price, high quality product and prompt shipmen;
3) We can send the goods to your delivery addreee directly, it is relatively safe and fast;
4) Warm sfter sale service, we will help to solve the problems in your usage.
Q1: Can i get small sample?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union or Bitcoin.
Q3:What's your MOQ?
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q4:How about the packing?
A: Usually we provide the packing as 25kg/ bag/ carton/ drum. And we also can according to your requirment.
Q5: How about delivery leadtime?
A:About 3-5 working days after receipt of your payment
Q6: How to contact us?
A:You can chat with us by Trademanager Online. You can choose your interested products and send inquiry to us.Send Email to us.