High Purityse Powder CAS 7782-49-2 Clean Ingredients Selenium Powder

• Customization: Available
• CAS No.: 7782-49-2
• Formula: Se
• Model NO.: Food additives
• Resource: Natural
• Application: Food, Health Care Products, Medicine
• Form: Powder
• Grade: Medical Grade
• Colour: Black
• Transport Package: Drum
• Specification: 99%
• Trademark: zhuofeng
• Origin: China
• HS Code: 3502110000
• Production Capacity: 5000mt/Month

Product Description

    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.

Product	Boron powder
CAS No	7440-42-8
Quality	95%min	Quantity:	2000kg
Batch No.	2020101602	Date of test:	Oct. 16, 2020
Date of manufacturing:	Oct. 16, 2020	Date of expiry:	Oct. 16, 2022
Parameters	Specification		Results
Appearance	Brown to black powder		Conformed
Total B content	≥95%		95.6%
Mg	≤2%		1.32%
Water-soluble boron	≤0.5%		0.46%
Insoluble in H2O2	≤0.3%		0.2%
PH value	6.0-8.0		6.8
Water	≤0.45%		0.32%
Average Particle size	1um ( For other particle size, it can be customized)
Conclusion:	Comply to the enterprise standard.

Grade	Purity	Mg	Insoluble in H2O2	Water soluble boron	Avg. Particle Size (D50)
B85	85%~88%	≤12.0%	≤ 1.5%	≤ 1.0%	≤ 1µm
B90	90%~92%	≤6.0%	≤ 1.0%	≤ 0.5%	≤ 1µm
B95	95%~97%	≤2.0%	≤ 1.0%	≤ 0.5%	≤ 1

1.Used for doping of semiconductor material silicon, high temperature resistant material, high temperature high power
semiconductor and metal spraying additive.

2.Mainly used for special alloy steel smelting, can also be used as gas scavenger in molten copper, control rod in atomic reactor and rocket fuel making; In the electronics industry, the igniters are doped with the element boron; It can also be used as catalyst in medicine, ceramic industry and organic synthesis. It is a raw material for making various borides.

3.Used as semiconductor material silicon doping source, high-temperature high-power semiconductor device
materials, infrared device materials.

4.Used as semiconductor dopant, high-purity reagents.

5.For powder metallurgy additives and thermal spraying and other surface coating materials, but also for the semiconductor industry.

· 1kg/aluminium foil bag, with two plastic bags inside.
· 25kg/fiber drum, with two plastic bags inside.
· Size:ID 42cm*H52cm,0.08m3/drum;
· Net Weight:25kgs Gross Weight:28kgs.

·≤50kg, Express delivery recommended, usually called as DDU service;
·≤500kg,Air shipping recommended, usually called as CIF service;
·>500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;
·For high value products, please select air shipping and express delivery for safety.