On Thursday, U.S. time, U.S. stocks staged a “roller coaster” market
throughout the day.
The three major stock indexes opened higher collectively. Then, during the
Federal Reserve Chairman Powell’s attendance at the congressional hearing, the
market’s risk aversion increased significantly, and the three major stock
indexes quickly turned down. , the Dow closed up 0.64%, the S&P 500 rose
0.95%, and the Nasdaq rose 1.62%. All three major stock indexes hit new closing
highs since June 10.
On the disk, leading technology stocks generally rose, Amazon rose more than
3%, Microsoft and Apple also rose more than 2%. Popular Chinese concept stocks
outperformed the broader market on the second trading day this week. The Nasdaq
Golden Dragon China Index closed up more than 3% that day, Pinduoduo rose more
than 6%, and Xiaopeng Motors closed up nearly 8% to its highest level since
early March this year .
What Is Amorphous Boron Powder?
Amorphous boron powder is a black or dark brown powder, which can react with fluorine
at room temperature and will not be corroded by alkali and hydrofluoric acid
aqueous solutions. Boron powder is also called amorphous boron. Boron has a high
mass calorific value and volume calorific value. It is a light brown to
gray-black powder with relatively active chemical properties, but it is
relatively stable at room temperature and will be oxidized when the temperature
reaches 300 degrees Celsius. The ignition level is very high, requiring 700
degrees Celsius to ignite. Boron powder can react with oxygen, nitrogen and
sulfur, or it can directly combine with certain metals to form certain
borides.
Amorphous boron is a brown powder; amorphous boron is a brown powder.
Amorphous boron is a brown powder. Crystalline boron is black, very hard
(approximately 9.5 at Mohs hardness), and has a poor conductor at room
temperature. Element boron is used as a dopant in the semiconductor industry,
and boron compounds play an important role as light structural materials,
pesticides and preservatives, and chemical synthesis reagents. Feel free to send
an inquiry to get the latest price if you would like to buy Boron Powder
Amorphous Boron Powder in bulk.
What Are The Properties of Amorphous Boron Powder?
Elemental boron CAS 7440-42-8 is a black or dark brown powder. When it is
oxidized in the air, it will prevent the internal boron from continuing to
oxidize due to the formation of a boron trioxide film. It can react with
fluorine at normal temperature and is not corroded by hydrochloric acid and
hydrofluoric acid aqueous solution. Boron is insoluble in water, powdered boron
is soluble in boiling nitric acid and sulfuric acid, and most molten metals such
as copper, iron, manganese, aluminum, and calcium.
Amorphous Boron Powder MF:B
Amorphous Boron Powder MW:10.81
Amorphous Boron Powder Melting point:2300 ℃ ±2 ℃
Amorphous Boron Powder Sublimation temperature:2550 ℃
Amorphous Boron Powder Relative density:2.34-2.37
Amorphous Boron Powder Solubility: Insoluble in water, hydrochloric acid,
ethanol and ether, soluble in cold
concentrated alkali solution decompose into hydrogen, by concentrated
sulfuric acid, nitric acid oxidation into boric acid.
What Are The Applications of Amorphous Boron Powder?
Boron powder is commonly used in metal smelting, electronic product
manufacturing, ceramic manufacturing, chemical industry and nuclear industry,
etc. The specific functions of boron nitride are as follows:
1. Boron powder can be used to make various boron-containing compounds, used
as raw materials for the production of boron fibers, and important raw materials
for the production of high-purity boron halide;
2. Boron powder is added in the form of a compound as a gas scavenger for the
smelting of special alloy steel or molten steel;
3. Boron powder is used as high-energy fuel for rocket spacecraft,
4. Boron powder is used as the ignition pole of the ignition tube in the
electronics industry;
5. Boron powder replaces precious or scarce metals;
6. Boron powder is used as a protective material for the atomic energy
industry and the control rod in the atomic reactor;
7.Boron powder also can be used as a catalyst for organic chemical
reactions.
What Is The Storage Condition of Amorphous Boron Powder?
Damp reunion will affect boron powder dispersion performance and using
effects, therefore, amorphous boron powder should be sealed in vacuum packing
and stored in cool and dry room, the amorphous boron powder can not be exposure
to air. In addition, the amorphous boron powder should be avoided under
stress.
Amorphous Boron Powder Supplier:
TRUNNANO is a reliable amorphous boron powder supplier with over 12-year
experience in nano-building energy conservation and nanotechnology
development.
If you are looking for high-quality amorphous boron powder, please feel free
to contact us and send an inquiry. (sales3@nanotrun.com)
We accept payment via Credit Card, T/T, West Union, and Paypal. Trunnano will
ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
