Amorphous Elemental Boron
Government stXiHu (West Lake) Dis.Hu (West Lake) Dis.rd: Q/YTY002-2011
English alias: Boron
CAS RN: 7440-42-eight
1. Physical and chemical homes:
1.1 Elementary symbol: B
one.2 Atomic weight: ten.eighty one(on 1979 intercontinental atomic bodyweight)
one.3 Melting point: 2300 plusmn2 ordmC
1.four Sublimation temperature: 2550 ordmC
1.5 Particular gravity: two.34-two.37
one.6 Solubility: Insoluble in h2o, ethanol, ethyl ether and hydrochloric acid, but dissolved in chilly concentrated standard answer and decomposed Htwo at the identical time. It can be oXiHu (West Lake) Dis.dized by concentrated sulfuric acid or nitric acid to boric acid.
1.7 Qualities:
Boron is in between steel collection with nonmetal collection on the periodic desk of aspects. As its powerful electronegative, tiny atomic radius, and centralized nuclear cost, the chemical qualities of it are reactive. It is stable in standard temperature, but it is oXiHu (West Lake) Dis.dized when heated to 300 ordmC and burned if heated to seven hundred ordmC. It is tasteless and odorless.
Its nonmetal house is related to silicon. In substantial temperature, boron can respond with oxygen, nitrogen, sulfur, halogen or carbon, and so on. It can be mixed straight with a lot of kinds of metals to kind boride. In addition, boron can be also reacted with organic compounds to synthesize some compounds, in which boron is right joined to carbon, or oxygen eXiHu (West Lake) Dis.sts between boron and carbon.
two. Specialized indexes:
|
Product |
1st quality |
2nd quality |
3rd quality |
|
Total Boron(B) content material,% |
ge95. |
ge92 |
ge90 |
|
Drinking water soluble Boron(B) content material % |
le0.sixty |
le0.eighty |
le1.00 |
|
pH value |
six.-8. |
six.-8. |
six.-8. |
|
Humidity content, % |
le1.00 |
le1.00 |
le1.00 |
|
HtwoOtwo insoluble, % |
le0.70 |
le0.70 |
le1.fifty |
|
Appearance |
Pale brown or brown-black powder |
||
three. Software: Boron has been employed primarily in metallurgy, electronics, drugs, ceramics, nuke business and chemical market and so forth, and it has been used in the type of compound or as a additive in alloys. It can be employed in smelting of some EPT alloy steels and as the gasoline scavenger for the melting steel, in the ignitor of igniton in the electric powered industry, in the management rod of atomic reactor, and as the large-energy fuels for rocket. It has been as an EPTant materials for producing large-purity of halogenated boron and a raw materials for a range of borides. A whole lot of rare noble metals can be substituted and saved by it. Boron and its compounds can be also utilized as the catalyst of some organic and natural chemical reactions, and many others.
four. EPT directions: ToXiHu (West Lake) Dis.c by ingestion and inhalation. The central nervous system is affected by ingestion, gastrointestinal tract is stimulated by inhalation and boron poisoning. Eyes bear sligEPT stimulation as well. Operation need to be put in with rubber gloves, a respirator and eye safety by putting on protective apparel.
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