Amorphous Elemental Boron
Executive stXiHu (West Lake) Dis.Hu (West Lake) Dis.rd: Q/YTY002-2011
English alias: Boron
CAS RN: 7440-42-8
1. Bodily and chemical homes:
one.one Elementary symbol: B
1.two Atomic bodyweight: ten.eighty one(on 1979 global atomic bodyweight)
one.three Melting stage: 2300 plusmn2 ordmC
1.4 Sublimation temperature: 2550 ordmC
1.5 Certain gravity: 2.34-two.37
one.6 Solubility: Insoluble in h2o, ethanol, ethyl ether and hydrochloric acid, but dissolved in chilly concentrated basic answer and decomposed H2 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 among steel collection with nonmetal collection on the periodic table of components. As its robust electronegative, modest atomic radius, and centralized nuclear demand, the chemical homes of it are reactive. It is steady in standard temperature, but it is oXiHu (West Lake) Dis.dized when heated to three hundred ordmC and burned if heated to 700 ordmC. It is tasteless and odorless.
Its nonmetal house is related to silicon. In substantial temperature, boron can react with oxygen, nitrogen, sulfur, halogen or carbon, etc. It can be combined straight with a lot of types of metals to kind boride. Moreover, boron can be also reacted with organic and natural compounds to synthesize some compounds, in which boron is right joined to carbon, or oxygen eXiHu (West Lake) Dis.sts among boron and carbon.
2. Specialized indexes:
|
Merchandise |
onest quality |
twond quality |
threerd grade |
|
Total Boron(B) articles,% |
ge95. |
ge92 |
ge90 |
|
Water soluble Boron(B) content % |
le0.sixty |
le0.eighty |
le1.00 |
|
pH benefit |
six.-eight. |
six.-eight. |
six.-eight. |
|
Moisture content material, % |
le1.00 |
le1.00 |
le1.00 |
|
HtwoOtwo insoluble, % |
le0.70 |
le0.70 |
le1.50 |
|
Visual appeal |
Pale brown or brown-black powder |
||
three. Application: Boron has been utilised mainly in metallurgy, electronics, medication, ceramics, nuke industry and chemical sector and many others, and it has been utilised in the sort of compound or as a additive in alloys. It can be utilized in smelting of some EPT alloy steels and as the fuel scavenger for the melting steel, in the ignitor of igniton in the electrical industry, in the management rod of atomic reactor, and as the higher-vitality fuels for rocket. It has been as an EPTant content for producing higher-purity of halogenated boron and a raw material for a variety of borides. A lot of unusual noble metals can be substituted and saved by it. Boron and its compounds can be also employed as the catalyst of some organic chemical reactions, and so forth.
4. EPT recommendations: ToXiHu (West Lake) Dis.c by ingestion and inhalation. The central nervous technique is influenced by ingestion, gastrointestinal tract is stimulated by inhalation and boron poisoning. Eyes bear sligEPT stimulation as properly. Operation must be set up with rubber gloves, a respirator and eye protection by sporting protecting garments.
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