Amorphous Elemental Boron

Govt stXiHu (West Lake) Dis.Hu (West Lake) Dis.rd: Q/YTY002-2011

English alias: Boron

CAS RN: 7440-forty two-eight

1. Actual physical and chemical houses:

one.one Elementary symbol: B

1.2 Atomic fat: ten.eighty one(on 1979 worldwide atomic bodyweight)

one.3 Melting level: 2300 plusmn2 ordmC

one.four Sublimation temperature: 2550 ordmC

one.five Distinct gravity: 2.34-2.37

1.six Solubility: Insoluble in water, ethanol, ethyl ether and hydrochloric acid, but dissolved in cold concentrated standard solution and decomposed H₂ at the very same time. It can be oXiHu (West Lake) Dis.dized by concentrated sulfuric acid or nitric acid to boric acid.

1.seven Qualities:

Boron is in between steel series with nonmetal collection on the periodic desk of aspects. As its strong electronegative, tiny atomic radius, and centralized nuclear cost, the chemical qualities of it are reactive. It is stable in regular temperature, but it is oXiHu (West Lake) Dis.dized when heated to three hundred ordmC and burned if heated to seven-hundred ordmC. It is tasteless and odorless.

Its nonmetal home is related to silicon. In substantial temperature, boron can respond with oxygen, nitrogen, sulfur, halogen or carbon, and so on. It can be merged right with a lot of kinds of metals to sort boride. Moreover, boron can be also reacted with organic and natural compounds to synthesize some compounds, in which boron is immediately joined to carbon, or oxygen eXiHu (West Lake) Dis.sts between boron and carbon.

2. Technical indexes:

Merchandise	1st quality	2nd quality	threerd grade
Total Boron(B) content,%	ge95.	ge92	ge90
H2o soluble Boron(B) articles %	le0.60	le0.80	le1.00
pH benefit	6.-8.	6.-eight.	six.-eight.
Humidity content, %	le1.00	le1.00	le1.00
H2O2 insoluble, %	le0.70	le0.70	le1.fifty
Physical appearance	Pale brown or brown-black powder

three. Application: Boron has been utilized largely in metallurgy, electronics, drugs, ceramics, nuke market and chemical sector and so on, and it has been utilised in the kind of compound or as a additive in alloys. It can be utilised in smelting of some EPT alloy steels and as the gasoline scavenger for the melting steel, in the ignitor of igniton in the electrical market, in the manage rod of atomic reactor, and as the high-energy fuels for rocket. It has been as an EPTant material for manufacturing higher-purity of halogenated boron and a uncooked content for a variety of borides. A great deal of uncommon noble metals can be substituted and saved by it. Boron and its compounds can be also utilized as the catalyst of some natural and organic chemical reactions, and so forth.

four. EPT recommendations: ToXiHu (West Lake) Dis.c by ingestion and inhalation. The central nervous method is influenced 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 defense by putting on protective garments.

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