タイトルまたは説明

CAS *********8

Amorphous element boron

Molecular formula: B

Molecular weight: *0.*1

The total boron content of more than or equal to ****2 ****4%

Water soluble boron: less than 0.5% less than 0.4%

Product characteristics:

Amorphous boron powder also known as monomer boron, boron, it is black or brown amorphous powder. With active chemical properties, tasteless, odorless, stable in air and at room temperature, heated to **0 DEG C is oxidized to **0 DEG C of the burning, burning flame was red, micro gasification of boron flame is green. Boron insoluble in water, hydrochloric acid, ethanol, ethyl ether, sulfuric acid, nitric acid and molten metal, soluble in cold concentrated alkali solution and decomposition of hydrogen, concentrated nitric acid and concentrated sulfuric acid oxidation in boric acid. At high temperature, boron can with oxygen, nitrogen, sulfur and halogen and carbon interactions, boron can also with many metal direct combination, formation of metal compounds, but also can react with organic compounds can produce boron directly and is connected to the carbon combined with objects or boron and carbon are compounds in the presence of oxygen.

Monomer boron in the periodic table in the elements are divided into metal and nonmetal demarcation line color at a particular location is a preponderance of non metallic elements, highly charged, atomic radius is small, concentrated nuclear charge, non metallic nature and silicon similar. Its density 2.*5g/cm3. Hardness 9.3, specific gravity is 2.***2.*5, melting point: ***0, boiling point: ***0.