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The Info List - Beryllium Hydroxide



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(i)

Magnesium hydroxide
Magnesium hydroxide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).

N verify (what is YN ?)

Infobox references

BERYLLIUM HYDROXIDE, Be(OH)2, is an amphoteric hydroxide , dissolving in both acids and alkalis . Industrially, it is produced as a by-product in the extraction of beryllium metal from the ores beryl and bertrandite . The natural pure beryllium hydroxide is rare (in form of the mineral behoite, orthorhombic) or very rare (clinobehoite, monoclinic). When alkali is added to beryllium salt solutions the α-form (a gel) is formed. If this left to stand or boiled, the rhombic β-form precipitates. This has the same structure as zinc hydroxide , Zn(OH)2, with tetrahedral beryllium centers.

REACTIONS

With alkalis it dissolves to form the tetrahydroxidoberyllate(2-) anion. With sodium hydroxide solution: 2NaOH(aq) + Be(OH)2(s) → Na2Be(OH)4(aq)

With acids, beryllium salts are formed. For example, with sulfuric acid , H2SO4, beryllium sulfate is formed: Be(OH)2 + H2SO4 → BeSO4 + 2H2O

Beryllium
Beryllium
hydroxide dehydrates at 400 °C to form the soluble white powder, beryllium oxide : Be(OH)2 → BeO + H2O

Further heating at higher temperature produces acid insoluble BeO.

REFERENCES

* ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8 * ^ Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. ISBN 0-618-94690-X . * ^ Zumdahl, Steven S. (2009). Chemical Principles 6th Ed. Houghton Mifflin Company. ISBN 0-618-94690-X . * ^ A B C "NIOSH Pocket Guide to Chemical Hazards #0054". National Institute for Occupational Safety and Health (NIOSH). * ^ Jessica Elzea Kogel, Nikhil C. Trivedi, James M. Barker and Stanley T. Krukowski, 2006, Industrial Minerals Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann . ISBN 0-08-037941-9 . * ^ A B C D Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0-12-352651-5

* v * t * e

Beryllium
Beryllium
compounds

* Be(BH4)2 * BeBr2 * BeCO3 * BeCl2 * BeF2 * BeH * BeH2 * BeI2 * Be(N3)2 * Be(NO3)2 * BeO * Be(OH)2 * BeS * BeSO3 * BeSO4 * BeTe * Be2C * Be3N2

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Hydroxides

H2O

He

LiOH Be(OH)2

B C NH3.H2O O F Ne

NaOH Mg(OH)2

Al(OH)3 Si P S Cl Ar

KOH Ca(OH)2 Sc(OH)3 Ti V Cr(OH)2 Cr(OH)3 Mn(OH)2 Fe(OH)2 Fe(OH)3 Co(OH)2 Ni(OH)2 CuOH Cu(OH)2 Zn(OH)2 Ga(OH)3 Ge(OH)2 As Se Br Kr

RbOH Sr(OH)2 Y(OH)3 Zr(OH)4 Nb Mo Tc Ru Rh Pd AgOH Cd(OH)2 In(OH)3 Sn(OH)2 Sn(OH)4 Sb(OH)3 Te I Xe

CsOH Ba(OH)2 * Hf Ta W Re Os Ir Pt Au(OH)3 Hg(OH)2 TlOH Tl(OH)3 Pb(OH)2 Pb(OH)4 Bi(OH)3 Po At Rn

Fr Ra ** Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

* La(OH)3 Ce(OH)3 Pr(OH)3 Nd(OH)3 Pm(OH)3 Sm(OH)3 Eu(OH)3 Gd(OH)3 Tb(OH)3 Dy(O