Nomenclature
CAS number: 7787-47-5
BeCl
2; mol wt 79.92.
Be 11.28%, Cl 88.72%.
Description and references
Prepn from the elements: Tannenbaum, Inorg. Synth. 5, 22 (1957); from
BeO, Cl2 and C: Ehrlich in Handbook
of Preparative Inorganic Chemistry vol. 1, G.
Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 889. Toxicity
data: K. W. Cochran et al., Fed.
Proc. 9, 264 (1950). Review of beryllium halides:
Bell, Adv. Inorg. Chem. Radiochem. 14, 255-332 (1972).
Properties
White to faintly yellow, very deliquesc, orthorhombic
crystals or cryst mass. Reported mp ranges from
399.2° to 440°. 399.2° is considered to
be the most reliable (Bell). bp 482.3°. Sublimes in vacuo at
300°. d 1.90. Very
sol in water with evolution of heat; the aq soln is strongly acid.
Sol in alcohol, ether, pyridine, CS2. Insol in benzene,
toluene. Keep tightly closed.Derivative
Tetrahydrate.
Properties
Monoclinic deliquesc platelets. Has been reported
to have 4 1/2 H2O: Semenenko, Turova, Russ. J. Inorg. Chem. 10, 42 (1965). LD50 in guinea pigs, rats (mg Be/kg): 63, 0.6 i.p. (Cochran).Caution
Beryllium and beryllium compounds
are listed as known human carcinogens: Report
on Carcinogens, Eleventh Edition (PB2005-104914, 2004)
p III-32.Use
Manuf of beryllium.
Anhydrous form used
as acid catalyst in organic reactions, similar to AlCl
3.