Preparation of red amorphous selenium

Details Preparation of red amorphous selenium Preparation of red amorphous selenium

1976-01-16

1977-02-22

Stern, Edward

Chemistry of inorganic compounds

Selenium or tellurium or compound thereof

Elemental selenium or tellurium

423508, 96 15, C01B 1900

Patent

active

040092496

ABSTRACT:
Red amorphous selenium is obtained by precipitating selenium from a solution of selenious acid in methanol or ethanol with hydrazine or a soluble salt thereof at a temperature between about -20.degree. C. and the freezing point of the solution. Furthermore, the stable red amorphous selenium may contain a halogen.

REFERENCES:
patent: 2111112 (1938-03-01), Dudley
patent: 3110685 (1963-11-01), Offergeld
Journ. of the Chem. Society, 1904, vol. LXXXVI, Part II, p. 83.
Journ. of Physical Chem., vol. 4, 1900, p. 463.
"Selenium " pamphlet, 1908, Paper Read by Dr. Fred Klein, pp. 9 and 19.
J. Inorg. Nucl. Chem., 1960, vol. 13, pp. 58 and 59, Pergamon Press Ltd. Printed in No. Ireland.

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