Stabilized red phosphorus and process for making it

Details Stabilized red phosphorus and process for making it Stabilized red phosphorus and process for making it

1977-10-13

1979-01-23

Silverberg, Sam

Chemistry of inorganic compounds

With additive

2605024R, 423322, C01B 522

Patent

active

041361547

ABSTRACT:
Production of stabilized pulverulent red phosphorus. The phosphorus so stabilized comprises a homogeneous blend of red phosphorus particles with a size of at most about 2 mm and a metal compound of the second or third group of the Periodic System as an oxidation stabilizer, wherein the metal compound is the aluminum, calcium or zinc salt of a phosphinic acid of the general formula ##STR1## in which R.sub.1 and R.sub.2 each stand for an alkyl, cycloalkyl, aryl or aralkyl group having 1 to 20 carbon atoms, the metal compound being present in the homogeneous blend in a proportion of about 0.5 to 5 weight %.

REFERENCES:
patent: 1880535 (1932-10-01), Waggaman
patent: 2559685 (1949-04-01), Imyokern

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