Stabilized red phosphorus and process for making it

US4115522A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Horst Staendeke · Lohmar, DE
• Franz-Josef Dany · Lechenich, DE
• Joachim Kandler · Lechenich, DE

Key dates

• Filing date: Jul 11, 1977
• Grant date: Sep 19, 1978
• Expiry date: Jul 11, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B25/006
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention provides stabilized pulverulent red phosphorus. It 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 neutral aluminum, magnesium, calcium or zinc salt of orthophosphoric acid, the metal compound being present in the homogeneous blend in a proportion of about 0.5 to 5 weight %.