Production of acicular ferric oxide

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing

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Details

23300, 23305F, 423266, 423633, 423634, 252 6256, C01G 4906, C01G 4908, B01J 1704

Patent

active

042028710

ABSTRACT:
Single crystalline, acicular ferric oxide particles are produced by maintaining an aqueous suspension of ferric hydroxide at an elevated temperature at an alkaline pH in the presence of an organic phosphonic acid compound or a hydroxycarboxylic acid compound as a growth-regulating agent.

REFERENCES:
patent: 4071610 (1978-01-01), Koester et al.

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