STRONTIUM CARBONATE FINE POWDER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide needle-like strontium carbonate fine powder having a proper length and a high aspect ratio and a method for producing the same.SOLUTION: There is provided strontium carbonate fine powder having an average major axis length of 5 to 100 nm, an average aspect ratio of 2.0 or more and a content of needle-like particles having a major axis length of 150 nm or more of 5% or less in terms of the number of particles. In addition, there is provided a method for producing strontium carbonate fine powder which comprises: a reaction step of reacting strontium hydroxide and carbon dioxide in the presence of a dicarboxylic acid containing one or more hydroxyl groups in the molecule or an anhydride thereof to produce strontium carbonate particles; and an aging step of heating and aging the strontium carbonate particles obtained in the above reaction step in the range of 75 to 115°C.