Abstract: A method for producing antimony trisulfide can inexpensively produce antimony trisulfide that has a relatively low content of lead, arsenic, and crystalline silica (i.e., impurities). The method includes charging a reaction vessel with an antimony trioxide powder and sulfur, and heating the inside of the reaction vessel to react antimony trioxide with sulfur. Since antimony trioxide is obtained by volatilization-oxidation refining, antimony trioxide has a small particle size and a large specific surface area, and exhibits good reactivity, and high-purity antimony trioxide having a low content of impurities (e.g., lead, arsenic, and crystalline silica) is easily available. It is possible to inexpensively produce antimony trisulfide having a low content of impurities by utilizing high-purity antimony trioxide as a raw material.

Abstract: A method for producing antimony trisulfide can inexpensively produce antimony trisulfide that has a relatively low content of lead, arsenic, and crystalline silica (i.e., impurities). The method includes charging a reaction vessel with an antimony trioxide powder and sulfur, and heating the inside of the reaction vessel to react antimony trioxide with sulfur. Since antimony trioxide is obtained by volatilization-oxidation refining, antimony trioxide has a small particle size and a large specific surface area, and exhibits good reactivity, and high-purity antimony trioxide having a low content of impurities (e.g., lead, arsenic, and crystalline silica) is easily available. It is possible to inexpensively produce antimony trisulfide having a low content of impurities by utilizing high-purity antimony trioxide as a raw material.