This standard specifies the requirements, test methods, inspection rules, signs, packaging, transportation and storage of antimony trioxide (commonly known as antimony white). This standard applies to antimony trioxide produced by various processes. This product is mainly used as a flame retardant synergist in the flame retardant of plastic, resin, rubber, paint, textile and other combustibles to improve the flame retardant effect. In addition, it is also widely used in glass enamel, paint, catalyst, metallurgy, chemical industry and other industries.