Alkaline earth metal basic silicate particles having a silicate of an alkaline earth metal on the surfaces of the alkaline earth metal hydroxide particles, and having an SiO
2
/MO (M is an alkaline earth metal) molar ratio as a whole in a range of from 0.01 to 0.90. The particles are useful as a stabilizer for the chlorine-containing polymers.
碱土
金属碱
硅酸盐颗粒,在碱土
金属氢氧化物颗粒表面具有碱土
金属
硅酸盐,并具有 SiO
2
/MO(M 为碱土
金属)的摩尔比整体在 0.01 至 0.90 之间。这些颗粒可用作含
氯聚合物的稳定剂。