Serving the life of science and technology civilization.
Serving the life of science and technology civilization.
Serving the life of science and technology civilization.
Serving the life of science and technology civilization.
理念识别系统
Serving the life of science and technology civilization.
Serving the life of science and technology civilization.
Serving the life of science and technology civilization.

碳酸钠(Na₂CO₃)

来源: 本站 作者: 管理员 浏览1942 发布时间 2022/7/28 10:55:27

碳酸钠常温下为白色粉末或颗粒。无气味。是 强碱弱酸盐 。有吸水性。露置空气中逐渐吸收 1mol/L水分(约15%)。遇酸分解并泡腾。溶于水(室温时3.5份,35℃时2.2份)和甘油,微溶于无水乙醇。水溶液呈强碱性,pH11.6。相对密度(25℃)2.53。熔点851℃。半数致死量(30日)(小鼠,腹腔)116.6mg/kg。有刺激性。可由氢氧化钠和碳酸发生化学反应结合而成。溶液呈碱性。碳酸钠在2132K分解。

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