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单词 Sodium metasilicate
释义

Sodium metasilicate

中文百科

硅酸钠 Sodium silicate

(重定向自Sodium metasilicate)

硅酸钠(化学式:Na2SiO3),俗称泡花碱,是一种无色、透明的粘稠状固体。

硅酸钠由石英砂与碳酸钠熔合而成;溶于水呈碱性,其透明的浆状溶液称为水玻璃。硅酸钠遇酸分解,析出硅酸的胶状溶液。

装有NaOH的玻璃容器(如试管)不能用玻璃塞塞住,因为NaOH会与玻璃中的SiO2反应生成粘稠状Na2SiO3堵塞试管口。

硅酸钠溶液也不可用玻璃塞,而应用橡胶塞或软木塞。

英语百科

Sodium silicate 硅酸钠

(重定向自Sodium metasilicate)
Expantrol proprietary sodium silicate suspended in about a 6.5-mm-thick layer of red rubber, type 3M FS195, inserted into a metal pipe, then heated, to demonstrate hard char intumescence, strong enough to shut a melting plastic pipe
Palusol-based intumescent plastic pipe device used for commercial firestopping
World War I poster suggesting the use of waterglass to preserve eggs (lower right).
Silicato de sodio.

Sodium silicate is the common name for compounds with the formula Na2(SiO2)nO. A well-known member of this series is sodium metasilicate, Na2SiO3. Also known as waterglass or liquid glass, these materials are available in aqueous solution and in solid form. The pure compositions are colourless or white, but commercial samples are often greenish or blue owing to the presence of iron-containing impurities.

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更新时间:2025/6/20 22:51:49