Sodium

Sodium carbonate chemical formula: Na2CO3 Molecular weight: 106 Properties: White powder or granules. Odorless. There alkaline taste. Hygroscopic. Lu home air gradually absorbed 1mol / L of water (about 15%). It began to lose carbon dioxide at 400 ℃. Case acid decomposition and effervescent. Dissolved in water (at room temperature 3.5 parts, 35 ℃ 2.2 parts) and glycerin, insoluble in ethanol. Solution is strongly alkaline, pH 11.6. The relative density of 2.53. A melting point of 851 ℃. Median lethal dose (30) (mouse, intraperitoneal) 116.6mg / kg. Irritation. Storage: sealed dry preservation. Chinese alias: soda, block alkali, soda (Soda), mouth base (Historically, usually after Zhangjiakou and gubeikou transit country, so there are "port base," said), the base surface (food base), no crystal water alkali industry name for the light, there is a crystal water industry name for the heavy base.