Sodium bicarbonate appears as a white crystalline powder, odorless and slightly salty in taste. Its aqueous solution is weakly alkaline (pH ≈ 8.5). It decomposes slowly in moist air and decomposes into sodium carbonate, CO₂ and water when heated above 50℃.

1. Food industry: baking leavening agent, acidity regulator, food additive
2. Industry: fire extinguishing agent, auxiliary agent for printing and dyeing, leather and water treatment, cleaning and degreasing agent
3. Pharmaceutical: antacid, pharmaceutical excipient, external cleaning agent
4. Feed: feed additive, buffering agent