乙二酸; 修酸; 无水草酸; 精制草酸

Oxalic acid is an odorless white solid. Sinks and mixes with water. (USCG, 1999) Oxalic acid is an alpha,omega-dicarboxylic acid that is ethane substituted by carboxyl groups at positions 1 and 2. It has a role as a human metabolite, a plant metabolite and an algal metabolite. It is a conjugate acid of an oxalate(1-) and an oxalate.

络合剂、掩蔽剂、沉淀剂、还原剂。分析中用以检定和测定铍、钙、铬、金、锰、锶、钍等金属离子。显微微晶分析检验钠和其他元素。沉淀钙、镁、钍和稀土元素。校准高锰酸钾和硫酸铈溶液的标准溶液。漂白剂。助染剂。也可用来除去衣服上的铁锈建筑行业在涂刷外墙涂料前、由于墙面碱性较强应先涂刷草酸除碱