526-99-8O=C(O)C(O)C(O)C(O)C(O)C(=O)ODSLZVSRJTYRBFB-UHFFFAOYSA-NSee also: Galactaric acid (annotation moved to).
526-99-8CHEMBL1616278安全情報は参考情報です。供給元の安全データシート(SDS)、適用法令、専門家による評価に代わるものではありません。
解説粘液酸,無色のプリズム状結晶.融点213~214 ℃,分解点225 ℃.光学不活性.冷水に難溶なのでガラクトースの定性,定量に利用される.エタノールに不溶.水とともに煮沸すると可溶性のDL-γ-ラクトンC6H8O7となり,それを還元するとDL-ガラクトン酸を与える.フェーリング液を還元しないが,銀鏡反応を示す.LD50 8000 mg/kg(マウス,経口).森北出版「化学辞典(第2版)
説明Mucic acid,C6H10O8 or HOOC-(CHOH)4-COOH, (also known as galactaric or meso - galactaric acid) is an aldaric acid obtained by nitric acid oxidation of galactose or galactose - containing compounds like lactose, dulcite, quercite, and most varieties of gum. It forms a crystalline powder, which melts at 230°C. It is insoluble in alcohol, and nearly insoluble in cold water. Due to the symmetry in the molecule, it is optically inactive even though it has chiral carbon atoms (i.e., it is a meso compound). When heated with pyridine to 140°C, it is converted into allommic acid. When digested with fuming hydrochloric acid for some time it is converted into a furfural dicarboxylic acid while on heating with barium sulfide it is transformed into athiophene carboxylic acid. The ammonium salt yields on dry distillation carbon dioxide, ammonia, pyrrol and other substances. The acid when fused with caustic alkalis yields oxalic acid. With potassium bisulfate mucic acid forms 3-hydroxy-2-pyrone by dehydration and decarboxylation.
使用Mucic acid can be used to replace tartaric acid in self-rising flour or fizzies.
読み込み中…
化学的特性white to light beige fine crystalline powder
定義本品は、次の化学式で表されるヒドロキシカルボン酸である。
定義ChEBI: A hexaric acid resulting from formal oxidative ring cleavage of galactose.