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红霉素本品为白色或微黄色的结晶或粉末,微有引湿性。在水中极微溶解,饱和水溶液呈中性或弱硷性。可溶于乙醇、丙酮、乙醚、氯仿等有机溶媒。本身为硷,易与无机或有机酸类生成盐。干燥的红霉素硷或盐类很稳定。于干燥的凉暗处贮存时红霉素硷的有效期为4年。红霉素水溶液的稳定性也较高,比青霉素稳定。pH、温度等对其稳定性影响很大。在pH
Erythromycin This product is white or yellowish crystals or powder, slightly hygroscopic. Very slightly soluble in water, saturated aqueous solution was neutral or weak alkaline. Soluble in ethanol, acetone, ether, chloroform and other organic solvents. Itself is alkaline, easy to generate salts with inorganic or organic acids. Dry erythromycin alkaline or salt is very stable. Erythromycin alkaloids are stored for 4 years when stored in dry, cool, dark places. Erythromycin aqueous solution is also more stable than penicillin. pH, temperature and other effects on its stability. At pH