storageapplicationusage检测指标specification白色或淡黄色粉末white crystalline powder≥99.0%not less than 99.0%(w/w)透光率light transmittance干燥失重loss on drying≤0.50%(w/w)(105℃ 2hrs)游离苯甘氨酸含量pg content过滤测试filtration test无可视杂质,过滤时间小于6分钟 no visible impurityfiltration time≤6min contact ...