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首頁 > 供應產品 > L-組氨酸鹽酸鹽
L-組氨酸鹽酸鹽
單價 面議對比
詢價 暫無
發貨 湖北武漢市付款后3天內
過期 長期有效
更新 2012-03-21 17:47
 
詳細信息
L-組氨酸鹽酸鹽
英文名稱:L-Histidine Monohydrochloride
分 子 式: C6H9N3O2·HCL·H2O
外  觀:本品為白色結晶或結晶性粉末。
質量指標
項 目   指 標
含量    99.0% ~ 101.0%
比旋光度    +8.9°~ +9.5°
透光率 ≥98%
氯化物 16.66%~17.08%
銨含量(NH4)     ≤0.02%
硫酸鹽(SO4) ≤0.020%
(Fe) ≤10ppm
重金屬 (Pb)     ≤10ppm
砷含量 (As2O3) ≤1ppm
其它氨基酸 色層不能檢出
干燥失重    ≤0.20%
灼燒殘渣    ≤0.10%
PH值    3.5~4.5
    裝:內襯兩層塑料袋,外裝為紙板桶,每桶凈重25 KG。
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