性状:无臭,稍苦酸味。易溶于甲酸,溶于水,不溶于乙醇和乙醚。 水中溶解度:169.9 g/l (20 C) [a]20/D: 9.9° (c=11, 6 N HCl)
备注: 以上描述,仅作参考,并不表示您收到的产品,与此项描述完全相符,产品的出厂标准,请参见质量标准。
质量标准:
99%:
外观Appearance 白色结晶或结晶粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥99.0% (TLC)
水溶解试验Solubility in Water 溶液透明
比旋光度Specific rotation [a]20/D +9.0 ~ +10.3 °(c=11, 6 N HCl)
重金属Heavy metals (as Pb) <10 ppm
硫酸盐灰分Sulfated ash <0.1 %
其它氨基酸Other amino acids <0.5 % (TLC)
干燥损失Loss on drying ≤2.0 %
SO4 < 200 ppm
NH4 < 100 ppm
Fe < 10 ppm
pH 3 - 5 (2.5% 溶液,25°C)
品级Grade 非动物源,EP, JP, USP ;用于细胞培养,98.5 to 101.0%
(from non-animal source, EP, JP, USP, for cell culture, 98.5 to 101.0%)
来源origin non-animal source
外观appearance white crystalline powder
红外鉴别试验identification by ir compares to reference standard
氯chloride 16.66 - 17.08 %
铵ammonium ≤ 0.02%
硫酸盐sulfate ≤ 0.020%
铁iron ≤ 10 ppm
重金属heavy metals ≤ 10 ppm
砷arsenic ≤ 1 ppm
灼烧残渣residue on ignition ≤ 0.10%
残留溶剂residual solvents meets the requirements
茚三酮阳性物质ninhydrin-positive substances (other amino acids) conforms
含量assay (dry basis) 98.5 to 101.0%
内毒素endotoxin assay ≤ 1 eu/mg
细胞培养测试cell culture test pass
品级Grade 超纯级, ≥99.5% (AT) (Ultra pure,≥99.5% (AT))
外观Appearance 白色粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity((AT) ≥99.5%
比旋光度Specific rotation [α]20/D +9.5±0.5°, c = 5% in 5 M HCl
pH 3.0-4.0 (25 °C, 0.5 M in H2O)
灼烧残渣Residue on ignition(as SO4) ≤0.05%
干燥损失loss on drying, 20 °C (HV) ≤0.05%
水溶性solubility H2O: soluble0.5 M at 20 °C, clear, colorless
硫酸根sulfate (SO42-): ≤100 ppm
Al: ≤5 ppm
As: ≤0.1 ppm
Ba: ≤5 ppm
Bi: ≤5 ppm
Ca: ≤10 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
NH4+: ≤500 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
λ 0.5 M in H2O
UV absorption λ: 260 nm A: ≤0.05
λ: 280 nm A: ≤0.05
贮存:
用途:组胺(histamine)的前体物质,依靠组氨酸脱羧酶(histidine decarboxylase)的催化
联合国编号1789
Risk:
Safety : S24/25 -
Hazard :