C5H11NO2S
DL-蛋氨酸是化学物质，分子式是C5H11NO2S;CH3SCH2CH2CH(NH2)COOH。
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中文别名 |
中文别名 DL-甲硫氨酸; 2-氨基-4-甲硫基丁酸; 甲硫氨基酸; 甲硫氨酸; 甲硫基丁氨酸; DL-2-氨基-4-甲硫基丁酸; 混旋蛋氨酸 |
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英文名称 |
DL-Methionine |
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英文别名 |
DL-2-Amino-4-(methylthio)butyric acid; DL-Methoionine; 3-Methyl Amino Propionitrile; (+/-)-2-Amino-4-(methylthio)butyric acid~H-DL-Met-OH |
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分子式(Formula) |
C5H11NO2S;CH3SCH2CH2CH(NH2)COOH |
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分子量(Molecular Weight) |
149.21 |
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CAS No. |
59-51-8 |
1、外观:白色薄片状结晶或粉末;
2、溶液澄清度:无色澄清;
3、含量(干基):99.4%;
4、PH值:5.9(1%水溶液);
5、重金属(以Pb计):≤0.001%;
6、加热减量:≤0.07%;
7、灼烧残渣:≤0.06%;
8、氯化物(以Cl计):≤0.02%;
9、硫酸钴(以SO4计):≤0.02%;
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外观Appearance |
白色至米黄色粉末 |
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红外光谱鉴别Infrared spectrometry |
符合 |
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纯度Purity |
≥99% (NT) (TLC) |
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干燥损失Loss on drying |
<0.2 % |
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重金属Heavy metals (as Pb) |
<10 ppm |
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灼烧残渣Res. after ignition |
<0.1 % |
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pH |
5.6 ~ 6.1 (1% soln.25°C) |
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透光度Transmittance |
>95 % (c=10, 2 N HCl, 430 nm) 1 cm cell |
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Cl |
< 200 ppm |
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SO4 |
< 200 ppm |
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NH4 |
< 200 ppm |
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Fe |
< 10 ppm |
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其它氨基酸Other amino acids |
<0.2 % (TLC) |
≥98.5%, FCC:
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外观Appearance |
White Crystal to Powder |
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红外光谱鉴别Infrared spectrometry |
Conforms to Structure |
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纯度Purity (Titration by HCL04) |
98.50 - 101.50 % |
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水分Water (by Karl Fischer) |
≤0.5 % |
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灼烧残渣Residue on ignition (Ash) |
≤0.1 % |
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砷Arsenic (As) |
≤3 ppm |
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镉Cadmium (Cd) |
≤1 ppm |
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汞Mercury (Hg) |
≤1 ppm |
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铅Lead (Pb) |
≤10 ppm |
