Merck
  • 102838
All Photos(1)

1.02838

Millipore

L-半胱氨酸

for biochemistry

Synonym(s):
L-半胱氨酸
Empirical Formula (Hill Notation):
C3H7NO2S
CAS Number:
Molecular Weight:
121.16
MDL编号:
EC索引号:
200-158-2

质量水平

形式

solid

自燃温度

420 °C

效能

1890 mg/kg LD50, oral (Rat)

pH值(酸碱度)

4.5-5.5 (20 °C, 100 g/L in H2O)

mp

220-228 °C

溶解性

280 g/L

堆积密度

300 kg/m3

储存温度

2-30°C

InChI

1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)

InChI key

XUJNEKJLAYXESH-UHFFFAOYSA-N

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L-半胱氨酸

form

solid

form

solid

form

crystalline powder

form

-

mp

220-228 °C

mp

220-228 °C

mp

240 °C (dec.) (lit.)

mp

240 °C (dec.) (lit.)

solubility

280 g/L

solubility

280 g/L

solubility

H2O: 25 mg/mL

solubility

-

storage temp.

2-30°C

storage temp.

2-30°C

storage temp.

-

storage temp.

2-8°C

Quality Level

100

Quality Level

-

Quality Level

200

Quality Level

300

autoignition temp.

420 °C

autoignition temp.

420 °C

autoignition temp.

-

autoignition temp.

-

分析说明

含量测定(高氯酸滴定,以干燥物质计算): ≥ 99.0
鉴别(红外光谱):通过测试
外观:无色至白色针状晶体
溶液外观(100 g/l,盐 酸  2 mol/l):无色透明
比旋度(α 20/D,80 g/l,1 mol/l盐酸,以干燥品计):+8.3 - +9.5
pH(25 g/l;不含CO₂的水):4.5 - 5.5
氯化物(Cl): ≤ 0.04 %
硫酸盐(SO₄): ≤ 0.03 %
重金属(以铅计): ≤ 0.001 %
As(砷): ≤ 0.0001 %
Ca(钙): ≤ 0.001 %
Co(钴): ≤ 0.0005 %
Fe(铁): ≤ 0.0010 %
K(钾): ≤ 0.0005 %
Mg(镁): ≤ 0.0005 %
Na(钠): ≤ 0.01 %
NH₄(铵): ≤ 0.02 %
Zn(锌): ≤ 0.0005 %
外来氨基酸: ≤ 0.5 %
其他茚三酮阳性物质: ≤ 0.1 %
干燥失重(105 °C;3 h): ≤ 0.5 %

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(F)

Not applicable

闪点(C)

Not applicable

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