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Merck
CN

27130

Sigma-Aldrich

铬变素 2B

for microscopy

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别名:
对硝基苯偶氮变色酸 二钠盐, 酸性红 176
经验公式(希尔记法):
C16H9N3Na2O10S2
CAS号:
分子量:
513.37
颜色索引号:
16575
Beilstein:
4109733
EC 号:
MDL编号:
UNSPSC代码:
12171500
PubChem化学物质编号:
NACRES:
MA.02

等级

for microscopy

质量水平

形式

powder or crystals

mp

300 °C

溶解性

water: 10 mg/mL

ε (消光系数)

≥500 at 509-519 nm in water

应用

diagnostic assay manufacturing
hematology
histology

储存温度

room temp

SMILES字符串

[Na+].[Na+].Oc1cc(cc2cc(c(\N=N\c3ccc(cc3)[N+]([O-])=O)c(O)c12)S([O-])(=O)=O)S([O-])(=O)=O

InChI

1S/C16H11N3O10S2.2Na/c20-12-7-11(30(24,25)26)5-8-6-13(31(27,28)29)15(16(21)14(8)12)18-17-9-1-3-10(4-2-9)19(22)23;;/h1-7,20-21H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b18-17+;;

InChI key

AXUUHWJXDWBCSG-QIKYXUGXSA-L

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应用

Chromotrope 2B along with Chromotrope 2R, was used to give a highly colored radical anion, during the spectrophotometric determination of cephalosporins (cephadroxil (I), cephalexin (II) and cephradine (III)) in pharmaceutical products. It may be immobilized on AG 1-X8 ion exchange resin, used in flame atomic absorption spectrometry and inductively coupled plasma mass spectrometry (ICP-MS), done for the on-line preconcentration and determination of aluminium.

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves


分析证书(COA)

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On-line preconcentration of aluminium with immobilized Chromotrope 2B for the determination by flame atomic absorption spectrometry and inductively coupled plasma mass spectrometry.
Martin-esteban A
Analytica Chimica Acta, 304 (1), 121-126 (1995)
Spectrophotometric assay of cephalosporins in pharmaceutical products, using chromotrope 2B and chromotrope 2R.
Issa YM and Amin AS
Microchimica Acta, 124 (3-4), 203-209 (1996)

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