产品介绍
Product Description
General description
羟基萘酚蓝二钠盐是一种化合物，属于偶氮染料类，常用作 pH 指示剂。它以蓝色小晶体形式存在。 Hydroxy naphthol blue is suitable for the quantification of metal leaching in metal affinity chromatography. 在pH 12-13的范围内：在钙离子存在下，它由蓝色变为粉红色，在乙二胺四乙酸二钠（EDTA）存在下由蓝色变为深蓝色。
技术参数
Specifications
| grade | ACS reagent |
| Quality Level | 200 |
| form | powder, crystals or granules |
| technique(s) | titration: suitable |
| pH | 7.9 |
| mp | 274 °C |
| solubility | water: soluble |
| density | 2.130 g/cm3 |
| λmax | 650 nm |
| suitability | passes test for determination of calcium |
| application(s) | diagnostic assay manufacturing hematology histology |
| storage temp. | room temp |
| SMILES string | Oc1cc(c2ccccc2c1N=Nc3c(O)c(cc4cc(ccc34)S(=O)(=O)O[Na])S(=O)(=O)O[Na])S(O)(=O)=O |
| InChI | 1S/C20H14N2O11S3.2Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2 |
| InChI key | WPDDXLRAJOPBIR-UHFFFAOYSA-L |
