CAS Number860-22-0
SynonymsDisodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)indoline-5-sulfonate; Indigo-5,5'-disulfonic acid disodium salt; FD and C blue 2; indigotini; Indigo Carmine; Indigo-5,5′-disulfonic acid disodium salt; Disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)-5-indolinesulfonate; murabba; E132; Greell S; Indigotine; Indigotindisulfonate Sodium; Disodium 5,5'-indigotin disulfonate; l-blau2; Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonate; Food Blue No. 2; FD & C blue no. 2; 1311blue; EINECS 212-728-8; acidbluew; E 132; trans-indigo carmine; indigo carmin; MFCD00005723
Molecular FormulaC16H8N2Na2O8S2
Molecular Weight466.35
Purity98.00%
Density1.01 g/mL at 20 °C
Melting Point>340 °C
Appearancepurple powder
| Chemical & Physical Properties | |
|---|---|
| CAS Number | 860-22-0 |
| Catalog No. | 2A-9025427 |
| Chinese Name | 酸性蓝 74 |
| Synonyms | Disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)indoline-5-sulfonate; Indigo-5,5'-disulfonic acid disodium salt; FD and C blue 2; indigotini; Indigo Carmine; Indigo-5,5′-disulfonic acid disodium salt; Disodium (2E)-3-oxo-2-(3-oxo-5-sulfonato-1,3-dihydro-2H-indol-2-ylidene)-5-indolinesulfonate; murabba; E132; Greell S; Indigotine; Indigotindisulfonate Sodium; Disodium 5,5'-indigotin disulfonate; l-blau2; Sodium 3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonate; Food Blue No. 2; FD & C blue no. 2; 1311blue; EINECS 212-728-8; acidbluew; E 132; trans-indigo carmine; indigo carmin; MFCD00005723 |
| Molecular Formula | C16H8N2Na2O8S2 |
| Molecular Weight | 466.35 |
| Purity | 98.00 |
| Density | 1.01 g/mL at 20 °C |
| Melting Point | >340 °C |
| Appearance | purple powder |
| Water Solubility | 1 g/100 mL (25 ºC) |
| Storage Condition | Keep container sealed and store in a cool, dry pla |
| Application | Indigo carmine is a highly efficient, chemiluminescent indicator for the determination of ozone (CL). |
| HTC | 32041200 |
| MDL Number | MFCD00005723 |
| SMILES | [Na+].[Na+].[S](=O)(=O)([O-])c1cc2c(cc1)N\C(=C3\Nc4c(cc(cc4)[S](=O)(=O)[O-])C\3=O)\C2=O |
| InChI | 1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+;; |
| InChI Key | KHLVKKOJDHCJMG-QDBORUFSSA-L |
| NACRES Code | NB.21 |
| UNSPSC | 12171506 |
| MSDS | msds/25427_1_860_22_0.pdf |
| Bioactivity | Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL)[1]. Related Catalog Research Areas >> Others Signaling Pathways >> Others >> Others In Vitro Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction[1]. References [1]. K Takeuchi, et al. Quantitative Determination of Aqueous-Phase Ozone by Chemiluminescence Using indigo-5,5'-disulfonate. Anal Chem. 1989 Mar 15;61(6):619-23. Chemical & Physical Properties Density 1.01 g/mL at 20 °C Melting Point >300°C Molecular Formula C16H8N2Na2O8S2 Molecular Weight 466.353 Exact Mass 465.951752 PSA 189.36000 LogP 3.06060 Index of Refraction n20/D 1.335 InChIKey JFVXEJADITYJHK-UHFFFAOYSA-L SMILES O=C1C(c2[nH]c3ccc(S(=O)(=O)[O-])cc3c2O)=Nc2ccc(S(=O)(=O)[O-])cc21.[Na+].[Na+] Water Solubility 1 g/100 mL (25 ºC) |
| Use of | Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL)[1]. Properties Articles40 Name Acid Blue 74 Synonym More Synonyms Indigo carmine Biological Activity Description Indigo carmine is an efficient reagent for the determination of ozone by chemlluminescence (CL)[1]. Related Catalog Research Areas >> Others Signaling Pathways >> Others >> Others In Vitro Indigo carmine in a 0.2% aqueous solution is blue at pH 11.4 and yellow at 13.0. Indigo carmine is also a redox indicator, turning yellow upon reduction[1]. References [1]. K Takeuchi, et al. Quantitative Determination of Aqueous-Phase Ozone by Chemiluminescence Using indigo-5,5'-disulfonate. Anal Chem. 1989 Mar 15;61(6):619-23. Chemical & Physical Properties Molecular Formula C16H8N2Na2O8S2 Exact Mass 465.951752 PSA 189.36000 LogP 3.06060 InChIKey JFVXEJADITYJHK-UHFFFAOYSA-L |
| Tax Rebate | 13.0% |
| Supervision | None. MFN tariff: 6.5%. Ordinary tariff: 20.0% |
| Transport Info | Product name: Summary 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
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