“Acid orange 5”的意思、由来-开放百科全书

词条

Acid orange 5

释义

References

{{Chembox
| ImageFile = Acid orange 5.svg
| ImageSize = 200px
| IUPACName = Sodium 4-[(E)-(4-anilinophenyl)diazenyl]benzenesulfonate
| OtherNames = Fast yellow; Tropaeolin OO
|Section1={{Chembox Identifiers
| CASNo = 554-73-4
| PubChem = 11133
| ChemSpiderID = 10660
| SMILES = c1ccc(cc1)Nc2ccc(cc2)/N=N/c3ccc(cc3)S(=O)(=O)[O-].[Na+]
| InChI = 1/C18H15N3O3S.Na/c22-25(23,24)18-12-10-17(11-13-18)21-20-16-8-6-15(7-9-16)19-14-4-2-1-3-5-14;/h1-13,19H,(H,22,23,24);/q;+1/p-1/b21-20+;
| InChIKey = MLVYOYVMOZFHIU-LGLICYIRBD
| StdInChI = 1S/C18H15N3O3S.Na/c22-25(23,24)18-12-10-17(11-13-18)21-20-16-8-6-15(7-9-16)19-14-4-2-1-3-5-14;/h1-13,19H,(H,22,23,24);/q;+1/p-1/b21-20+;
| StdInChIKey = MLVYOYVMOZFHIU-ANVLNOONSA-M
|Section2={{Chembox Properties
| C=18 | H=14 | N=3 | Na=1 | O=3 | S=1
| MolarMass = 375.38 g/mol
| Appearance =
| Density =
| MeltingPt =
| BoilingPt =
| Solubility =
|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt =
}}{{pH_indicator_template|indicator_name=Tropaeolin OO|low_pH=1.4|high_pH=3.2|low_pH_color=red|low_pH_text=white|high_pH_color=#ffcc00}}

Acid orange 5 is a compound with formula Na(C₆H₅NHC₆H₄N=NC₆H₄SO₃). It is an azo dye.

It is also used as a pH indicator; it is red in pH under 1.4, orange-yellow in pH over 3.2.^[1]

References

1. ^Beilstein 16 II 171.

4 : Azo dyes|PH indicators|Benzenesulfonates|Organic sodium salts

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