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| | Acid yellow 25 (c.i. 18835) Basic information |
| Product Name: | Acid yellow 25 (c.i. 18835) | | Synonyms: | sodium,4-[3-methyl-4-[[4-methyl-3-(phenylsulfamoyl)phenyl]diazenyl]-5-oxo-4H-pyrazol-1-yl]benzenesulfonate;sodium 4-(3-methyl-4-(4-methyl-3-(phenylaminosulphonyl)phenylazo)-5-hydroxypyrazol-1-yl)benzenesulphonate;AcidYellowER;C.I.AcidYellow25;1H-Pyrazole,5-oxo-4,5-dihydro-3-methyl-4-[[3-[(phenylamino)sulfonyl]-4-methylphenyl]azo]-1-(4-sulfophenyl)-,sodiumsalt;Benzenesulfonic acid, 4-4,5-dihydro-3-methyl-4-4-methyl-3-(phenylamino)sulfonylphenylazo-5-oxo-1H-pyrazol-1-yl-, monosodium salt;Acid Fast Yellow ER;Covanyl Yellow RN | | CAS: | 6359-85-9 | | MF: | C23H21N5O6S2.Na | | MW: | 550.57 | | EINECS: | 228-810-1 | | Product Categories: | Organics;A;Stains and Dyes;Stains&Dyes, A to | | Mol File: | 6359-85-9.mol |  |
| | Acid yellow 25 (c.i. 18835) Chemical Properties |
| density | 1.282[at 20℃] | | storage temp. | room temp | | Colour Index | 18835 | | form | powder | | Water Solubility | 73.7g/L at 20℃ | | λmax | 392 nm | | ε(extinction coefficient) | 13200 at 259nm in H2O at 0.03g/L | | Major Application | diagnostic assay manufacturing
hematology
histology | | InChIKey | WYLWMAWLDZBLRN-QREUMGABSA-M | | SMILES | [Na+].C1(S([O-])(=O)=O)=CC=C(N2C(=O)C(/N=N/C3=CC=C(C)C(S(NC4=CC=CC=C4)(=O)=O)=C3)C(C)=N2)C=C1 | | LogP | -0.8 at 23℃ | | CAS DataBase Reference | 6359-85-9 | | EPA Substance Registry System | C.I. Acid Yellow 25 (6359-85-9) |
| WGK Germany | 3 | | TSCA | TSCA listed | | Storage Class | 11 - Combustible Solids |
| | Acid yellow 25 (c.i. 18835) Usage And Synthesis |
| Chemical Properties | Soluble in water. Slightly soluble in ethanol and acetone. Its aqueous solution is yellow, adding sodium hydroxide color does not change; turbid when cold. Yellow in concentrated sulfuric acid, fluorescent yellow precipitate after dilution. | | Uses | Acid Yellow 25 is a stain/dye. Dyes and metabolites. | | Preparation | 5-Amino-2-methyl-N-phenylbenzenesulfonamidediazo, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling. | | Flammability and Explosibility | Not classified | | Properties and Applications | yellow. Yellow powder. Soluble in water yellow, encounter cold becomes muddy. Slightly soluble in ethanol and acetone. Meet strong sulfuric acid is yellow, the generation after diluted fluorescent yellow precipitation. Its water solution meet sodium hydroxide solution without change. Mainly used for wool and polyamide fiber of printing and dyeing, also can be used for leather and electrochemical aluminum shading, occasionally used for paper coating.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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5-6
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4
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2
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3
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1
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3
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3
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AATCC
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6-7
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4
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4
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3-4
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1
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1
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4
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|
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| | Acid yellow 25 (c.i. 18835) Preparation Products And Raw materials |
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