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| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| 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: | C23H20N5NaO6S2 |
| MW: | 549.55457 |
| EINECS: | 228-810-1 |
| Product Categories: | Organics;A;Stains and Dyes;Stains&Dyes, A to |
| Mol File: | 6359-85-9.mol |
| 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 |
| 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 |
| 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. | |||||||||||||||||||||||||||||||||
| Acid Yellow 25 is a stain/dye. Dyes and metabolites. | ||||||||||||||||||||||||||||||||||
| Preparation | 5-Amino-2-methyl-N-phenylbenzenesulfonamide?diazo, and 4-(3-Methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid coupling. | |||||||||||||||||||||||||||||||||
| 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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| Raw materials | 5-pyrrazolone |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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