TransparentredYJO-1
sudan red B
CAS: 3176-79-2
Molecular Formula: C24H20N4O
TransparentredYJO-1 - Names and Identifiers
| Name | sudan red B |
| Synonyms | Sudan B sudan red B solvent red 25 Solvent Red 25 C.I.Solventred25 Einecs 221-647-7 TransparentredYJO-1 1-[4-(3-Methylphenylazo)-3-methylphenylazo]naphthalene-2-ol 1-[[3-methyl-4-[(3-methylphenyl)azo]phenyl]azo]-2-naphthaleno 1-({3-methyl-4-[(E)-(3-methylphenyl)diazenyl]phenyl}hydrazono)naphthalen-2(1H)-one (1E)-1-({3-methyl-4-[(E)-(3-methylphenyl)diazenyl]phenyl}hydrazono)naphthalen-2(1H)-one |
| CAS | 3176-79-2 |
| EINECS | 221-647-7 |
| InChI | InChI=1/C24H20N4O/c1-16-6-5-8-19(14-16)25-27-22-12-11-20(15-17(22)2)26-28-24-21-9-4-3-7-18(21)10-13-23(24)29/h3-15,26H,1-2H3/b27-25+,28-24+ |
TransparentredYJO-1 - Physico-chemical Properties
| Molecular Formula | C24H20N4O |
| Molar Mass | 380.44 |
| Density | 1.19±0.1 g/cm3(Predicted) |
| Melting Point | 173-175°C(lit.) |
| Boling Point | 618.8±55.0 °C(Predicted) |
| Flash Point | 306°C |
| Solubility | Acetonitrile (Slightly), Dichloromethane (Slightly), DMSO (Slightly) |
| Vapor Presure | 1.5E-13mmHg at 25°C |
| Appearance | Solid |
| Color | Very Dark Red |
| pKa | 13.45±0.50(Predicted) |
| Storage Condition | Refrigerator |
| Refractive Index | 1.644 |
| MDL | MFCD00021456 |
| Physical and Chemical Properties | Red powder. Insoluble in water, soluble in ethanol, acetone and other organic solvents. Resistance to 5% hydrochloric acid and sodium carbonate. In concentrated sulfuric acid in blue green, diluted to produce red precipitation; In 10% sulfuric acid does not dissolve; In concentrated sodium hydroxide solution does not dissolve. |
TransparentredYJO-1 - Risk and Safety
| WGK Germany | 3 |
TransparentredYJO-1 - Reference Information
| color index | 26110 |
| introduction | solvent red 25, also known as Sudan red B, belongs to an azo dye. With the development of science and technology, more and more dyes are applied to various fields, and azo dyes are one of them. According to the number of azo groups, azo dyes can be divided into monoazo dyes, diazo dyes and polyazo dyes. |
| use | solvent red 25, also known as Sudan red B, belongs to an azo dye. It can be used in direct dyes, acid dyes, reactive dyes, metal complex dyes, disperse dyes, cationic dyes and polycondensation dyes and other synthetic dyes. It is used for dyeing and printing of a variety of natural and synthetic fibers, as well as fur, plastics, Coloring of rubber, ceramic products, oils, etc. transparent red S-130 is mainly used for coloring various plastics, such as polyvinyl chloride, polystyrene, ABS, acetate fiber, etc. It is also used for coloring paint and ballpoint pen ink. |
| detection method | currently, except Sudan red in food has a national standard detection method, there is no corresponding detection method for other azo dyes in the food field. The detection methods of azo dyes in textiles and other industrial products include thin layer chromatography, liquid chromatography, gas chromatography-mass spectrometry, gas chromatography, etc. Thin layer chromatography can only be qualitative but not accurate and quantitative; gas chromatography-mass spectrometry The anti-interference ability of samples with complex matrix in some foods is relatively poor, and sometimes it cannot be accurate qualitative and quantitative; liquid chromatography cannot completely eliminate the generation of false positives. Zhu Chengjing and others used high performance liquid chromatography tandem mass spectrometry to detect Sudan B in black cereal foods. The method is qualitative and quantitative accurate, which is conducive to strengthening the supervision of the food industry and ensuring the quality of black cereal foods. |
| Production method | Using m-toluidine and 2-naphthol as raw materials, first diazotides 1 molecule of m-toluidine, couples with another molecule m-toluidine, and then diazotides the coupling product, and couples with 2-naphthol to obtain the product. The finished product is filtered, dried and crushed.. |
Last Update：2024-04-09 21:32:05
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Product Name: Sudan Red B Visit Supplier Webpage Request for quotation
CAS: 3176-79-2
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 3176-79-2
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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