Name | Cationic Red X-GRL |
Synonyms | Basic red 46 Basic Red GRL C.I.Basic Red 46 C.I. Basic Red 46 Cationic Red X-GRL 3(or5)-[[4-[benzylmethylamino]phenyl]azo]-1,2(or1,4)-dimethyl-1H-1,2,4-triazolium bromide 5-[(E)-{4-[benzyl(methyl)amino]phenyl}diazenyl]-1,4-dimethyl-4,5-dihydro-1H-1,2,4-triazol-1-ium bromide |
CAS | 12221-69-1 |
InChI | InChI=1/C18H22N6.BrH/c1-22(13-15-7-5-4-6-8-15)17-11-9-16(10-12-17)20-21-18-23(2)14-19-24(18)3;/h4-12,14,18H,13H2,1-3H3;1H/b21-20+ |
Molecular Formula | C18H21BrN6 |
Molar Mass | 401.3 |
Boling Point | 470.8°C at 760 mmHg |
Flash Point | 238.5°C |
Vapor Presure | 4.93E-09mmHg at 25°C |
Storage Condition | 2-8℃ |
Physical and Chemical Properties | Chemical properties dark red powder. Soluble in water. When dyeing at high temperature (120 ℃), the color light is stable, the color light changes slightly when encountering copper ions, the color light changes slightly when encountering chromium ions, and the color light does not change when encountering iron ions. Sun fastness grade 6-7. Compatibility value k = 3.5. |
Use | Uses cationic red X-GRL is mainly used for acrylic dyeing, can be dyed acrylic fiber, fiber and acrylic wool, can also be used for modified polyester, nitrile and nitrile blended fabric dyeing. Often with the cationic dark yellow 2RL, cationic blue X-GRL fight a variety of medium to deep color, levelness and dyeing fastness are good. It can also be combined with cationic yellow X-5GL, cationic blue X-GRL or cationic blue X-GRRL to form the three primary colors. It can also be used for direct printing. |
Alizarin Red 46, also known as Sodium 2-amino-3-[(4-amino-2-nitrophenyl)methylamino]propanoate, is an organic synthetic dye belonging to the class of azo dyes. It is categorized as a basic dye, meaning it is water-soluble and exhibits good affinity towards water.
Alizarin Red 46 is commonly used as a dye in industries such as textiles, leather, paper, paints, candles, and adhesives. It can form hydrogen bonds or ionic bonds with fiber materials, allowing the dye molecules to bind with the fibers and produce vibrant color effects on different substrates.
Known for its intense red to orange-red shade, Alizarin Red 46 offers excellent dyeing properties and stability. It can be applied to dye cotton fabrics, silk, wool, and nylon, and provides good colorfastness when used under neutral or alkaline conditions.
However, despite its numerous advantages, Alizarin Red 46 has some drawbacks. For example, it is prone to fading under light exposure, which may result in the dye losing its vibrancy or becoming dull. Additionally, due to its relatively large dye particle size, it may cause uneven dyeing or color migration issues.
In summary, Alizarin Red 46 is a commonly used basic dye, renowned for its vibrant color and good dyeing properties. It is suitable for various fiber materials, providing a durable colorfastness.
Production method
Using 5-amino -3-carboxyl -1,2, 4-triazole and N-methyl-N-benzylaniline as the main raw materials, the former is first diazotized with sodium nitrite and sulfuric acid at low temperature, then coupled with N-methyl-N-benzylaniline, after decarboxylation, methylation with dimethyl sulfate, salt, filtration, and drying to obtain the finished product..
The recently developed new process uses 3-amino -1,2,4-triazole and N-methyl-N-benzylaniline as raw materials. First, the two are nitrosated and condensed in sulfuric acid medium, and then methylated with dimethyl sulfate. After salt formation, filtration and drying to obtain the finished product..
60%-70% sulfuric acid, 3-amino -1,2,4-triazole and N-methyl-N-benzylaniline were added to the condensation kettle, the temperature was reduced to 15-20 ℃, sodium nitrite solution was added dropwise within 2 hours, stirring was continued at 15-20 ℃ for 4 hours after adding, then diluted with water, and the dye matrix was filtered.
Add water and dye matrix filter cake in methylation kettle, stir well, adjust pH value to 6-7 with dilute alkali solution, add magnesium oxide, slowly add dimethyl sulfate dropwise within 4 hours at 5-20 ℃, add heat preservation for 2 hours, add water to dilute, heat rise to 90 ℃, add activated carbon, and filter at 50 ℃. Add zinc chloride and salt to the filtrate for salting out, filter and dry to obtain the finished product.