Permanent violet RL(CAS#6358-30-1)
Chemical Property:
| Molecular Formula | C35H23Cl2N3O2 |
| Molar Mass | 588.48202 |
| Density | 1.53g/cm3 |
| Melting Point | 385℃ (dec.) |
| Appearance | Shape Solid, color Dark Purple to Very Dark Purple |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.787 |
| Physical and Chemical Properties |
hue or color: blue violet relative density: 1.40-1.60 Bulk density/(lb/gal):11.7-13.3 melting point/℃:430-455 average particle size/μm:0.04-0.07 particle shape: Cubic/Rod specific surface area/(m2/g):45-102 pH value/(10% slurry):6.2 hiding power: transparent diffraction curve:  reflectance curve:  blue-violet. Light fastness 7~8, organic solvent fastness 3~5, inorganic solvent fastness 5. |
| Use | Mainly used for paint, ink, rubber and plastic coloring, also used for synthetic fiber liquid coloring The pigment commercial formulations there are 124 kinds of brands. Carbazosin is a blue-Violet variety with a strong, unusually high color intensity for full application, and the specific surface area of Monolite Violet RN is 74 m2/g. Widely used in coating, printing ink, plastic and fabric printing and dyeing and other fields: in the coating color resistance to light paint fastness is good, can be used for air self-drying paint, automotive coating OEM and baking paint, especially for CuPc Toner, to obtain the strong light color of latex paint; For plastic coloring, polyolefin heat-resistant 280 ℃, high coloring power (to reach 1/3SD of HDPE only need pigment concentration of 0.07%); also used for polyester and PE pulp coloring (in |
Permanent violet RL(CAS#6358-30-1)
quality
Permanent violet RL is an organic dye with the chemical name carbamate 2-(6-amino-4-methyl-5-oxotrithio-2,3-cyclohexylpyrrole)[4,5-b]-turmeric pyrosulfur (3-acetate aniline). Permanent violet RL is a dark purple crystalline solid that is poorly soluble in water and soluble in organic solvents such as ethyl acetate and dimethyl sulfoxide.
Permanent violet RL has excellent lightfastness, water resistance, washing resistance and other characteristics under acidic conditions, and is widely used in the preparation of dyes and pigments in the textile industry. It has a good color fastness on the fabric, which can give the fabric a vivid purple color. Permanent violet RL can also be used in the manufacture of dyed liquid crystal displays and pigmented inks. Production method
Permanent violet RL is an organic synthetic dye, and the production method is as follows:
1. Prepare the raw materials and reagents required for the reaction. The synthesis of permanent violet RL typically requires aniline, phenylacetaldehyde, dimethylformamide (or ethyl acetate), as well as some catalysts and solvents.
2. Add aniline and phenylacetaldehyde to the reaction vessel, and then add an appropriate amount of dimethylformamide (or ethyl acetate) as a solvent. These raw materials react at the right temperature and pressure.
3. Add a catalyst, such as copper acetate or phosphorus oxychloride, to the reaction mixture. The role of the catalyst is to accelerate the reaction rate and increase the yield.
4. Control the reaction temperature and time, usually the reaction temperature is in the range of 50-70 degrees Celsius. The reaction time can be determined on a case-by-case basis.
5. At the end of the reaction, separate the permanent violet RL dye from the reaction mixture. This can be done by methods such as filtration, crystallization, or extraction.
6. The permanent violet RL dye is purified and dried to obtain the final product. Purification can be performed using techniques such as solvent crystallization, column chromatography, or recrystallization.
The production of permanent violet RL dyes needs to be performed under controlled conditions to ensure yield and purity. In order to meet environmental and safety requirements, chemical management regulations should be followed and appropriate safety measures should be taken.
