Lithol rubine red (CAS# 5281-04-9)
Chemical Property:
| Molecular Formula | C18H14N2O6S.Ca |
| Molar Mass | 430.34 |
| Density | 0.352-1.7[at 20℃] |
| Water Solubility | 8.9mg/L at 25℃ |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | powder to crystal |
| Color | Red to Dark red to Brown |
| Storage Condition | Room Temprature |
| MDL | MFCD00059529 |
| Physical and Chemical Properties | solubility: insoluble in ethanol; Magenta in concentrated sulfuric acid, magenta after dilution; Brown-red precipitate in aqueous solution in case of hydrochloric acid, Brown in case of sodium hydroxide. hue or color: blue Red relative density: 1.42-1.80 Bulk density/(lb/gal):11.8-14.9 melting point/℃:360 average particle size/μm:0.04-0.3 particle shape: rod-like specific surface area/(m2/g):21-105 pH value/(10% slurry):6.0-9.0 oil absorption/(g/100g):20-88 hiding power: translucent diffraction curve:  reflection curve:  Blue red powder, bright color, strong coloring power, insoluble in ethanol, yellow red when dissolved in hot water Color. In the ink flow is good, and has good stability. |
| Use | This variety is suitable for all kinds of printing inks, and the color light conforms to the magenta color specified by the four-color plate. It has high coloring power and good light fastness of grade 4-5 (1/1SD); the addition of toergan acid during synthesis can change the particle size and color light; The color lake in the aqueous alcohol medium due to metal dissociation, the replacement of metal ions, resulting in alkaline ink storage thickening, in order to prevent ink thickening, optional C.I. Pigment Red 184 (mixed-coupled product) alternative; Used in latex paints as well as in plastics (soft PVC,LDPE), used as food Red No. Nearly 50 companies have launched about 265 brands. It is mainly used for the coloring of paints, inks, oil colors and watercolors. It can also be used for the coloring of rubber, plastic wires, electrospray and daily chemical products. |
| Risk Codes | R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. |
| HS Code | 3204170000 |
Introduction
Red 57:1 is an organic pigment that is also known as a common red pigment. The following is an introduction to some of the properties, uses, preparation methods and safety information of red 57:1:- Properties:- The chemical name of red 57:1 is azo dye PR57:1, which belongs to the azo dye family. – It is a vivid red pigment with good pigment transparency and strength. – Its chemical structure makes it resistant to light, heat, and chemicals. – Red 57:1 has good solubility in organic solvents, but low solubility in water. Uses:- Red 57:1 is mainly used as a colorant in the fields of coatings, inks, plastics, fibers and rubber. – It is widely used in printing inks, especially in packaging printing, to provide a vivid red color. – Red 57:1 is also used in the field of art for painting and dyeing fabrics. Method:- The preparation of red 57:1 usually involves the synthesis of azo dye compounds. – The synthesis process involves the selection of appropriate aromatic amines and aromatic thioneones as raw materials, through oxidation, coupling, and other reaction steps to form the red 57:1 pigment. Safety Information:- Red 57:1 is considered relatively safe under general conditions of use. – As a chemical, it still requires proper care and handling. – Avoid inhaling red 57:1 dust or solution and avoid contact with skin and eyes. – When in use, follow the relevant safety handling guidelines and personal protective measures.
