Pigment Red 185 CAS 51920-12-8
Chemical Property:
| Molecular Formula | C27H24N6O6S |
| Molar Mass | 560.58 |
| Density | 1.3-1.4 |
| Melting Point | 335-345 ºC |
| Water Solubility | 3.4μg/L at 26℃ |
| pKa | 10.63±0.50(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.722 |
| Physical and Chemical Properties | hue or color: brilliant blue and red relative density: 1.45 Bulk density/(lb/gal):11.2-11.6 average particle size/μm:180 particle shape: small flake specific surface area/(m2/g):45;43-47 pH value/(10% slurry):6.5 oil absorption/(g/100g):97 hiding power: transparent diffraction curve:  reflection curve:  |
| Use | The pigment gives a blue-red color with a hue angle of 358.0 degrees (1/3SD,HDPE), is almost completely insoluble in common organic solvents, and is resistant to sterilization. Heat resistance in ink is 220 ℃/10min, suitable for metal decoration and laminated plastic film printing ink, light fastness is 6-7 (1/1SD); Used for plastic coloring, good migration resistance in soft PVC, light fastness grade 6-7 (1/3SD), also used for PE coloring, heat resistance <200 °c, and polypropylene pulp coloring. |
Introduction
Pigment Red 185 is an organic synthetic pigment, also known as bright red pigment G, and its chemical name is diaminaphthalene sulfinate sodium salt. The following is an introduction to the properties, uses, manufacturing methods and safety information of Pigment Red 185:
Quality:
- Pigment Red 185 is a red powder with good dyeing properties and bright colors.
- It has good lightfastness, heat resistance and acid and alkali resistance, and is not easy to fade.
Use:
- Pigment Red 185 is mainly used in the dye industry and in the manufacture of inks.
- It can be used for textile dyeing, pigment printing, coloring of paints and plastic products.
Method:
- The preparation method of pigment red 185 is mainly through the nitrification reaction of naphthol, which reduces nitronaphthalene to diaminophanephthalene, and then reacts with chloric acid to obtain sodium salt of diaminaphthalene sulfinate.
Safety Information:
- Avoid inhalation, ingestion, or contact with skin. In case of accidental contact, rinse immediately with plenty of water and seek medical attention.
- Wear protective gloves, glasses, and a mask during use.
- Avoid contact with strong acids, alkalis and other chemicals.
- Store in a dry, ventilated place, away from fire and flammable materials.
