C.I. Pigment Yellow 181
N-[4-(aminocarbonyl)phenyl]-4-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzamide
CAS: 74441-05-7
Molecular Formula: C25H21N7O5
C.I. Pigment Yellow 181 - Names and Identifiers
C.I. Pigment Yellow 181 - Physico-chemical Properties
| Molecular Formula | C25H21N7O5 |
| Molar Mass | 499.48 |
| Density | 1.50±0.1 g/cm3(Predicted) |
| Boling Point | 628.3±55.0 °C(Predicted) |
| Flash Point | 333.8°C |
| Water Solubility | 106.1μg/L at 23℃ |
| Solubility | 52.7μg/L in organic solvents at 20 ℃ |
| Vapor Presure | 1.07E-15mmHg at 25°C |
| pKa | 8.15±0.59(Predicted) |
| Refractive Index | 1.728 |
| Physical and Chemical Properties | hue or color: yellow density/(g/cm3):1.48 average particle size/μm:560 specific surface area/(m2/g):27(H3R) diffraction curve:  reflex curve:  |
| Use | This pigment is another benzimidazolone red and yellow variety with structure put on the market in recent years, with a hue angle of 66.5 degrees (1/3S.D.,HDPE), used for Polyolefin coloring, no size deformation, with excellent thermal stability and light fastness, heat resistance up to 300 ℃, light fastness to grade 7-8. Widely used in plastic coloring, especially for high temperature processing of resin, such as PS,ABS,PE, etc.; Also used for viscose fiber and paint coloring. |
C.I. Pigment Yellow 181 - Reference Information
| LogP | -0.3 at 23℃ |
| EPA chemical substance information | information is provided by: ofmpeb.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
