C.I. Pigment Red 4
C.I. Pigment Red 4
CAS: 2814-77-9
Molecular Formula: C16H10ClN3O3
C.I. Pigment Red 4 - Names and Identifiers
| Name | C.I. Pigment Red 4 |
| Synonyms | C.I. 12085 PIGMENT RED 4 Pigment Red 4 PERMANENT RED 2B C.I. Pigment Red 4 Pigment Red 4 (C.I.) 1-(2-Chloro-4-nitrophenylazo)-2-naphthol 1-(2-chloro-4-nitrophenylazo)-2-naphthol 1-((2-chloro-4-nitrophenyl)azo)-2-naphtho 1-((2-chloro-4-nitrophenyl)azo)-2-naphtaleno 1-[(2-chloro-4-nitrophenyl)azo]-2-naphthaleno 1-[(E)-(2-chloro-4-nitrophenyl)diazenyl]naphthalen-2-ol (1Z)-1-[(2-chloro-4-nitrophenyl)hydrazono]naphthalen-2(1H)-one |
| CAS | 2814-77-9 |
| EINECS | 220-562-2 |
| InChI | InChI=1/C16H10ClN3O3/c17-13-9-11(20(22)23)6-7-14(13)18-19-16-12-4-2-1-3-10(12)5-8-15(16)21/h1-9,21H/b19-18+ |
C.I. Pigment Red 4 - Physico-chemical Properties
| Molecular Formula | C16H10ClN3O3 |
| Molar Mass | 327.72 |
| Density | 1.4414 (rough estimate) |
| Boling Point | 558.9±50.0 °C(Predicted) |
| Flash Point | 291.8°C |
| Vapor Presure | 4.25E-13mmHg at 25°C |
| Appearance | powder to crystal |
| Color | Orange to Brown |
| pKa | 13.50±0.50(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.6470 (estimate) |
| MDL | MFCD00059095 |
| Physical and Chemical Properties | solubility: slightly soluble in ethanol, acetone and benzene, blue-red in concentrated sulfuric acid, yellow-red precipitate after dilution; Vermilion in case of concentrated nitric acid; it is a purple solution in dilute potassium hydroxide alcohol solution. hue or shade: brilliant yellow relative density: 1.45-1.60 Bulk density/(lb/gal):12.1-13.3 melting point/℃:275 average particle size/μm:0.24 particle shape: Rod specific surface area/(m2/g):17 pH value/(10% slurry):5.5-7.5 oil absorption/(g/100g):34-70 hiding power: translucent diffraction curve:  reflection curve:  orange-red powder, density 1.45~1.65g/cm3, bright coloring, insoluble in water, slightly soluble in ethanol, acetone and benzene. Dissolved in concentrated sulfuric acid for blue magenta, diluted yellow red precipitation, dissolved in concentrated nitric acid for bright red, in dilute sodium hydroxide does not change color, good mobility and hiding, poor heat resistance. |
| Use | red appears as a yellow-light red, between the more yellow-light C.I. Pigment orange 5 with more blue light C.I. Pigment Red was between 3 shades, light fastness was 6 grades, but darkened upon exposure to the sun. Mainly used in air self-drying type ink, bleeding in baking enamel; In the offset and packaging printing ink coloring strength is higher than the pigment orange 5 and Pigment Red 3, can also be used for shoe polish, floor wax, colored chalk, watercolour and Food Pigment Red 36(USA). There are 41 types of products put on the market. It is mainly used for the coloring of ink, water color or oil color pigment and mud, and can also be used for the coloring of rubber, natural lacquer, cosmetic coating and pigment printing. |
C.I. Pigment Red 4 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36 - Irritating to the eyes |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| RTECS | QL3436000 |
C.I. Pigment Red 4 - Reference Information
| color index | 12085 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | is mainly used for coloring ink, watercolor or oil paint and inkpad, and can also be used for coloring rubber, natural lacquer, cosmetic paint and pigment printing. used for coloring paint, ink and stationery |
| category | toxic substances |
| flammability hazard characteristics | combustible, decomposition of toxic chlorides during combustion, nitrogen oxide gas |
| storage and transportation characteristics | warehouse low temperature, ventilation, drying |
| fire extinguishing agent | water, carbon dioxide, dry powder, sand |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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