4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide
Pigment Red 21
CAS: 6410-26-0
Molecular Formula: C23H16ClN3O2
4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide - Names and Identifiers
| Name | Pigment Red 21 |
| Synonyms | Pigment Red 21 Pigment Red 21 C.I.PigmentRed21 4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide (4Z)-4-[2-(2-chlorophenyl)hydrazinylidene]-3-oxo-N-phenyl-3,4-dihydronaphthalene-2-carboxamide |
| CAS | 6410-26-0 |
| EINECS | 229-096-4 |
| InChI | InChI=1/C23H16ClN3O2/c24-19-12-6-7-13-20(19)26-27-21-17-11-5-4-8-15(17)14-18(22(21)28)23(29)25-16-9-2-1-3-10-16/h1-14,26H,(H,25,29)/b27-21- |
4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide - Physico-chemical Properties
| Molecular Formula | C23H16ClN3O2 |
| Molar Mass | 401.85 |
| Density | 1.311g/cm3 |
| Boling Point | 566.1±50.0 °C(Predicted) |
| pKa | 10.63±0.50(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.665 |
| Physical and Chemical Properties | solubility: the melting point was 241 ° C., and the crystals in toluene were brown-red needle-like crystals. hue or color: yellow Red melting point/° C.: 241 bright yellow red, excellent in light resistance. The heat resistance is stable to 150 ℃, and the solvent resistance is poor. |
| Use | The pigment varieties give yellow light red, due to the general application performance, can not meet the requirements of the industry, the commodity value is not large, mainly used in coating and fabric printing and dyeing. It is mainly used for the coloring of soap products, and can also be used as a coloring agent for paints, printing inks, etc. |
4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide - Upstream Downstream Industry
4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide - Introduction
Pigment Red 21, also known as Pigment Red 21, is an organic pigment with a bright red hue.
Nature:
- Pigment Red 21 chemical name is dichloroaniline red pigment, chemical formula is C15H11Cl2N3O.
-It is soluble in organic solvents, but insoluble in water.
- Pigment Red 21 has good light resistance, weather resistance and chemical resistance, and is not easy to fade.
Use:
- Pigment Red 21 is commonly used in the pigment industry to dye or color various materials.
-It is widely used in painting, paint, ink, plastic, fiber, rubber, ceramics, glass, adhesives and cosmetics.
Preparation Method:
-The preparation method of this pigment can be obtained by the reaction of diphenylamine and phthalide.
-The specific synthesis process is complex and requires a series of chemical reactions and purification steps.
Safety Information:
- Pigment Red 21 generally does not cause harm to the human body under normal use conditions.
-But during the preparation process, harmful gases or vapors may be generated, which need to be properly controlled and handled.
-When using Pigment Red 21, it is recommended to wear appropriate personal protective equipment and avoid contact with skin, eyes and respiratory tract.
-If exposed or inhaled, rinse immediately with water and seek medical help.
It should be noted that the information provided above is for reference only. When using the Pigment Red 21, you should follow the relevant regulations and safety practices, and refer to the official safety technical instructions.
Nature:
- Pigment Red 21 chemical name is dichloroaniline red pigment, chemical formula is C15H11Cl2N3O.
-It is soluble in organic solvents, but insoluble in water.
- Pigment Red 21 has good light resistance, weather resistance and chemical resistance, and is not easy to fade.
Use:
- Pigment Red 21 is commonly used in the pigment industry to dye or color various materials.
-It is widely used in painting, paint, ink, plastic, fiber, rubber, ceramics, glass, adhesives and cosmetics.
Preparation Method:
-The preparation method of this pigment can be obtained by the reaction of diphenylamine and phthalide.
-The specific synthesis process is complex and requires a series of chemical reactions and purification steps.
Safety Information:
- Pigment Red 21 generally does not cause harm to the human body under normal use conditions.
-But during the preparation process, harmful gases or vapors may be generated, which need to be properly controlled and handled.
-When using Pigment Red 21, it is recommended to wear appropriate personal protective equipment and avoid contact with skin, eyes and respiratory tract.
-If exposed or inhaled, rinse immediately with water and seek medical help.
It should be noted that the information provided above is for reference only. When using the Pigment Red 21, you should follow the relevant regulations and safety practices, and refer to the official safety technical instructions.
Last Update：2024-04-09 15:17:59
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Product Name: Pigment Red 21 Visit Supplier Webpage Request for quotation
CAS: 6410-26-0
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 6410-26-0
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for 4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide
Sodium nitrite
Urea
Aniline
Oleic acid
2-Amino-4-chloro-5-methylbenzenesulfonic acid
4-Aminotoluene-3-sulfonic acid
Urea
Aniline
Oleic acid
2-Amino-4-chloro-5-methylbenzenesulfonic acid
4-Aminotoluene-3-sulfonic acid
Downstream Products for 4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide
Amino resin paint
Various color alkyd ready mixed paint
Various color nitrocellulose exterior enamel Q04-2
Various color alkyd ready mixed paint
Various color nitrocellulose exterior enamel Q04-2