Di-beta-naphthyl-p-phenylenediamine
Diafen NN
CAS: 93-46-9;112721-02-5;60005-69-8
Molecular Formula: C26H20N2
Di-beta-naphthyl-p-phenylenediamine - Names and Identifiers
| Name | Diafen NN |
| Synonyms | DBNPD Diafen NN Santowhite CL 2-Naphthyl-p-phenylenediamine 1,4-Bis(2-naphthylamino)benzene Di-beta-naphthyl-p-phenyldiamine DI-B-NAPHTHYL-P-PHENYLENE DIAMINE Di-beta-naphthyl-p-phenylenediamine di-beta-naphthyl-p-phenylenediamine N,N-DI-2-NAPHTHYL-P-PHENYLENEDIAMINE N,N'-DI-2-NAPHTHYL-P-PHENYLENEDIAMINE N,N'-di-2-naphthyl-p-phenylenediamine N,N'-Bis(2-naphthyl)-p-phenylenediamine N,N'-DI-2-NAPHTHYL-1,4-PHENYLENEDIAMINE N,N'-Di-beta-naphthyl-p-phenylenediamine N,N'-DI-BETA-NAPHTHYL-P-PHENYLENEDIAMINE N,N'-Di-2-naphthalenyl-1,4-benzenediamine p-Phenylenediamine, N,N'-(di-2-naphthyl)- N,N'-Bis(beta-naphthyl)-p-phenylenediamine N,N'-di(naphthalen-2-yl)benzene-1,4-diamine 1,4-Benzenediamine, N,N'-di-2-naphthalenyl- 4-13-00-00119 (Beilstein Handbook Reference) |
| CAS | 93-46-9 112721-02-5 60005-69-8 |
| EINECS | 202-249-2 |
| InChI | InChI=1/C26H20N2/c1-3-7-21-17-25(11-9-19(21)5-1)27-23-13-15-24(16-14-23)28-26-12-10-20-6-2-4-8-22(20)18-26/h1-18,27-28H |
Di-beta-naphthyl-p-phenylenediamine - Physico-chemical Properties
| Molecular Formula | C26H20N2 |
| Molar Mass | 360.45 |
| Density | 1.25 |
| Melting Point | 225-229°C |
| Boling Point | 232-134°C (dec.) |
| Flash Point | 399°C |
| Water Solubility | <0.1 g/100 mL at 19 ºC |
| Solubility | Chloroform (Slightly, Heated, Sonicated), DMSO (Slightly) |
| Vapor Presure | 9.87E-15mmHg at 25°C |
| Appearance | Solid |
| Color | Pale Grey to Light Grey |
| pKa | 3.10±0.30(Predicted) |
| Storage Condition | Keep in dark place,Sealed in dry,Room Temperature |
| Refractive Index | 1.7620 (estimate) |
| MDL | MFCD00053487 |
| Physical and Chemical Properties | Properties: light gray-white powder, soluble in hot aniline, benzene, ethanol, acetone, chloroform, carbon disulfide, ethyl acetate, insoluble in water. Melting Point: ≥ 225 ℃. density 1.25 |
| Use | Antioxidant DNP is one of the important low toxicity antioxidants in rubber and plastic processing, heat resistance, anti-aging, resistance to copper, manganese and other harmful metal properties Anti-aging agent DNP is widely used in copper, manganese and other harmful metal inhibition and heat aging antioxidant has obvious activation effect on thiazole accelerator. Suitable for cables, elastic rubber and other industrial rubber products and brown or dark latex products. Natural rubber and synthetic rubber general-purpose antioxidant Mainly used as antioxidants of rubber, latex and plastics. The antioxidant DNP is not only a chain break inhibitor, but also a metal complexing agent. It has excellent heat aging resistance, natural aging resistance and the effect of Resisting harmful metals such as copper and manganese. In the styrene-butadiene rubber has the function of anti-ultraviolet light. No anxiety on latex |
Di-beta-naphthyl-p-phenylenediamine - Risk and Safety
| 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 | S22 - Do not breathe dust. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| RTECS | ST2100000 |
| HS Code | 29215900 |
| Toxicity | LD50 oral in rat: 4500mg/kg |
Di-beta-naphthyl-p-phenylenediamine - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | Anti-aging agent DNP is a gray powder that gradually changes to dark gray in long-term light exposure. Insoluble in water gasoline; Slightly soluble in acetone and chlorobenzene, soluble in hot aniline and nitrobenzene; Soluble in hot acetic acid, specific gravity 1.25. |
| range of use | mainly used as antioxidants for rubber, latex and plastics. The antioxidant DNP is not only a chain break inhibitor, but also a metal complexing agent. It has excellent heat aging resistance, natural aging resistance and the effect of Resisting harmful metals such as copper and manganese. In the styrene-butadiene rubber has the function of anti-ultraviolet light. There is no destabilizing effect on the latex, and there is no disadvantage of increasing the viscosity. It has obvious activation effect on thiazole accelerator. It is suitable for blending in natural rubber, synthetic rubber and rubber dairy products. Used in the manufacture of Tire Cord, cable, elastic tape and other industrial rubber products, rubber dairy products (such as medical supplies, plaster), etc. |
| Application | is a universal antioxidant for natural rubber and synthetic rubber mainly used as antioxidant for rubber, latex and plastic. The antioxidant DNP is not only a chain break inhibitor, but also a metal complexing agent. It has excellent heat aging resistance, natural aging resistance and the effect of Resisting harmful metals such as copper and manganese. In the styrene-butadiene rubber has the function of anti-ultraviolet light. There is no destabilizing effect on the latex, and there is no disadvantage of increasing the viscosity. It has obvious activation effect on thiazole accelerator. It is suitable for blending in natural rubber, synthetic rubber and rubber dairy products. Used in the manufacture of Tire Cord, cable, elastic tape and other industrial rubber products, rubber dairy products (such as medical supplies, plaster), etc. This product is one of the varieties with the smallest pollution in the amine anti-aging agent, but it still has the disadvantage of turning red in light or oxidant. The dosage of the antioxidant DNP is 0.2-1 part, and more than 2 parts will cause spraying. The product can be used alone, can also be used with other antioxidants, such as antioxidant MB, antioxidant DOD, antioxidant RD and so on. The use in combination with the antioxidant 124 is particularly suitable for foam milk products. DNP can be used as a heat-resistant antioxidant for ABS, polyoxymethylene and polyamide engineering plastics with the dosages of 0.5, 0.5 and 0.3 PHR respectively. Can also be used for chlorinated Polyether, the amount of 1. The chlorinated Polyether may also be used in combination with 1 part of the ultraviolet absorber UV-9 to provide weather resistance. The product is amine antioxidant less toxic varieties. Antioxidant DNP is one of the important low toxicity antioxidants in rubber and plastic processing, heat resistance, anti-aging, anti-copper, manganese and other harmful metal performance characteristics of antioxidant DNP is widely used in copper, manganese and other harmful metals inhibition and heat aging antioxidant on thiazole accelerator has obvious activation effect. Suitable for cables, elastic rubber and other industrial rubber products and brown or dark latex products. Natural rubber and synthetic rubber is a general-purpose antioxidant mainly used as rubber, latex and plastics antioxidants. The antioxidant DNP is not only a chain break inhibitor, but also a metal complexing agent. It has excellent heat aging resistance, natural aging resistance and the effect of Resisting harmful metals such as copper and manganese. In the styrene-butadiene rubber has the function of anti-ultraviolet light. There is no unstable effect on the latex, and there is no lack of viscosity increase |
| production method | results from the condensation of p-phenylenediamine with β-naphthol. P-phenylenediamine and β-naphthol were added to the autoclave and the condensation reaction was carried out at 260-265 °c. After completion of the reaction, the reaction product was refluxed with alcohol, cooled, filtered, washed with ethanol, dried, and pulverized to obtain a finished product. Raw material consumption (kg/t) p-phenylenediamine 330 β-naphthol 1100 |
Last Update：2024-04-10 22:29:15
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Product Name: N,N'-Di-2-naphthyl-p-phenylenediamine Request for quotationCAS: 93-46-9
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