74-31-7
Diphenyl-p-phenylenediamine
CAS: 74-31-7
Molecular Formula: C18H16N2
74-31-7 - Names and Identifiers
| Name | Diphenyl-p-phenylenediamine |
| Synonyms | JZF DPPD DFFD diafen naugardj antagedp Nocrac DP naugard j Naugard J diafen ff Antage DP nonflex h antigenep nocrac dp nonox dppd flexamine g permanax 18 altofanedip ekaland dppd AGERITE DPPD Agerite DPPD Diphenyl PPD Altofane DIP permanax dppd ANTIOXIDANT H stabilizer dppd 1,4-Dianilinobenzene p-bis(phenylamino)benzene p-phenylaminodiphenylamine p-phenylenediphenyldiamine 4-Phenylaminodiphenylamine Diphenyl-p-phenylenediamine 1,4-Bis(phenylamino) benzene N,N'-Difenyl-p-fenylendiamin N,N-Diphenyl-1,4-benzenediamine N,N'-Diphenyl-1,4-diaminobenzene N,N'-diphenyl-1,4-diaminobenzene N,N'-diphenyl-1,4-Benzenediamine N,N'-diphenylbenzene-1,4-diamine 4,4'-Diphenyl-p-phenylenediamine 4,4'-diphenyl-p-phenylenediamine N,N'-Diphenyl-p-phenylenediamine N,N'-diphenyl-1,4-phenylenediamine |
| CAS | 74-31-7 |
| EINECS | 200-806-4 |
| InChI | InChI=1/C18H16N2/c1-3-7-15(8-4-1)19-17-11-13-18(14-12-17)20-16-9-5-2-6-10-16/h1-14,19-20H |
74-31-7 - Physico-chemical Properties
| Molecular Formula | C18H16N2 |
| Molar Mass | 260.33 |
| Density | 1.2 |
| Melting Point | 143-145°C(lit.) |
| Boling Point | 220-225°C0.5mm Hg(lit.) |
| Flash Point | 220-225°C/1mm |
| Water Solubility | <0.1 g/100 mL at 20 ºC |
| Solubility | DMSO (Slightly), Methanol (Slightly) |
| Vapor Presure | 5.6E-09mmHg at 25°C |
| Appearance | Solid |
| Color | Pale Grey to Very Dark Grey |
| Merck | 14,3329 |
| BRN | 2215944 |
| pKa | 1.85±0.20(Predicted) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Incompatible with strong acids, strong oxidizing agents |
| Refractive Index | 1.6300 (estimate) |
| MDL | MFCD00003015 |
| Physical and Chemical Properties | Melting Point: 145 - 152 ℃ Boiling Point: 220 - 225 ℃ density: 1.2 water-soluble:<0.1g/100 mL at 20 C Appearance: gray powder or flaky |
| Use | For natural butadiene-benzene, nitrile, cis-butyl, butyl, polyisoprene and other rubber, latex, can make it has good resistance to multiple flexing and crack resistance. Improve the tensile strength, enhance the thermal oxygen, ozone and copper wall iron manganese and other harmful metal protection, no effect on sulfide. The combination with anti-aging agent D can solve various aging problems of dark rubber products. In addition, also used as polyethylene, polypropylene? |
74-31-7 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R43 - May cause sensitization by skin contact R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S24 - Avoid contact with skin. S37 - Wear suitable gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| WGK Germany | 1 |
| RTECS | ST2275000 |
| TSCA | Yes |
| HS Code | 2921 51 90 |
| Toxicity | LD50 orally in Rabbit: 2370 mg/kg LD50 dermal Rat 4500 mg/kg |
74-31-7 - Upstream Downstream Industry
| Raw Materials | Aniline |
74-31-7 - 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) |
| Application | used in natural butadiene-styrene, Butyronitrile, cis-butyl, butyl, polyisoprene and other rubber, latex, it can have good resistance to multiple flexing and crack resistance. Improve the tensile strength, enhance the thermal oxygen, ozone and copper wall iron manganese and other harmful metal protection, no effect on sulfide. The combination with anti-aging agent D can solve various aging problems of dark rubber products. In addition, also used as polyethylene, polypropylene used as antioxidant in the rubber industry used for natural, butyl benzene, Butyronitrile, CIS butyl, butyl, butyl hydroxyl, polyisoprene and other rubber and latex used as antioxidant |
| production method | hydroquinone and aniline are catalyzed by triethyl phosphate, the reaction was carried out at 280-300 ℃ and a pressure of 0.7MPa for a certain time. After completion of the reaction, vacuum distillation was performed. Excess aniline was removed under low vacuum and then the intermediate was distilled off under higher vacuum. The remaining material of the steamed intermediate is sliced, powdered, and packaged to be the finished product. The synthesis reaction is as follows |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 2370 mg/kg; Oral-mouse LD50: 18000 mg/kg |
| stimulation data | eyes-rabbit 500 mg/24 h severe |
| explosive hazard characteristics | can react with oxidant; Weak allergy agent |
| flammability hazard characteristics | when heated, the open flame is more flammable; Heat decomposition of toxic nitrogen oxide smoke; teratogens |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | dry powder, carbon dioxide; 1211; Foam |
| 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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Raw Materials for 74-31-7