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| | N,N-Diphenyl-p-phenylenediamine Basic information |
| | N,N-Diphenyl-p-phenylenediamine Chemical Properties |
| Melting point | 143-145 °C(lit.) | | Boiling point | 220-225 °C0.5 mm Hg(lit.) | | bulk density | 560kg/m3 | | density | 1.2 | | refractive index | 1.6300 (estimate) | | Fp | 220-225°C/1mm | | storage temp. | Store below +30°C. | | solubility | DMSO (Slightly), Methanol (Slightly) | | form | Solid | | pka | 1.85±0.20(Predicted) | | color | Pale Grey to Very Dark Grey | | Water Solubility | <0.1 g/100 mL at 20 ºC | | Merck | 14,3329 | | BRN | 2215944 | | Henry's Law Constant | 4.7×104 mol/(m3Pa) at 25℃, HSDB (2015) | | Stability: | Stable. Incompatible with strong acids, strong oxidizing agents | | InChI | 1S/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 | | InChIKey | UTGQNNCQYDRXCH-UHFFFAOYSA-N | | SMILES | N(c1ccccc1)c2ccc(Nc3ccccc3)cc2 | | LogP | 4.536 (est) | | CAS DataBase Reference | 74-31-7(CAS DataBase Reference) | | NIST Chemistry Reference | 1,4-Benzenediamine, N,N'-diphenyl-(74-31-7) | | EPA Substance Registry System | N,N'-Diphenyl-p-phenylenediamine (74-31-7) |
| Hazard Codes | Xi | | Risk Statements | 43-52/53 | | Safety Statements | 24-37-61 | | WGK Germany | 1 | | RTECS | ST2275000 | | TSCA | TSCA listed | | HS Code | 2921 51 90 | | Storage Class | 11 - Combustible Solids | | Hazard Classifications | Aquatic Chronic 3
Skin Sens. 1 | | Hazardous Substances Data | 74-31-7(Hazardous Substances Data) | | Toxicity | LD50 orally in Rabbit: 2370 mg/kg LD50 dermal Rat 4500 mg/kg |
| | N,N-Diphenyl-p-phenylenediamine Usage And Synthesis |
| Description | N,N'-Diphenyl-4-phenylenediamine (DPPD) is a rubber
accelerant, formerly contained in the "black rubber
mix". The most frequent occupational categories are in
metal industry, homemakers, health services and
laboratories, and building industries. | | Chemical Properties | grey powder | | Uses | Polymerization inhibitor. Antioxidant for rubber, petroleum oils, feedstuffs. | | Uses | N1,N4-Diphenylbenzene-1,4-diamine can be used to prepare low pressure change, high temperature resistant flame retardant silicone rubber. | | Uses | N,N'-Diphenyl-4-phenylene diamine is an antioxidant for rubber, petroleum oils, and feed stuffs; stabilizer; a polymerization inhibitor; used to retard copper degradation;
as an intermediate for dyes, drugs, plasties and detergents; antidegradant for nitrile-butadiene rubber, natural, styrene-butadiene,
isoprene, butadiene, and ehloroprene rubbers. | | Definition | ChEBI: An N-substituted diamine that is 1,4-phenylenediamine in which one hydrogen from each amino group is replaced by a phenyl group. | | General Description | Gray or dark gray powder or flakes. | | Air & Water Reactions | Insoluble in water. | | Reactivity Profile | N,N-Diphenyl-p-phenylenediamine may react with oxidizing materials . Neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides. | | Fire Hazard | N,N-Diphenyl-p-phenylenediamine is combustible. N,N-Diphenyl-p-phenylenediamine may form explosive dust-air mixtures. | | Contact allergens | A rubber accelerant, formerly contained in “blackrubber mix.” The most frequent occupational categories are in the metal industry, homemakers, health services and laboratories, and the building industry. | | Purification Methods | Crystallise the diamine from EtOH, chlorobenzene/pet ether or *benzene. It has also been crystallised from aniline, then extracted three times with absolute EtOH. [Beilstein 13 H 80.] |
| | N,N-Diphenyl-p-phenylenediamine Preparation Products And Raw materials |
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