N,N′-Diphenyl-p-phenylenediamine , 98% , 74-31-7

Synonym(s):
DPPD;N,N′-Diphenyl-1,4-phenylenediamine

CAS NO.：74-31-7

Empirical Formula: C18H16N2

Molecular Weight: 260.33

MDL number: MFCD00003015

EINECS: 200-806-4

PRODUCT Properties

• Melting point: 143-145 °C(lit.)
• Boiling point: 220-225 °C0.5 mm Hg(lit.)
• Density: 1.2
• refractive index: 1.6300 (estimate)
• Flash point: 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
• Stability: Stable. Incompatible with strong acids, strong oxidizing agents
• LogP: 4.536 (est)

Description and Uses

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.

Polymerization inhibitor. Antioxidant for rubber, petroleum oils, feedstuffs.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H317-H412
• Precautionary statements: P273-P280-P302+P352
• Hazard Codes: Xi
• Risk Statements: 43-52/53
• Safety Statements: 24-37-61
• 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