Model Number

CAS: 74-31-7

English name: N,N-diphenyl-p-phenylenediamine
English abbreviation: DPPD
CAS: 74-31-7
1. Physical and chemical properties:
1.1 Appearance: Greyish brown powder
1.2 Molecule formula: C18H16N2
1.3 Molecule weight: 260.34
1.5 Specific gravity: 1.2
1.6 Solubility: Dissolve in benzene, toluene, ether, acetone. Dissolve slightly in ethanol. Undissolved in water.

1.7 Boiling point : 220-225℃ 0.5mmHg
1.8 Stability and reactivity : It? flammable. When it? exposed to air or sunlight the product will be oxidized and changed its color.
When contacting with hot dilute hydrochloric acid it becomes green.

2. Technique indexes:

Item Standard
Appearance Grayish brown powder
Initial melting point ℃ 140 min
Ash content ％(m/m) 0.40 max
Loss on heating 0.40 max
Remainder through sieving (100 mesh),% (m/m 1.0 max
Jason Jiang

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