PRODUCT Properties
| Melting point: | 52 °C |
| Boiling point: | 302 °C(lit.) |
| Density | 1.16 |
| vapor density | 5.82 (vs air) |
| vapor pressure | 1 mm Hg ( 108 °C) |
| refractive index | 1.5785 (estimate) |
| Flash point: | 307 °F |
| storage temp. | Store below +30°C. |
| solubility | alcohol: passes test |
| form | crystalline |
| pka | 0.79(at 25℃) |
| color | tan |
| Odor | Floral odor |
| Water Solubility | Slightly soluble. 0.03 g/100 mL |
| Sensitive | Air & Light Sensitive |
| Merck | 14,3317 |
| BRN | 508755 |
| Exposure limits | TLV-TWA 10 mg/m3 (ACGIH and MSHA). |
| Dielectric constant | 3.3（11℃） |
| Stability: | Stable; may discolour on exposure to light. Incompatible with strong acids, strong oxidizing agents. |
| LogP | 3.82 at 20.2℃ |
| CAS DataBase Reference | 122-39-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Diphenylamine(122-39-4) |
| EPA Substance Registry System | Diphenylamine (122-39-4) |
Description and Uses
Solutions of diphenylamine are used to treat apples a few days before harvest. Residue on apples’ surfaces of 10 ppm is permitted by regulation in Australia, Canada, and the United States.
Diphenylamine is used post-harvest to prevent superficial scald in apples in cold store.
Safety
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301+H311+H331-H373-H410 |
| Precautionary statements | P273-P280-P301+P310-P302+P352+P312-P304+P340+P311-P314 |
| Hazard Codes | T,N,F |
| Risk Statements | 23/24/25-33-50/53-52/53-39/23/24/25-11-51/53 |
| Safety Statements | 28-36/37-45-60-61-28A-16-7 |
| OEB | B |
| OEL | TWA: 10 mg/m3 |
| RIDADR | UN 3077 9/PG 3 |
| WGK Germany | 3 |
| RTECS | JJ7800000 |
| F | 8-10-23 |
| Autoignition Temperature | 630 °C DIN 51794 |
| TSCA | Yes |
| HS Code | 2921 44 00 |
| HazardClass | 6.1 |
| PackingGroup | III |
| Hazardous Substances Data | 122-39-4(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 1120 mg/kg LD50 dermal Rabbit > 5000 mg/kg |
