Diphenylamine CAS No.122-39-4

Diphenylamine (CAS No. 122-39-4) 

1. Basic Information

Chemical Name: DiphenylamineSynonyms: DPA; N-Phenylaniline; AnilinobenzeneCAS Number: 122-39-4Molecular Formula: C₁₂H₁₁NMolecular Weight: 169.22 g/molAppearance: White to light brown crystalline solidOdor: Floral, amine-like odorOdor Threshold: ~0.01 ppm

2. Physical and Chemical Properties

Melting Point: 53–54°C (127–129°F)Boiling Point: 302°C (576°F)Density: 1.16 g/cm³ at 20°CSolubility:Water: 0.03 g/L (20°C)Organic solvents: Soluble in ethanol, ether, benzene, acetoneVapor Pressure: 0.001 mmHg at 25°CFlash Point: 153°C (307°F) (closed cup)Autoignition Temperature: 630°C (1166°F)

3. Chemical Structure

     ○    / \   /   \  N     ○   \   /    \ /     H

(Where ○ represents phenyl rings)

4. Hazards (GHS Classification)

Acute Toxicity: Harmful if swallowed (H302)Skin Irritation: Causes mild skin irritation (H315)Eye Irritation: Causes serious eye irritation (H319)Environmental Hazards: Toxic to aquatic life (H411)NFPA Rating: Health 2, Flammability 1, Reactivity 0

5. Storage and Handling

Storage:Keep in tightly closed containersStore in cool, dry, well-ventilated areaProtect from light and oxidizing agentsHandling:Use nitrile gloves and safety gogglesAvoid dust formation (use local exhaust)

6. Applications

Explosives Industry: Stabilizer for nitrocellulose propellantsAgriculture: Post-harvest fungicide for applesRubber Industry: Antioxidant in synthetic rubbersDye Manufacturing: Intermediate for azo dyes

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