White phosphorus
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Category：Agrochemicals | Brand：MT
Introduction
White Phosphorus
Chemical Name: Phosphorus (white)
Synonyms: Yellow phosphorus; Tetraphosphorus (P₄)
CAS Number: 12185-10-3 / 7723-14-0
Molecular Formula: P₄
Molecular Weight: 123.895 g/mol
Physical & Chemical Properties
| Property | Specification |
|---|---|
| Appearance | Waxy white-to-yellow transparent solid (darkens on exposure to light) |
| Odor | Garlic-like (characteristic) |
| Melting Point | 44.1°C (111°F) |
| Boiling Point | 280°C (536°F) |
| Density | 1.82 g/cm³ (20°C) |
| Solubility | Insoluble in water; soluble in organic solvents (benzene, CS₂) |
| Autoignition | 30°C (86°F) in air (spontaneously flammable) |
| Storage | Under water/inert liquid (N₂ atmosphere) |
Hazard & Safety Information (GHS/UN)
Danger Symbols:
🔥 Flammable (Category 1)
☠️ Acute Toxicity (Category 1)
⚠️ Environmental Hazard
Hazard Codes:
• H250: Catches fire spontaneously if exposed to air
• H300: Fatal if swallowed
• H314: Causes severe skin burns and eye damage
• H400: Very toxic to aquatic life
UN Number: UN1381 (Packing Group I)
Chemical Behavior
• Pyrophoric: Ignites spontaneously in air (forms P₄O₁₀ smoke)
• Reactivity:
- Violent reactions with oxidizers, halogens, sulfur
- Explosive with potassium chlorate
• Toxicity: - LD₅₀ (oral, rat): 3.03 mg/kg (extremely toxic)
- Causes “phossy jaw” (chronic exposure)
Applications
✔ Smoke munitions (military)
✔ Phosphoric acid production
✔ Rodenticides (historical, now banned)
Disclaimer:
The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.
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