Material Safety Data Sheet (MSDS) Phosphorus Oxychloride (POCl₃)

Resonance March 18, 2026

 B. Sc Chemistry III & IV Semester NEP 2020 w.e.f June 2025

SEC00022764P

CHE/SEC/P/276
Lab Safety and Laboratory Practices
(Practical Paper)

Material Safety Data Sheet (MSDS)

Phosphorus Oxychloride (POCl₃)

1. Identification of the Substance

  • Chemical Name: Phosphorus Oxychloride

  • Formula: POCl₃

  • Molecular Weight: 153.33 g/mol

  • Manufacturer/Supplier: Laboratory Chemical Supplier

  • Emergency Contact No.: As per supplier

2. Hazard Identification

  • Hazard Class: Highly toxic, corrosive

  • Hazard Symbols: Corrosive, Toxic

  • Signal Word: Danger

  • Hazard Statements:

    • Causes severe burns to skin and eyes

    • Harmful if inhaled

    • Reacts violently with water

3. Composition / Information on Ingredients

Component NamePercentage (%)CAS Number
Phosphorus Oxychloride~100%10025-87-3

4. First Aid Measures

  • Inhalation: Move to fresh air immediately; seek medical help

  • Skin Contact: Wash with plenty of water for 15 minutes

  • Eye Contact: Rinse eyes with water; seek medical attention

  • Ingestion: Do not induce vomiting; get medical help immediately

5. Fire-Fighting Measures

  • Suitable Extinguishers: Dry chemical, CO₂

  • Special Hazards: Releases toxic fumes (HCl, phosphorus oxides)

  • Protective Equipment: Self-contained breathing apparatus

6. Accidental Release Measures

  • Personal Precautions: Wear PPE, avoid inhalation

  • Environmental Precautions: Prevent entry into water sources

  • Cleanup Method: Absorb with dry sand and dispose safely

7. Handling and Storage

  • Handling: Use in fume hood, avoid contact with moisture

  • Storage: Store in dry, cool, well-ventilated area

8. Exposure Controls / Personal Protection

  • Exposure Limits: As per guidelines

  • PPE Required: Gloves, goggles, face shield, lab coat

9. Physical and Chemical Properties

  • Appearance: Colorless to pale yellow liquid

  • Odor: Pungent, irritating

  • Boiling Point: ~105°C

  • Melting Point: ~1°C

  • Solubility: Reacts with water

10. Stability and Reactivity

  • Stability: Stable under dry conditions

  • Conditions to Avoid: Moisture, heat

  • Incompatible Materials: Water, alcohols, bases

11. Toxicological Information

  • Health Effects: Severe irritation, burns, lung damage

  • LD₅₀: Toxic (exact value varies)

12. Ecological Information

  • Harmful to aquatic life

13. Disposal Considerations

  • Dispose as hazardous waste under supervision

14. Transport Information

  • UN Number: 1810

  • Transport Hazard Class: 8 (Corrosive)

15. Regulatory Information

  • Follow chemical safety regulations and guidelines

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