Material Safety Data Sheet - Molybdenum Oxychloride

Identification

Product Name: Molybdenum Oxychloride
Chemical Formula: MoO2Cl2
Synonyms: Dioxodichloromolybdenum
CAS Number: 13824-64-5
Recommended Use: Laboratory reagent, catalyst precursor, materials synthesis
Supplier: [Manufacturer’s Name]
Emergency Phone: [Contact Number]

Hazard Identification

GHS Classification: Acute Toxicity - Inhalation Category 3, Skin Corrosion/Irritation Category 1B, Serious Eye Damage/Eye Irritation Category 1
Pictogram: Corrosive, Toxic
Signal Word: Danger
Hazard Statements: Toxic if inhaled, causes severe skin burns and eye damage, harmful if swallowed. Prolonged or repeated exposure affects the respiratory system. Chlorine gas generation possible if reacted improperly.
Precautionary Statements: Avoid breathing dust/fume/gas/mist/vapors/spray. Wear protective gloves, clothing, and eye/face protection. Wash skin thoroughly after handling. Keep container tightly closed.

Composition / Information on Ingredients

Chemical Name: Molybdenum Oxychloride
Common Name: MoO2Cl2
Concentration: 100% (pure compound)
Impurities: Trace metal chlorides possible, commonly maintained under 0.1%
Other Components: None present above reportable levels

First Aid Measures

Inhalation: Remove individual to fresh air. Provide oxygen or artificial respiration if breathing is difficult. Seek medical attention immediately.
Skin Contact: Remove contaminated clothing. Rinse skin immediately with plenty of water for at least 15 minutes. Get medical advice.
Eye Contact: Rinse eyes cautiously with water for several minutes, lifting eyelids occasionally. Call a doctor promptly.
Ingestion: Do not induce vomiting. Rinse mouth with water if person is conscious. Give plenty of water, seek medical attention immediately.
Most Important Symptoms: Burning sensation, coughing, conjunctivitis, nausea, ulcerations to mucous membranes.

Fire-Fighting Measures

Suitable Extinguishing Media: Use dry sand, dry chemical, or alcohol-resistant foam. Do not use water directly on the substance.
Hazardous Combustion Products: Molybdenum oxides, hydrogen chloride gas, chlorine gas under fire conditions.
Protective Equipment for Firefighters: Wear self-contained breathing apparatus, full protective clothing, and face shield.
Advice for Firefighting: Approach from upwind, prevent runoff from entering drains or waterways.

Accidental Release Measures

Personal Precautions: Evacuate area. Keep unnecessary or unprotected individuals away. Wear respiratory protection, gloves, goggles, and chemical-resistant clothing.
Environmental Precautions: Prevent product from entering drains, sewers, surface or ground water.
Methods for Cleanup: Sweep up and shovel into suitable dry containers. Avoid creating dust. Ventilate area. Wash spill site after material pickup is complete. Dispose material as hazardous waste.

Handling and Storage

Safe Handling: Use only in well-ventilated areas, away from moisture and incompatible materials. Minimize contact with skin and eyes. Avoid generating dust or aerosols.
Storage Conditions: Keep container tightly closed in a cool, dry, well-ventilated place. Store separately from acids, bases, moisture, and reducing agents.
Specific End Uses: Industrial and research laboratories with appropriate engineering controls and trained staff.

Exposure Controls and Personal Protection

Exposure Limits: No specific occupational exposure limit established for Molybdenum Oxychloride. Molybdenum compounds (as Mo): ACGIH TLV 0.5 mg/m³ (inhalable fraction).
Engineering Controls: Use fume hood or local exhaust ventilation. Keep work area clean and free from contaminant dust accumulation.
Personal Protection: Wear appropriate chemical-resistant gloves (e.g., neoprene), splash goggles or safety glasses with side shields, and a laboratory coat. Use NIOSH/MSHA approved respirators if exposure limits are exceeded.
Hygiene Measures: Remove and launder contaminated clothing before reuse. Wash hands thoroughly after handling.

Physical and Chemical Properties

Appearance: Pale yellow to greenish crystalline solid or powder
Odor: Pungent, characteristic
pH: Not applicable
Melting Point: 184°C
Boiling Point: Decomposes above 230°C
Solubility: Decomposes in water, soluble in hydrochloric acid
Vapor Density: Not determined
Relative Density: 3.3 g/cm³
Flash Point: Non-flammable
Evaporation Rate: Not available
Auto-ignition Temperature: Not applicable

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions, reacts with water, humidity, alcohols, and strong bases to produce corrosive hydrogen chloride.
Conditions to Avoid: Moisture, water, high humidity, sources of ignition.
Incompatible Materials: Strong bases, reducing agents, water, alcohols, strong acids.
Hazardous Decomposition Products: Hydrogen chloride, chlorine gas, molybdenum oxides.
Polymerization: Will not occur under normal conditions.

Toxicological Information

Acute Toxicity: Toxic by inhalation, ingestion and skin contact. LC50 (rat, inhalation): 0.55 mg/L/4h, LD50 (oral, rat): ~57 mg/kg
Skin Corrosion/Irritation: Causes severe burns to skin.
Serious Eye Damage/Irritation: Causes permanent eye damage.
Respiratory Effects: Inhalation leads to severe irritation of respiratory tract, cough, lesions.
Chronic Exposure: Long-term: potential lung, liver, and kidney effects, skin sensitization.
Other Data: No available data linking to carcinogenicity, mutagenicity, or reproductive toxicity for molybdenum oxychloride.

Ecological Information

Ecotoxicity: Toxic to aquatic organisms. Adverse effects in fish and invertebrates possible upon release to water.
Persistence and Degradability: Not readily biodegradable. Hydrolyzes in water, forming corrosive products.
Bioaccumulative Potential: Molybdenum can accumulate in some aquatic plants and animals.
Mobility in Soil: Releases to soil may increase molybdenum mobility due to solubility in acid conditions.
Other Adverse Effects: Avoid environmental release. Local water authorities may enforce discharge restrictions.

Disposal Considerations

Waste Treatment Methods: Collect and contain all material for proper disposal. Consult regulations for hazardous waste category assigned in your area.
Disposal Containers: Use sealed, compatible, and labeled containers. Do not dispose to regular trash or drain.
Contaminated Packaging: Rinse thoroughly and dispose as hazardous waste unless fully decontaminated.
Special Precautions: Limit potential dust and vapor releases. Document all disposal actions.

Transport Information

UN Number: UN3260
Proper Shipping Name: Corrosive Solid, Acidic, Inorganic, N.O.S. (contains Molybdenum Oxychloride)
Transport Hazard Class: 8 (Corrosive substance)
Packing Group: II
Marine Pollutant: Yes
Special Precautions for Users: Avoid package rupture, ensure all transport complies with national and international law. Emergency response guide numbers should accompany shipments.

Regulatory Information

OSHA Status: Hazardous, covered under Hazard Communication Standard (29 CFR 1910.1200).
TSCA Inventory: Listed chemical.
SARA Title III: Not subject to Section 302. May be listed on Section 313 for environmental release reporting.
WHMIS Classification (Canada): Class E: Corrosive material; D1B: Toxic material.
EINECS: 237-515-5
Chemical Safety Assessment: Required prior to industrial use. Always follow regional, national, and international regulations for use, handling, storage, and disposal.