MSDS for Molybdenum Phosphide

Identification

Product Name: Molybdenum Phosphide
Chemical Formula: MoP
CAS Number: 12019-90-8
Recommended Use: Used in chemical synthesis, electronics, catalyst research
Manufacturer Details: Chemical manufacturer’s name, address, and emergency contact number
Synonyms: Phosphorane, Molybdenum-Monophosphide
Trade Names: None commonly used
Molecular Weight: 126.93 g/mol

Hazard Identification

GHS Classification: Not classified as a hazardous substance
Hazard Statements: Dust may cause mild skin, eye, and respiratory irritation
Pictograms: None required under GHS
Precautionary Statements: Avoid breathing dust, wash hands after handling
Routes of Exposure: Inhalation, skin contact, eye contact
Potential Health Effects: Minor irritation to eyes, skin, and respiratory tract. No evidence of acute toxicity.
Environmental Hazards: May have an impact on aquatic organisms through long-term exposure
Signal Word: None

Composition / Information on Ingredients

Chemical Name: Molybdenum Phosphide
Concentration: 98-100%
CAS Number: 12019-90-8
Impurities/Additives: Trace amounts of unreacted materials possible (molybdenum oxide, elemental phosphorus). No hazardous impurities present at levels that need reporting
Other Components: No stabilizers, diluents, or other chemicals detected in significant quantity

First Aid Measures

Inhalation: Move person to fresh air, keep comfortable and monitor for respiratory discomfort. Get medical attention if symptoms persist.
Eye Contact: Flush eyes thoroughly with water for at least 15 minutes, lifting upper and lower eyelids occasionally. Remove contact lenses as appropriate. Seek prompt medical care if irritation continues.
Skin Contact: Wash skin thoroughly with soap and water. Remove contaminated clothing and seek medical care for persistent irritation.
Ingestion: Rinse mouth with water. Never induce vomiting. Seek medical attention for persistent discomfort.

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, and sand. Do not use water streams due to potential metal reaction hazard.
Fire Hazards: Non-flammable as a solid. Finely divided powders may present combustible dust risk if exposed to high heat or flame.
Special Protective Equipment for Fire Fighters: Full-face self-contained breathing apparatus and protective clothing recommended.
Fire/Explosion Hazard: No known risk of violent reactivity or explosion under normal conditions.
Decomposition Products: At very high temperatures, may emit phosphorus oxides or molybdenum oxides.

Accidental Release Measures

Spill Response: Wear protective gear to avoid contact with skin and eyes. Ventilate area; avoid dust formation.
Cleanup Methods: Carefully sweep up and place in suitable labeled container for proper disposal. Avoid generating airborne dust and minimize environmental release.
Personal Precautions: Use respiratory protection, gloves, and safety goggles in case of significant release.
Environmental Precautions: Prevent entry into drains, sewers, or watercourses due to long-term persistence in aquatic environments.

Handling and Storage

Handling: Use in a well-ventilated area. Minimize dust generation. Avoid contact with skin, eyes, and clothing.
Storage: Keep dry and store in tightly sealed containers away from strong acids, oxidizers, and moisture.
Special Precautions: Maintain good workplace hygiene. Store in designated chemical storerooms with appropriate labeling.
Temperature Sensitivity: Store at room temperature; avoid excessive heat.

Exposure Controls and Personal Protection

Threshold Limit Value (TLV): No specific limits established for molybdenum phosphide. Observe limits for particulates not otherwise classified.
Engineering Controls: Use local exhaust ventilation to control dust exposure in areas with significant handling.
Respiratory Protection: Wear approved particulate respirators in high-dust environments.
Eye Protection: Safety goggles or face shields required if risk of dust exposure exists.
Skin Protection: Chemical-resistant gloves and protective clothing as needed for extensive handling.
Other Protective Equipment: Eye wash stations and emergency showers should be accessible.

Physical and Chemical Properties

Appearance: Grey-black powder or solid
Odor: Odorless
Melting Point: Approximately 1450°C
Boiling Point: Not available
Solubility: Insoluble in water
Density: 6.2 g/cm³
Flash Point: Not applicable
Vapor Pressure: Negligible
pH: Not applicable
Evaporation Rate: Not applicable
Other Data: Stable under normal temperature and pressure

Stability and Reactivity

Chemical Stability: Stable under ambient conditions
Reactivity: Reacts with strong acids, forming hazardous gases
Conditions to Avoid: Avoid contact with moisture, extreme heat, and strong oxidizing agents
Hazardous Decomposition Products: Phosphorus oxides, molybdenum oxides when heated strongly
Hazardous Polymerization: Will not occur

Toxicological Information

Acute Toxicity: No significant acute toxicity data available
Irritation: Dust can irritate eyes, skin, or respiratory tract
Chronic Effects: No evidence yet of chronic health effects from repeated exposure. Minimal genotoxicity or carcinogenicity risk based on structure and available research.
Routes of Exposure: Inhalation, skin, and eye contact
Toxicokinetics: Poorly absorbed through intact skin; most exposures are benign with proper protection.
Target Organs: Data not sufficient to identify specific target organ toxicity

Ecological Information

Aquatic Toxicity: Limited research suggests low solubility and low acute risk to aquatic organisms
Persistence and Degradability: Insoluble, not readily biodegradable; may persist in soil and sediment
Bioaccumulation Potential: Unlikely to biomagnify due to low solubility
Mobility in Soil: Immobile except for physical movement of fine particulates
Other Adverse Effects: Release into waterways should be minimized to reduce buildup in sediments

Disposal Considerations

Waste Disposal: Collect material for approved landfill disposal, following local, regional, and national regulations
Container Disposal: Empty containers should be triple-rinsed, punctured, and sent to authorized waste handlers
Precautions: Do not allow dust to escape into the environment. Avoid disposal in municipal waste without approval.
Reuse: Possible if material meets specification after recovery and testing

Transport Information

UN Number: Not classified as hazardous for transport
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Other Information: Ship in sealed, labeled containers. Protect from mechanical damage and moisture ingress.
Special Precautions for Transport: Handle with care to prevent spills. Avoid transport with oxidizers or strong acids.

Regulatory Information

OSHA Hazard Communication: Not considered hazardous under standard criteria for bulk material
TSCA Status: Listed in U.S. Toxic Substances Control Act inventory
REACH Status: Subject to registration in the European Union if above threshold quantities
Labeling Requirements: Proper chemical labeling with identification, hazard, precaution, and manufacturer information
Other Applicable Regulations: Subject to local, state, and federal environmental and safety rules. Consult with proper regulatory agencies for current status and compliance.