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Material Safety Data Sheet: Sulfur Tetrachloride

Identification

Product Name: Sulfur Tetrachloride
Chemical Formula: SCl4
Synonyms: Sulfur(IV) chloride, Sulphur tetrachloride
CAS Number: 10026-03-6
Recommended Use: Laboratory chemical, chemical synthesis
Supplier Details: Name, address, telephone, and emergency contact of supplier

Hazard Identification

Classification: Corrosive, toxic if inhaled, harmful if swallowed, reacts violently with water
Hazard Statements: Causes severe skin burns and eye damage; may cause respiratory irritation; toxic to aquatic life
Pictograms: Corrosive, toxic, harmful
Precautionary Statements: Avoid breathing vapors, wear protective gear, wash skin thoroughly after handling, use only outdoors or in well-ventilated area
Emergency Overview: Fumes are highly irritating and harmful to eyes, skin, and respiratory system

Composition / Information on Ingredients

Chemical Name: Sulfur Tetrachloride
Concentration: 100%
Impurities: Trace amounts of sulfur dichloride or chlorine possible
Molecular Weight: 169.87 g/mol

First Aid Measures

Eye Contact: Rinse cautiously with water for minutes, remove contact lenses if present, get immediate medical attention
Skin Contact: Remove contaminated clothing, rinse skin with water/shower for minutes, seek medical help
Inhalation: Move to fresh air, keep person at rest, provide oxygen if breathing is difficult, seek medical attention
Ingestion: Do not induce vomiting, rinse mouth with water, get medical attention immediately
Symptoms: Burning sensation, coughing, difficulty breathing, severe pain or irritation

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam (do not use water)
Specific Hazards: Releases toxic gases including hydrogen chloride, sulfur dioxide, and chlorine when heated
Protective Equipment: Self-contained breathing apparatus, full protective gear
Advice for Firefighters: Remove containers from fire area if safe, cool containers with flooding quantities of water from a distance, avoid water contact with chemical

Accidental Release Measures

Personal Precautions: Evacuate and ventilate area, wear full protective equipment, prevent vapor spread
Environmental Precautions: Avoid discharge into drains, soil, or water courses
Cleanup Methods: Absorb spillage with indifferent materials like dry sand, collect in covered containers for disposal, neutralize residues with lime or soda ash
Emergency Procedures: Notify authorities about large spills, restrict access until cleanup is done

Handling and Storage

Handling: Use only in chemical fume hood, avoid contact with eyes, skin, and clothing, wash hands before breaks and after work
Storage: Store tightly sealed in cool, dry, and well-ventilated area, keep away from water, moisture, and incompatible substances
Incompatibles: Metals, strong bases, organic materials, water, alcohols
Safe Transfer: Use corrosion-resistant transfer lines, check equipment for leaks

Exposure Controls and Personal Protection

Exposure Limits: ACGIH TLV: Not established, OSHA PEL: Not established
Engineering Controls: Chemical fume hood, local exhaust ventilation, closed system operation
Personal Protection: Wear chemical splash goggles, face shield, acid-resistant gloves, impervious clothing, and suitable respiratory protection (full-face respirator with acid gas cartridge)
Hygiene Measures: Do not eat, drink, or smoke near chemical, wash hands and face after handling, remove contaminated clothing immediately

Physical and Chemical Properties

Appearance: Colorless to yellow fuming liquid
Odor: Pungent, suffocating
Melting Point: -30°C
Boiling Point: 59°C
Density: 1.66 g/cm3 at 25°C
Solubility: Reacts violently with water
Vapor Pressure: 148 mmHg at 20°C
pH: Not applicable
Flash Point: Not flammable (releases toxic gas)
Partition Coefficient: Not determined

Stability and Reactivity

Chemical Stability: Decomposes on exposure to moisture or heat
Possible Reactions: Vigorous reaction with water releasing HCl and Cl2, forms sulfur dioxide
Incompatible Materials: Alkalis, alcohols, combustibles, water, strong oxidizers
Hazardous Decomposition: Chlorine gas, hydrogen chloride, sulfur dioxide, sulfur dichloride
Conditions to Avoid: Moisture, high temperatures, contact with metals

Toxicological Information

Acute Toxicity: Inhalation LC50 (rat): 160 ppm (4 hours), skin and eye corrosive
Routes of Exposure: Inhalation, ingestion, skin/eye contact
Effects: Severe irritation, burns, coughing, shortness of breath, gastrointestinal distress
Chronic Exposure: Risk of respiratory tract damage, possible sensitization
Symptoms: Pain, blistering, ulceration, pulmonary damage in severe cases

Ecological Information

Ecotoxicity: Toxic to fish and aquatic organisms due to hydrolysis forming hydrochloric acid and sulfur oxides
Persistence and Degradability: Hydrolyzes quickly in water to release hazardous products
Bioaccumulation: Does not persist, decomposes rapidly
Mobility in Soil: Likely to seep and react with soil moisture producing acidic products
Other Adverse Effects: Contamination can disrupt local ecosystems

Disposal Considerations

Disposal Methods: Collect and neutralize with appropriate alkaline agents under strict control, dispose in accordance with local/state/federal regulations
Contaminated Packaging: Dispose of as hazardous waste after triple rinse and neutralization
Environmental Precautions: Prevent release into environment, inform authorities if contamination occurs
Recommendation: Engage licensed hazardous waste disposal contractor for large or frequent disposals

Transport Information

UN Number: UN1827
Shipping Name: Sulfur Tetrachloride
Transport Hazard Class: 8 (Corrosive), 6.1 (Toxic)
Packing Group: I
Label Requirements: Corrosive, toxic, environmental hazard
Special Precautions: Avoid exposing cylinders to temperature fluctuations or impacts during transit, ensure containers are leak-proof
Regulatory Codes: Follow ADR/RID/IMDG/IATA guidelines for corrosive and toxic products

Regulatory Information

OSHA Status: Regulated hazardous chemical
SARA Title III: Listed as hazardous substance under Section 302/313
TSCA: Listed
EPA Regulations: Subject to hazardous substance reporting, accidental release reporting required
State/International Regulation: Subject to country-specific environmental, health, and transportation regulations