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Product Name: Outros Tiocompostos Orgânicos
Chemical Family: Organic sulfur compounds
Synonyms: Thiols, thioethers, mercaptans
Recommended Use: Laboratory chemicals, industrial intermediates, chemical synthesis
Supplier: Major chemical distributors and research suppliers globally
CAS Numbers: Multiple; includes common compounds like ethanethiol (75-08-1), dimethyl sulfide (75-18-3), benzenethiol (108-98-5), methyl mercaptan (74-93-1)
Classification: Flammable liquids, acute toxicity, skin and eye irritation, environmental hazards
Label Elements: GHS flammable, toxic, and environmental pictograms
Hazard Statements: Highly flammable, toxic if inhaled, may cause severe skin burns and eye damage, dangerous to aquatic life
Precautionary Statements: Avoid breathing vapors, use in well-ventilated zones, keep away from heat and open flames, wear protective gear
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Symptoms: Headache, nausea, respiratory distress, skin and eye burns, dizziness
Main Components: Aliphatic and aromatic thiols, thioethers, persulfides
Concentration Ranges: Varies by compound, often 90–100% in pure laboratory materials
Impurities: Trace sulfur compounds, solvents from synthesis, water
Additives: Stabilizers to prevent degradation in certain formulations
Toxic Constituents: Some compounds contain residual hydrogen sulfide or other volatile impurities
Eye Contact: Rinse immediately with plenty of water for several minutes, hold eyelids open, seek medical attention
Skin Contact: Remove contaminated clothing, wash skin with soap and water, consult a doctor if irritation continues
Inhalation: Move person to fresh air, support breathing as needed, seek immediate medical help for difficulty breathing
Ingestion: Rinse mouth, do not induce vomiting, call poison control or medical provider
General Advice: Avoid direct rescue without protection, prioritize personal safety
Suitable Extinguishing Media: Carbon dioxide, dry chemical, foam
Unsuitable Extinguishing Media: Water jets can spread flames
Hazards from Combustion: Produces toxic gases like sulfur oxides, carbon monoxide, hydrogen sulfide
Special Protective Equipment: Self-contained breathing apparatus, chemical-resistant clothing
Advice for Firefighters: Use water spray to cool containers, evacuate area if large scale fire
Personal Precautions: Evacuate area, avoid breathing fumes, ventilate area, remove ignition sources
Protective Equipment: Chemical splash goggles, gloves, NIOSH-approved respirator for fumes
Clean-up Methods: Contain and collect with inert absorbent, place in sealed container for disposal, clean residue with authorized solvent
Environmental Precautions: Prevent runoff into soil, water courses, sewers
Safe Handling: Work in chemical fume hood, avoid skin and eye contact, use spark-proof tools, keep containers closed
Storage Recommendations: Store in cool, dry, well-ventilated spot away from sunlight, oxidizers, acids, bases
Incompatible Materials: Strong oxidizers, strong acids, alkalis, halogens
Packaging: Tightly sealed glass or high-density polyethylene containers
Special Precautions: Monitor for peroxide formation, check for leaks or damage
Exposure Limits: Varies by specific compound; for example, ACGIH TLV for methyl mercaptan is 1 ppm (skin), others have similar low thresholds
Engineering Controls: Use fume hoods, explosion-proof ventilation, closed systems
Personal Protective Equipment: Chemical-resistant gloves (butyl, neoprene), splash goggles, laboratory coats, face shield for large volumes
Respiratory Protection: Full-face respirator with organic vapor cartridge in case of inadequate ventilation
Hygiene Measures: Wash hands and face thoroughly, remove contaminated clothing immediately
Appearance: Colorless to yellowish liquids or solids
Odor: Pungent, garlic-like or rotten cabbage smell typical of thiols and mercaptans
pH: Not relevant for neat organic chemicals, but some acidic
Boiling Point: Ranges from 35°C to over 200°C depending on structure
Melting Point: -128°C to above room temperature
Vapor Pressure: Often high for low molecular weight compounds
Solubility: Low to moderate in water, high in organic solvents
Flash Point: Frequently below room temperature for lighter members
Autoignition Temperature: 220°C to 450°C
Density: 0.8–1.2 g/cm³
Stability: Stable under recommended conditions, sensitive to air and light in some cases
Reactive Hazards: Reacts with oxidizers, halogens, concentrated acids
Hazardous Decomposition: Sulfur oxides, hydrogen sulfide, carbon monoxide, carbon dioxide
Polymerization: Some are prone to exothermic polymerization if proper inhibitors are not used
Conditions to Avoid: Heat, open flame, static discharge, contact with strong oxidizers
Acute Toxicity: Many are toxic by inhalation, ingestion, or skin contact; LC50s often in low mg/L range for inhaled gases
Skin Corrosion/Irritation: Produces burns, blisters, reddening
Eye Damage/Irritation: Severe irritation, risk of permanent damage
Respiratory Effects: Cough, sore throat, difficulty breathing, pulmonary edema in extreme cases
Chronic Exposure Risks: Possible nervous system, kidney, or liver damage with repeated exposure; potential carcinogenicity data limited
Other Effects: Some associated with mutations and reproductive toxicity in animal studies
Toxicity to Aquatic Life: Harmful, sometimes extremely toxic to fish and aquatic invertebrates
Persistence and Degradability: Varies; some degrade rapidly, others persist under anaerobic conditions
Bioaccumulation Potential: Typically low to moderate, but varies by structure
Mobility in Soil: Volatile thiols tend to evaporate, but some persist and migrate to groundwater
Other Environmental Effects: May contribute to taste and odor issues in water; significant sulfur cycling impact
Disposal Methods: Treat as hazardous waste, incinerate with flue gas scrubbing, avoid landfill where vapor release could occur
Special Instructions: Follow local and national regulations for organic sulfur waste
Packaging for Disposal: Unbreakable, sealed containers labeled with content and hazard symbols
Contaminated Packaging: Handle as chemical waste, do not reuse
UN Number: Depends on specific thiocompound, typical values include UN1992, UN2810, UN1230 for flammable/ toxic organic chemicals
Proper Shipping Name: Thiols, Thioethers, Organic Sulfur Compounds, n.o.s.
Transport Hazard Class: Flammable liquid, toxic substances
Packing Group: II or III, depending on flash point and toxicity
Environmental Hazard: Classified as Marine Pollutant for many members
Special Precautions: Mark with hazard pictograms, keep away from food cargo, ventilate transport areas
Workplace Exposure Limits: OSHA PEL, ACGIH TLV, national exposure limits set for major compounds
TSCA / REACH Status: Listed for industrial chemicals; safety data required for transport and storage
Hazard Communication Rules: GHS-compliant labeling and training required for handling
Other Regulations: Subject to hazardous waste management, spill response, air emission controls
Community Right-to-Know Reporting: Often included on SARA 313 or equivalent national lists
