Chemical Name: Sodium 3-Nitrobenzenesulphonate
Chemical Formula: C6H4NO5SNa
CAS Number: 127-68-4
Synonyms: m-Nitrobenzenesulfonic acid, sodium salt; m-Nitrobenzenesulphonate sodium salt
Recommended Use: Laboratory reagent, chemical intermediate, dyestuff manufacturing
Supplier Information: Obtain supplier name, address, and emergency contact—local distributor or sourcing partner should provide details
Emergency Phone: Refer to supplier’s emergency line or local Poison Control
Classification: Acute toxicity (oral, dermal, inhalation), eye irritation, specific target organ toxicity—single exposure
GHS Label Elements: Warning symbol (exclamation mark); Signal word: Warning
Hazard Statements: Harmful if swallowed, harmful in contact with skin or if inhaled, causes serious eye irritation
Precautionary Statements: Avoid breathing dust, wash hands and exposed skin after handling, use in a well-ventilated area, wear protective gloves and eye protection
Potential Health Effects: Inhalation may cause coughing or irritation of respiratory tract, ingestion could result in gastrointestinal pain, contact with skin or eyes may trigger redness and discomfort
Environmental Hazard: Hazardous to aquatic life; avoid uncontrolled releases to soil or water
Chemical Identity: Sodium 3-Nitrobenzenesulphonate
Concentration: Typically >98% (by weight)
Impurities: May contain trace sodium salts of other sulfonic acids (<2%); negligible effect on hazard profile
CAS Number: 127-68-4
Molecular Weight: 225.16 g/mol
Inhalation: Move person to fresh air at once, monitor breathing and seek medical advice if symptoms persist. If breathing stops, give artificial respiration
Ingestion: Rinse out mouth thoroughly. Do not induce vomiting. Provide water to drink only if person is conscious. Seek immediate medical attention
Skin Contact: Remove contaminated clothing, wash skin generously with soap and water for at least 15 minutes. Seek medical attention if irritation develops
Eye Contact: Rinse eyes with gentle stream of water for at least 15 minutes, lifting upper and lower eyelids periodically. Remove contact lenses if possible. Seek prompt medical care
General Advice: Show this safety sheet to attending physician, keep victim warm and quiet
Flammability: Solid does not ignite easily. Finely divided dust can form explosive mixtures with air
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide (CO₂), or foam. Avoid direct powerful water jets that might spread powder
Specific Hazards: Decomposition can produce toxic gases such as nitrogen oxides and sulfur oxides
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear
Explosion Sensitivity: Dust may pose slight risk; avoid creating dust clouds in closed spaces
Other Notes: Prevent contaminated water runoff from entering waterways or sewers
Personal Precautions: Avoid contact with skin and eyes, avoid generating airborne dust, isolate area and provide ventilation
Protective Equipment: Gloves, eye protection, dust mask or respirator if dusting is significant
Methods for Clean-up: Use non-sparking tools, sweep up powder without stirring into the air, store in dry, labeled container for proper disposal
Environmental Precautions: Do not allow to drain into sewers, soil, or water bodies. Large spills notify appropriate safety and environmental agencies
Decontamination: Rinse area with water after initial collection of spilled material, dispose wash water appropriately
Handling: Handle in well-ventilated area, use local exhaust if dusts become airborne, avoid skin and eye contact, wear appropriate protective gear
Storage Conditions: Store in a tightly sealed original container, away from heat, direct sunlight, and moisture, at controlled room temperature
Storage Compatibility: Keep away from strong acids, oxidizing agents, and foodstuffs
Hygiene Measures: Wash hands after handling, do not eat or drink in work area, remove clothing if contaminated
Exposure Limits: No established occupational exposure limits specific to Sodium 3-Nitrobenzenesulphonate—follow general dust limits (e.g., OSHA PEL for nuisance dust: 15 mg/m³ total dust)
Engineering Controls: Use fume hood or local exhaust ventilation
Respiratory Protection: Use NIOSH-approved particulate respirator in poorly ventilated spaces or if dust becomes airborne
Hand Protection: Chemical-resistant gloves (such as nitrile or neoprene)
Eye Protection: Chemical splash goggles
Other Protection: Lab coat, long pants, closed shoes. Emergency eyewash and safety shower recommended in area
Appearance: Yellowish to brown crystalline solid
Odor: Odorless or may have faint aromatic note
Melting Point: Decomposes above 300°C
Boiling Point: Not applicable (decomposes)
Solubility: Freely soluble in water, very slightly soluble in alcohol and organic solvents
pH (1% aqueous solution): Typically 7–9
Vapor Pressure: Negligible at room temperature
Specific Gravity: Approximately 1.6 g/cm³
Molecular Weight: 225.16 g/mol
Flash Point: Not flammable
Bulk Density: Varies by particle size; typically 600–900 kg/m³
Chemical Stability: Stable under recommended storage conditions
Conditions to Avoid: Excessive heat, open flames, strong sunlight, moisture
Incompatible Materials: Strong oxidizers, acids, reducing agents
Decomposition Products: Toxic gases such as nitrogen oxides, sulfur oxides, and sodium fumes released at elevated temperatures
Hazardous Polymerization: Does not occur under normal handling and storage
Acute Toxicity: Data limited; oral LD50 (rat) estimated >2000 mg/kg
Skin Contact: May cause mild to moderate irritation
Eye Contact: Can produce irritation, redness, and watering
Inhalation: Dust may provoke coughing, sneezing, sore throat
Chronic Exposure: No confirmed studies on reproductive or carcinogenic effects specific to this compound. Extended or repeated exposure might aggravate existing conditions involving skin and respiratory system
Sensitization: No data supporting sensitization from routine use
Mutagenicity: No evidence in published literature
Ecotoxicity: Harmful to aquatic life in significant concentrations. LC50 (fish) and EC50 (daphnia) not well documented, but precaution needed due to nitro and sulfonate functional groups
Persistence and Degradability: Compound expected to show poor biodegradability due to aromatic ring and sulfonate substitution
Bioaccumulation Potential: Expected to be low due to good water solubility
Mobility in Soil: High mobility. Moves easily through soil with water flow
Other Adverse Effects: Avoid direct discharges; environmental authorities may have reporting requirements
Waste Disposal: Dispose as hazardous waste according to local, state, and national regulations. Do not allow material or rinse water to reach drains or natural waterways
Container Handling: Triple rinse emptied containers, remove labels, puncture if recycling permitted, otherwise manage as hazardous waste
Preferred Methods: Incinerate under controlled conditions or send to a licensed hazardous waste disposal firm
Regulatory Considerations: Inquire with local authorities for additional restrictions before landfill disposal
UN Number: Not assigned for this compound; may be transported under general chemicals regulations
Proper Shipping Name: Sodium 3-Nitrobenzenesulphonate
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: Not applicable
Marine Pollutant: Not regulated as marine pollutant, but do not discharge near aquatic environments
Special Precautions: Prevent package breakage and avoid conditions causing dust, keep dry during transit
Emergency Response: Refer to appropriate chemical guidelines for spill/leak procedures
TSCA (USA): Listed
EINECS (Europe): 204-862-9
REACH (EU): Check current status with supplier—may require Registration, Evaluation, Authorization under regional rules
SARA Title III (USA): Not listed as an extremely hazardous substance
WHMIS (Canada): Not specifically regulated
GHS Classification: Covered by general toxic, irritant, and environmental hazard categories
Other International Regulations: Not flagged for special handling by IATA, IMDG, ADR
Worker Protection: Refer to national exposure restrictions and worker safety codes. Maintain rigorous documentation and staff training on chemical hygiene
