© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: Benzenesulfonyl chloride
Chemical Formula: C6H5SO2Cl
Appearance: Clear to pale yellow oily liquid with an acrid, sharp odor
Common Uses: Often shows up as a sulfonating agent in organic synthesis, crucial for making dyes, pharmaceuticals, and herbicides
Other Names: Benzene sulfonyl chloride, phenylsulfonyl chloride
Hazard Class: Corrosive to skin and eyes
Health Risks: Inhalation or skin contact causes burning, tissue destruction, and potential lung injury
Environmental Risks: Toxic to aquatic life—drains or sewers aren’t a safe destination
Pictograms: Skull and crossbones, corrosion symbol
Routes of Exposure: Absorption through skin, inhalation of mist, accidental ingestion
Active Ingredient: Benzenesulfonyl chloride (typically over 99%)
Impurities: Small traces of sulfur dioxide or monochlorobenzene from manufacturing process
Eye Contact: Immediate, plentiful flushing with water for at least 15 minutes
Skin Contact: Remove contaminated clothing, rinse skin, and use soap
Inhalation: Get to fresh air, watch for coughing or breathing problems; potentially seek medical attention
Ingestion: Rinse mouth, avoid inducing vomiting; medical evaluation is vital
General Advice: Anyone helping should protect themselves from contact
Fire Hazards: Emits hazardous gases such as hydrogen chloride, sulfur oxides; reacts with water to release fumes
Suitable Extinguishing Media: Dry chemical powder, CO2, do not use water directly
Special Protective Equipment: Firefighters need chemical splash suit, self-contained breathing apparatus
Specific Risks: Leaking containers may ignite nearby combustible material; runoff could corrode containment structures
Personal Precautions: Use chemical goggles, impervious gloves, and face shield
Environmental Precautions: Don’t dump on the ground; block entry to sewers or waterways
Cleanup Methods: Use absorbent pads or inert material (sand, vermiculite), collect in sealed container
Ventilation: Boost air movement to limit vapor accumulation; stay upwind of spills
Disposal: Dispose all waste according to chemical regulations to avoid harm downstream
Handling: Work with in fume hood; always pour slowly, keeping the container tightly closed
Storage: Keep cool, dry, and in original labeled container away from incompatible materials (water, strong bases)
Separation: Park it far from oxidizers, acids, and food areas
Container Material: Glass or non-reactive plastics offer best long-term stability
Workplace Controls: Use process enclosure, local exhaust, or both
Personal Protective Equipment: Safety goggles, chemical resistant gloves, protective clothing, face shield
Respiratory Protection: NIOSH-approved respirator for vapors or mists
Hygiene: Wash hands before eating or leaving workspace, change contaminated clothing promptly
Boiling Point: Around 252°C
Melting Point: -11°C
Vapor Pressure: Low at ambient temperatures
Solubility: Reacts with water, not soluble; dissolves in organic solvents like ether, benzene
Odor: Sharp, biting, similar to burning plastic
Density: 1.38 g/cm³
Appearance: Colorless to pale yellow oily liquid
Chemical Stability: Breaks down in presence of water or moisture; forms hydrochloric acid vapors
Incompatible Materials: Water, strong bases, oxidizing agents
Dangerous Reactions: Water triggers violent hydrolysis, heat, and toxic gas
Acute Exposure: Severe burns to skin, eyes, mucous membranes
Chronic Exposure: Prolonged or repeated contact aggravates dermatitis, respiratory irritation
Inhalation: Missed ventilation or spilled material leads to breathing problems, lung edema in worst cases
Toxicity Data: Animal testing shows corneal injury from ocular exposure, oral toxicity ranges from moderate to high depending on dose
Aquatic Toxicity: Spills poison fish or aquatic organisms, even at low levels
Persistence: Hydrolyzes in soil or waterways, still leaves residues risky for local wildlife
Mobility: Reacts quickly but can move short distances before breaking down, especially if released near water
Disposal Method: Burn organic material in sealed incinerator with scrubber for acidic gases
Waste Handling: Use certified chemical waste handlers; don’t throw with regular trash
Packaging Disposal: Decontaminate containers, crush if possible to avoid reuse, send to approved disposal facilities
Transport Category: Hazardous material—requires labeling for corrosivity and inhalation hazard
Container Guidelines: Use leakproof, vented, and strong containers to prevent accidental exposure
Shipping Practices: Keep upright, separate from food, and shield from heat or open flames; carriers should prepare for accidental releases en route
Workplace Limits: Regulated under hazardous workplace chemicals law in many countries
Environmental Rules: Restrictions on discharge or disposal into water, air, or regular landfill
Label Requirements: Mandatory warning labels for toxicity, skin burns, and environmental risk
Record-Keeping: Facilities need to document amounts handled, spill responses, and disposal records as part of compliance checks
