Product Name: Sodium Xylene Sulfonate
Chemical Name: Sodium 3,5-xylene sulfonate
Synonyms: Sodium 3,5-dimethylbenzenesulfonate, SXS
CAS Number: 1300-72-7
Recommended Use: Surfactant, hydrotrope for industrial and household cleaning agents, textile processing, personal care formulations, metal processing
Supplier/Manufacturer: Chemical production and distribution companies specializing in industrial intermediates; contact information remains relevant for emergency communication, technical advice, and regulatory purposes
Emergency Contact Number: Emergency response hotlines provided by the supplier
GHS Classification: Not classified as hazardous under GHS criteria for most cases, but eye and skin irritant properties warrant careful use; risk of respiratory irritation if dust or mist forms
Label Elements: Signal word: Warning; Hazard pictogram: Exclamation mark; Hazard statements: Causes serious eye irritation, May cause respiratory irritation, Causes skin irritation
Precautionary Statements: Avoid breathing dust, do not get in eyes, on skin, or on clothing, use only outdoors or in a well-ventilated area
Health Hazards: Direct contact with eyes leads to pain and inflammation, skin contact causes mild to moderate irritation, accidental inhalation triggers coughing, shortness of breath, and possible throat soreness
Environmental Hazards: Large releases enter local ecosystems with possible adverse effects on aquatic organisms via increased chemical load and surfactancy
Chemical Identity: Sodium Xylene Sulfonate (C8H9SO3Na)
Concentration: Product purity commonly ranges from 35% to 40% in solution, up to 90% technical grade solids
Impurities: Trace levels of xylenesulfonic acid, sodium sulfate, and unreacted xylene, all limited by manufacturing specifications and quality control
Other Ingredients: Water serves as diluent in liquid solutions
Presence of Hazardous Components: None present at concentrations that meet classification thresholds for additional hazards
Inhalation: Remove person to fresh air, encourage slow deep breathing, provide medical attention if coughing or symptoms persist
Skin Contact: Wash affected area with plenty of water using mild soap, remove contaminated clothing, seek medical advice for persistent irritation
Eye Contact: Rinse continuously with clean water for fifteen minutes, hold eyelids open, avoid rubbing, consult medical professional if redness or pain continues
Ingestion: Rinse mouth thoroughly, do not induce vomiting, provide water to rinse residual chemical, get professional medical help without delay
Note to Physicians: Symptomatic treatment and supportive care recommended, no known antidotes; monitor for delayed irritation
Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide; recommended based on surrounding materials
Specific Hazards: Decomposition in intense heat may give off toxic gases such as sulfur oxides and sodium compounds
Fire-Fighter Protection: Wear full protective clothing and self-contained breathing apparatus, safeguard against splashes and fume inhalation
Firefighting Procedures: Contain runoff to prevent environmental contamination, cool unaffected containers with water, use equipment rated for chemical service
Explosion Sensitivity: Product shows low flammability and is not explosive under normal conditions
Personal Precautions: Wear chemical resistant gloves, goggles, coveralls, and appropriate respirator for dust or vapor
Environmental Precautions: Prevent material from entering storm drains, surface waters, and soil, minimize area of impact, report spills as per local regulations
Cleanup Methods: Contain leaked liquid or dry product using inert absorbents like sand, transfer to containers for disposal, flush residue with copious water after removal, ventilate area well
Decontamination: Wash down affected surfaces with water ensuring chemical is fully dispersed and neutralized to mitigate lingering risks
Handling: Utilize chemical splash goggles, gloves, and minimal exposure clothing, use local ventilation or extraction to limit airborne dust or vapors, avoid direct contact by maintaining standard hygiene practices
Storage: Store in tightly closed containers away from heat, incompatible products, direct sunlight, and moisture, keep at ambient temperature, always labeled clearly to aid fast identification during emergencies
Incompatibilities: Acids, oxidizers, strong bases, and reducing agents provoke reactions or degrade product quality
Storage Life: Stable for extended periods under controlled conditions, inspect containers regularly for leaks or deterioration
Occupational Exposure Limits: No established specific exposure limits for this chemical; keep airborne concentrations below nuisance dust guidelines (OSHA PEL 15 mg/m³ total dust for particulates)
Engineering Controls: Use local exhaust ventilation or process enclosure to minimize airborne concentrations
Personal Protective Equipment: Chemical resistant gloves (nitrile, neoprene), safety goggles or face shield, lab coat or chemical apron, respirator with particulate/organic vapor filter in poorly ventilated areas
General Hygiene: Wash hands before eating, drinking, or using restroom, remove and launder contaminated clothing, never eat or drink while handling chemical materials
Appearance: Clear to pale yellow liquid for solutions; white to off-white granular or powder solid
Odor: Slight aromatic or phenolic odor, easily masked
pH Value: 7–10 (10% solution in water)
Melting Point / Freezing Point: Decomposes above 400°C (technical solid); solutions freeze according to water content
Boiling Point: Above 100°C dependent on concentration
Solubility: Highly soluble in water due to salt structure
Density: Approximately 1.05–1.10 g/cm³ for solutions
Vapor Pressure: Negligible at room temperature
Partition Coefficient (n-octanol/water): Low; not expected to bioaccumulate
Evaporation Rate: Comparable to water for aqueous solutions
Chemical Stability: Product shows strong stability under standard shipping, storage, and handling conditions
Conditions to Avoid: High temperatures, prolonged exposure to acidic conditions, contact with oxidizing or reducing agents
Hazardous Decomposition Products: Sulfur dioxide, sodium oxides, and other sulfur-containing vapors may be released
Reactivity: Solution is relatively inert but reacts with highly alkaline or acidic substances to produce heat and sometimes hazardous gases
Polymerization: Does not undergo hazardous polymerization
Acute Toxicity: Oral LD50 (rat) estimated above 5,000 mg/kg; low systemic toxicity, irritation remains the main concern
Chronic Toxicity: Prolonged skin contact dries skin, rare cases of allergic reaction in sensitive persons
Inhalation Effects: Dust may trigger temporary respiratory discomfort, so exposure should be minimized
Eye Irritation: Significant redness, tearing, and discomfort reported in exposed individuals without prompt eye washing
Mutagenicity/Carcinogenicity: Long-term studies have not indicated significant risks of mutagenesis or carcinogenesis in tested exposure conditions
Additional Health Information: No connection identified between sodium xylene sulfonate exposure and reproductive toxicity or developmental effects, according to publicly available data
Aquatic Toxicity: Acute LC50 for fish estimated at 1,000–2,200 mg/L, showing low to moderate hazard at high concentrations; surfactant nature impacts surface tension and could disrupt aquatic life, including invertebrates
Persistence and Degradability: Readily biodegradable, breakdown products include non-persistent organic salts and dimethylbenzenesulfonate fragments
Bioaccumulation Potential: Minimal risk of bioaccumulation, observed low octanol-water partition coefficient
Environmental Mobility: Moves easily with water runoff and could reach groundwater; best kept contained and handled in engineered drainage areas
Other Adverse Effects: Potential to foam in water courses, which affects water quality and treatment processes
Waste Disposal Methods: Collect and transfer into clearly marked containers, dispose by incineration or permitted landfill after neutralization, follow all local and national regulations
Container Disposal: Empty packages thoroughly, rinse before recycling or disposal, avoid reuse for food or beverage storage
Special Handling Instructions: Do not flush into surface water or sewer without adequate treatment, consult environmental authorities for legal routes and reporting requirements
UN Number: Not regulated for most common forms, as substance poses low risk under transport situations; always refer to bulk MSDS and assess specific formulation hazards
Transport Hazard Class: Non-hazardous — falls under “Not Regulated” or “Not Dangerous Goods” for ground, air, and sea shipments
Packing Group: Not assigned
Special Precautions for Transport: Protect from physical damage or accidental leaks by using correct containers and closures, keep away from incompatible substances
Labeling Requirements: Standard chemical and identification labeling, including hazard pictograms if applicable for local rules
Global Inventories: Listed on main regulatory chemical inventories (TSCA, EINECS, DSL, AICS, ENCS, KECI, PICCS, IECSC)
OSHA Hazards: Eye and skin irritant; not acutely toxic or carcinogenic under US definitions
SARA Title III: Not subject to reporting requirements for Sections 302, 304, or 313 as a hazardous substance
RCRA Status: Not designated as hazardous waste by EPA; local requirements for handling and neutralization still apply
Labeling: Should include product name, risk/precautionary statements, pictograms as dictated by region; ensure up-to-date revision dates
Workplace Exposure: Adhere to Right-to-Know standards at all facilities, provide safety training and access to safety data for all workers handling chemical
Other Notes: Compliance remains vital to protect worker health, public safety, and environmental quality amidst ongoing product use across global industries
