Chemical Name: 4-Phenolsulfonic Acid Potassium
Synonyms: Potassium p-phenolsulfonate, Potassium 4-hydroxybenzenesulfonate
CAS Number: 139-88-8
Product Codes: Varies by supplier
Recommended Use: Chemical intermediate, dye manufacture, laboratory reagent
Manufacturer Details: Contact relevant supplier for address and emergency number
Emergency Telephone: Refer to supplier or regional poison center
Restrictions on Use: Not intended for food or drug purposes
Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Acute aquatic toxicity (Category 3)
GHS Label: Exclamation mark
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation, harmful if inhaled, may cause respiratory irritation, harmful to aquatic life
Precautionary Statements: Wear protective gloves and eye protection, avoid breathing dust, wash thoroughly after handling, avoid release to the environment
Symptoms: Redness, pain, watering of eyes, itching or burning at site of contact, coughing, sore throat if inhaled
Chemical Formula: C6H5KO4S
Main Ingredient: 4-Phenolsulfonic Acid Potassium (purity ≥98%)
Impurities: Phenolsulfonic acid (<1%), moisture (<1%)
Other Additives: No other ingredients present at levels classified as hazardous by current regulations
General Measures: Move away from exposure, remove contaminated clothing and rinse affected areas thoroughly
Inhalation: Move to fresh air, monitor breathing, give artificial respiration if needed, seek medical attention
Skin Contact: Wash skin with soap and plenty of water for at least 15 minutes, consult physician if irritation develops
Eye Contact: Flush with large amounts of water for at least 15 minutes, lifting eyelids occasionally, get medical help promptly
Ingestion: Rinse mouth, do not induce vomiting, call poison control or medical professional immediately
Suitable Extinguishing Media: Dry chemical, carbon dioxide, water spray, foam
Unsuitable Extinguishing Media: High-pressure water jets may spread spilled material
Specific Hazards: Decomposes to release toxic fumes including sulfur oxides and potassium oxides
Special Protective Equipment: Wear full protective clothing and self-contained breathing apparatus
Fire-Fighting Instructions: Evacuate area and keep upwind, cool containers with water spray, avoid run-off that enters drains
Thermal Decomposition Products: Sulfur compounds, phenolic compounds, potassium compounds
Personal Precautions: Use personal protective equipment, avoid breathing dust, ensure adequate ventilation
Environmental Precautions: Prevent release into waterways, sewers or soil, contain spillage using absorbent materials
Cleanup Methods: Sweep up and place in suitable, closed containers for disposal, decontaminate area with water and detergent
Reporting: Notify authorities in accordance with local regulations, especially for large spills
Safe Handling: Avoid unnecessary exposure, handle with care to prevent spills, keep away from incompatible substances like strong oxidizers
Technical Measures: Work in ventilated areas, avoid dust generation
Hygiene Practices: Wash hands and exposed skin thoroughly after handling, prohibit eating, drinking, or smoking
Storage Requirements: Store in a cool, dry, well-ventilated area, keep container tightly closed, segregate from food and incompatible chemicals
Storage Temperature: Keep at ambient temperature, protected from excessive heat and moisture
Occupational Exposure Limits: No established limits for this compound; minimize exposure through general controls
Engineering Controls: Use local exhaust ventilation to prevent airborne contamination, provide safety showers and eyewash stations nearby
Personal Protective Equipment: Wear chemical resistant gloves (nitrile or PVC recommended), protective goggles or face shield, lab coat or coveralls
Respiratory Protection: Use particle filter respirator if dust generated or ventilation inadequate
Environmental Controls: Prevent release to the environment through engineered containment measures
Appearance: Off-white to light yellow crystalline powder
Odor: None or faint phenolic
pH (1% solution): 3.0 - 4.0
Melting Point: Decomposes above 250 °C
Solubility: Readily soluble in water, low solubility in most organic solvents
Boiling Point: Not applicable (decomposes)
Density: Approximately 1.7 g/cm3
Vapor Pressure: Negligible
Partition Coefficient (log Kow): Not determined
Odor Threshold: Not determined
Evaporation Rate: Not relevant
Chemical Stability: Stable under normal storage and handling conditions
Conditions to Avoid: High temperatures, due to decomposition risk
Materials to Avoid: Strong oxidizing agents, bases
Hazardous Decomposition: Produces sulfur oxides and phenolic derivatives on heating
Polymerization: Not expected under normal conditions
Routes of Exposure: Inhalation, skin or eye contact, ingestion
Acute Effects: Causes irritation to eyes, skin, respiratory tract, may be harmful if inhaled or swallowed
Chronic Effects: Prolonged exposure may lead to dermatitis or other skin sensitization
Symptoms of Overexposure: Irritation of mucous membranes, coughing, redness or tearing of eyes, nausea
Animal Testing: Limited data on LD50; structurally related compounds show moderate toxicity
Carcinogenicity: Not listed by IARC, NTP, OSHA as carcinogenic
Mutagenicity and Reproductive Toxicity: No conclusive data for this compound
Aquatic Toxicity: Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Mobility in Soil: Likely to be highly mobile due to water solubility
Persistence: Expected to break down slowly in the environment, primarily through microbial activity
Bioaccumulation Potential: Low, due to moderate water solubility and low log Kow
Other Ecological Effects: Careless disposal may disrupt local water quality, affect aquatic invertebrates and plant life
Waste Disposal Methods: Dispose of contents and container in accordance with local, regional, national regulations, incinerate only in approved installations, do not dump in drains or waterways
Contaminated Packaging: Rinse thoroughly before recycling or disposal, treat rinse as hazardous waste
Special Precautions: Avoid landfill whenever possible, consult environmental agency if unsure about local codes
UN Number: Not assigned
Shipping Name: Not classified as hazardous during transport under most regulatory frameworks
Transport Hazard Class: Not regulated
Packing Group: None
Special Transport Precautions: Store containers upright and secure, protect from mechanical shock, prevent accidental release during transport
Marine Pollutant: Not listed as marine pollutant, prevent runoff into waterways
Chemical Inventory: Listed in major chemical inventories such as TSCA, EINECS
OSHA Hazard Communication: Classified as hazardous under OSHA Hazard Communication Standard
EPA Regulations: Not specifically regulated as a hazardous waste but handle according to general hazardous chemical protocols
Workplace Control: Mandates reporting for significant spills, safety data sheets must be available at workstations
Label Requirements: GHS-compliant hazard and precautionary statements, supplier identification, recommended PPE
National and Local Regulations: Follow all applicable laws regarding use, storage, and disposal, observe community right-to-know requirements
