Product Name: Phenolsulfonic Acid, 65% solution in water
Synonyms: Benzenesulfonic acid, monohydrate, Sulfonic acid, phenol, 65% aqueous solution
CAS Number: 98-67-9
Recommended Uses: Laboratory reagent, synthesis intermediate, catalyst in chemical processes
Manufacturer: Supplier details available upon request, emergency contact information displayed on container label
GHS Classification: Corrosive to metals, Causes severe skin burns, Causes serious eye damage, Harmful if swallowed, Acute toxicity (oral, dermal), Environmental hazard
Hazard Statements: Causes severe burns to skin and eyes, May cause respiratory irritation, Harmful if ingested or inhaled, Environmental risks with improper disposal
Pictograms: Corrosive symbol, Exclamation mark, Environmental hazard
Signal Word: Danger
Precautionary Statements: Avoid skin and eye contact, Avoid inhalation, Do not eat or drink around material, Use only in areas with proper ventilation, Wear protective gear, Do not release to environment
Chemical Name: Phenolsulfonic Acid
Concentration: 65%
CAS Number: 98-67-9
Water: Balance of solution
Impurities: Trace levels of phenol and related compounds possible depending on synthesis, potential presence of sodium ion contaminants from manufacturing vessel
Inhalation: Move individual to fresh air, provide oxygen if breathing difficult, seek immediate medical attention
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for at least 15 minutes, do not delay, seek medical attention for burns or irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, get medical assistance right away
Ingestion: Rinse mouth with water, never induce vomiting, seek immediate medical assistance, give nothing by mouth to unconscious person
Most Important Symptoms: Pain, redness, blistering, severe irritation or burns to any exposed mucous membrane
Suitable Extinguishing Media: Use dry chemical powder, water spray, alcohol-resistant foam, or carbon dioxide
Unsuitable Media: Avoid direct water jet which may cause violent splattering
Specific Hazards: May emit toxic fumes under fire conditions including SOx, phenol, and other irritants
Special Equipment: Firefighters should use self-contained breathing apparatus and acid-resistant protective clothing
Instructions: Cool exposed containers with water mist, contain runoff, avoid inhalation of gases released by heating
Personal Precautions: Evacuate area, ventilate, use personal protective equipment such as gloves, goggles, acid-resistant clothing
Environmental Precautions: Prevent from reaching sewers, surface water, groundwater, contain spill with diking material
Spill Clean-Up Methods: Neutralize with lime or soda ash, absorb with inert material (sand or earth), collect in labeled waste containers, dispose in line with local regulations
Decontamination: Wash spill area thoroughly with plenty of water after removal of material
Handling: Use only in well-ventilated areas, avoid contact with skin, eyes and clothing, avoid inhaling vapors or mists, do not ingest, use acid-resistant gloves and equipment
Storage: Keep container tightly closed in cool, dry, well-ventilated place, store away from incompatible materials such as bases, oxidizers, strong reducing agents, protect from sunlight and moisture
Storage Containers: Use containers made from compatible materials like glass or certain plastics, label containers clearly and keep upright
Exposure Limits: No established limit for solution, workplace controls to minimize exposure still needed, use engineering controls such as fume hood
Engineering Controls: Use local exhaust ventilation in workspaces, maintain adequate air flow, install chemical fume scrubbers if necessary
Personal Protective Equipment: Chemical-resistant gloves (nitrile, PVC), full face shield or goggles, lab coat or suit, closed shoes, use of respirator if ventilation inadequate
Hygiene Measures: Wash hands before eating, remove contaminated clothing right away, do not reuse contaminated gear until washed
Form: Liquid
Color: Pale yellow to brownish
Odor: Sharp, characteristic phenolic smell
pH: Typically below 1 (strongly acidic)
Boiling Point: Approx. 100–110 °C (dependent on water concentration)
Melting Point: Not applicable (solution)
Solubility: Miscible with water
Density: About 1.22 g/cm³ at 20 °C
Vapor Pressure: Not available for solution
Flash Point: Not available
Explosive Properties: Not explosive, may decompose at high temperatures
Chemical Stability: Stable under recommended storage conditions, will slowly absorb moisture from air
Possible Reactions: Vigorous reaction with strong bases, strong oxidizers, risk of exotherm with contact to reactive metals or reducing agents
Conditions to Avoid: Excessive heat, moisture, incompatible materials, strong oxidizers, bases, direct sunlight for extended periods
Hazardous Decomposition: Upon decomposition, may release toxic and corrosive gases such as sulfur oxides, phenolic compounds, and vapors
Acute Toxicity: Corrosive to skin, eyes, mucous membranes, may cause significant damage with direct contact
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Burning pain, blistering, ulcers, eye damage, respiratory distress with inhalation, systemic toxicity possible if ingested
Chronic Effects: Extended exposure can lead to dermatitis, respiratory system damage, sensitization possible with repeated contact
LD50 (oral, rat): 640 mg/kg (for phenolsulfonic acid, indicative value)
Carcinogenicity: Not classified as carcinogenic by IARC/OSHA/NTP
Toxicity: Harmful to aquatic life with lasting effects, risk for bioaccumulation in water systems, high acidity disrupts local pH
Persistence and Degradability: Slowly biodegradable, remains in water systems without proper treatment
Mobility in Soil: High mobility due to water solubility, can move rapidly in case of leak or spill
Bioaccumulation Potential: Low for major component, may pose risk for aquatic organisms through pH and toxicity
Other Harmful Effects: Potential to corrode pipes, concrete, environmental hazards from chlorination by-products if mixed with water treatment facilities
Waste Disposal: Dispose as hazardous chemical waste according to local and national regulations, do not pour down drain, consult licensed professional for chemical waste collection
Container Disposal: Triple rinse containers before disposal, puncture and dispose in line with laws regarding hazardous chemical packaging
Precautions: Neutralize before disposal only in approved and permitted facilities, do not mix with incompatible materials in waste
UN Number: 2585 (corrosive liquid, acidic, organic, n.o.s.)
Proper Shipping Name: Corrosive liquid, acidic, organic, n.o.s. (contains phenolsulfonic acid)
Transport Hazard Class: 8 (corrosive substances)
Packing Group: II
Environmental Hazards: Marine pollutant
Special Transport Precautions: Use sealed, labeled HDPE or glass containers, keep upright, handle with care to avoid leaks, transport according to ADR/RID/IMDG/IATA rules
Classification and Labeling: Follows GHS/CLP rules for corrosives, country-specific regulations may apply regarding permitted volumes and workplace monitoring
Inventory Status: Listed in US TSCA, EU REACH, Canada DSL/NDSL, Japan ENCS, and other international chemical inventories
Workplace Controls: Subject to OSHA Hazard Communication Standard requirements, training and labeling required, regular health and safety audits recommended
Environmental Regulations: Covered under water pollution, hazardous substance/waste, chemical accident prevention acts in most countries, restrictions may apply in sensitive zones
Other Statutory Limitations: Review local workplace exposure standards and waste disposal codes for corrosive and environmentally hazardous substances
