Product Name: Benesulfonic Acid 1.5 Hydrate
Chemical Formula: C6H5SO3H · 1.5H2O
Synonyms: Benzene Sulfonic Acid Monohydrate, Benzenesulfonic Acid
CAS Number: 98-11-3
Manufacturer: Contact details typically found on product label
Emergency Contact: Refer to local poison control center or emergency response services
Recommended Use: Used as an intermediate in organic synthesis and chemical manufacturing
Restrictions: Not suitable for food, drug, or household applications
Classification: Corrosive to skin and eyes, harmful if swallowed or inhaled
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; may cause respiratory irritation
Pictograms: Corrosion, exclamation mark
Precautionary Statements: Avoid breathing dust or vapors, wear protective gloves and eye protection, use only in well-ventilated areas
Health Effects: Contact leads to redness, blistering, and pain; inhalation may induce coughing and throat irritation
Target Organs: Skin, eyes, respiratory system
Chemical Name: Benesulfonic Acid 1.5 Hydrate
Percentage: Approximately 100% by weight
Impurities: No significant impurities contributing to classification
Molecular Weight: 176.22 g/mol
Ingredient Synonyms: Benzenesulfonic Acid Hydrate
Inhalation: Move person to fresh air immediately; provide oxygen if breathing is difficult; seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with water for 15 minutes; seek medical aid for persistent irritation
Eye Contact: Flush eyes with water for 15 minutes while lifting eyelids; immediate medical attention is necessary
Ingestion: Rinse mouth with water; do not induce vomiting; have person sip water if able; call poison center or doctor
Special Precautions: First aid responders should avoid direct contact using gloves and safety goggles
Suitable Extinguishing Media: Water spray, carbon dioxide, dry chemical, foam
Unsuitable Media: Avoid direct jet streams that may spread material
Hazardous Combustion Products: Sulfur oxides, carbon oxides
Protective Equipment: Firefighters should wear self-contained breathing apparatus and chemically resistant protective clothing
Fire Hazards: Material does not burn easily but may decompose at high temperatures and emit toxic vapors
Recommendations: Evacuate area, contain runoff, cool exposed containers
Personal Precautions: Evacuate unnecessary personnel, ensure adequate ventilation, avoid inhalation or contact
PPE: Use chemical-resistant gloves, goggles or face shield, and protective clothing
Spill Containment: Prevent further spillage if safe to do so, contain spilled liquid with sand or inert absorbent
Cleanup Methods: Scoop up spill using non-sparking tools, store in a properly labeled container for disposal
Environmental Precautions: Prevent entry of material into waterways, drains, or soil
Safe Handling: Avoid dust generation, use with local exhaust ventilation, do not eat or drink near product
Hygiene Practices: Wash hands thoroughly after handling, change contaminated clothing
Storage Conditions: Store tightly sealed in a cool, dry, well-ventilated area, away from incompatible substances such as strong bases, oxidizers, and reducing agents
Packaging Materials: Use corrosion-resistant containers with sealed lids
Incompatibilities: Avoid reactive contact with alkalis and strong oxidizers
Exposure Limits: No specific occupational exposure limits established; minimize exposure to dust and vapors
Engineering Controls: Use chemical fume hoods, local exhaust systems, and adequate general room ventilation
Personal Protective Equipment: Chemical-resistant gloves (e.g. nitrile or neoprene), lab coat or apron, safety goggles, face shield
Respiratory Protection: Use NIOSH-approved respirators for handling powders or if ventilation is inadequate
Environmental Controls: Prevent release into environment using closed processes or proper filtration
Appearance: White to off-white crystalline powder
Odor: Faint aromatic odor
Odor Threshold: Not determined
pH (1% solution): 1–2
Melting Point: Approximately 97°C
Boiling Point: Decomposes before boiling
Flash Point: Not flammable
Solubility: Readily soluble in water
Vapor Pressure: Negligible at room temperature
Density: About 1.6 g/cm³ (hydrates may alter exact value)
Partition Coefficient (Kow): Not determined
Decomposition Temperature: Decomposition can occur above 180°C
Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts strongly with bases and oxidizers
Conditions to Avoid: High temperatures, exposure to moisture, incompatible chemicals
Hazardous Decomposition Products: Produces sulfur dioxide and other sulfur oxides when heated to decomposition
Polymerization: Hazardous polymerization does not occur under normal usage
Acute Toxicity: Harmful if swallowed, inhaled, or absorbed through skin
Skin Corrosion/Irritation: Causes rapid blistering, redness, and chemical burns on contact
Eye Damage/Irritation: May cause severe, irreversible damage including blindness
Respiratory Sensitization: Inhalation can cause coughing, burning sensation, and shortness of breath
Chronic Effects: Prolonged exposure can result in tissue damage, respiratory tract sensitization
Carcinogenicity: No classification by IARC, NTP, or OSHA
Mutagenicity and Reproductive Toxicity: No reliable data available indicating specific effects on DNA or reproduction
Aquatic Toxicity: Harmful to aquatic organisms; may cause long-term adverse effects in aquatic environments
Persistence and Degradability: Readily biodegradable under aerobic conditions
Bioaccumulative Potential: Low, due to high water solubility
Mobility in Soil: Likely to migrate through soil and contaminate groundwater due to solubility
Other Adverse Effects: Acidification of water or soil can impact local flora and fauna
Waste Disposal Methods: Dispose as hazardous waste in accordance with federal, state, and local regulations
Contaminated Packaging: Rinse containers thoroughly, dispose as hazardous chemical waste
Special Precautions: Do not discharge to sewers or natural waterways
Disposal Guidance: Use licensed contractors experienced with corrosive chemical disposal
UN Number: UN2585
Proper Shipping Name: Benzenesulfonic Acid Solution
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: II
Label: Corrosive
Environmental Hazards: Avoid exposure to environment during transport
Special Precautions for Transport: Transport in upright, sealed, clearly labeled containers; emergency response guide numbers should accompany shipment
OSHA Status: Regulated as hazardous
TSCA: Listed on the United States TSCA Inventory
SARA Title III: Not specifically listed, but due to corrosivity, subject to reporting requirements
REACH Registration: Manufacturer or importer is responsible for appropriate registration in the EU
California Proposition 65: Not listed
Other National or International Regulations: Product labeling and handling requirements align with GHS classification for corrosive substances; check local regulations for further restrictions or reporting obligations
