Product Name: 5-Amino-2-Chlorotoluene-4-Sulphonic Acid
Synonyms: 2-Chloro-5-amino-4-methylbenzenesulphonic acid, 4-Sulfo-2-chloro-5-aminotoluene
Chemical Formula: C7H8ClNO3S
CAS Number: 88-51-7
Intended Use: Intermediate for dyes and pigments, used in organic synthesis, relevant in specialty chemicals.
Supplier: Check the bag or container label for up-to-date contact information.
Emergency Telephone: Provided by local supplier or facility regulations.
Classification: Eye irritation, Skin sensitizer, Potential aquatic toxicant.
Signal Word: Warning
Hazard Pictograms: Irritant (exclamation mark)
Hazard Statements: May cause skin and eye irritation; breathing dust or powder may result in coughing or discomfort; may harm aquatic life with prolonged effects.
Precautionary Statements: Avoid contact with skin, eyes, and clothing; wear protective gear; use only in well-ventilated areas; keep out of waterways and drains.
Other Hazards: Dust can build up in the air during transfer, avoid generating mists.
Chemical Name: 5-Amino-2-Chlorotoluene-4-Sulphonic Acid
Concentration: Approximately 97-99% pure
Additives/Impurities: Water content below 2%, trace amounts of related aromatic sulfonic acids
CAS Number: 88-51-7
EINECS Number: 201-837-2
Molecular Weight: 221.67
Inhalation: Move to fresh air, seek medical attention if breathing difficulty continues, support breathing if necessary.
Skin contact: Wash thoroughly with plenty of water and mild soap for at least fifteen minutes, remove contaminated clothing, seek medical advice if irritation persists.
Eye contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if possible, continue rinsing and get prompt medical help.
Ingestion: Rinse mouth with water if conscious, do not induce vomiting, seek immediate medical attention.
Most Important Symptoms: Eye and skin redness or discomfort, respiratory irritation, possible allergic response on skin
Notes for Physician: Treat symptomatically; product lacks chronic toxicity data but precaution supports observation.
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or CO2 for small fires.
Unsuitable Extinguishing Media: Avoid high-pressure water streams that may spread dust.
Hazardous Combustion Products: May produce chloride, nitrogen oxides, sulfur oxides, toxic and corrosive vapors.
Firefighter Protection: Wear self-contained breathing apparatus; full gear with chemical-resistant suits advised in case of dust or fume risk.
Special Procedures: Cool closed containers with water; stay upwind to avoid hazardous fumes.
Explosion Risks: Product is not classified as explosive; avoid accumulation of dust in confined areas.
Personal Precautions: Use dust mask, goggles, and chemical-resistant gloves; ventilate area; keep unprotected people from exposure.
Environmental Precautions: Prevent product from entering sewers, streams, or soil; notify authorities in case of large spill.
Methods for Cleanup: Carefully sweep or scoop up and place in secure labeled containers for recovery or disposal; avoid raising dust; decontaminate area with copious water if needed.
Reference to Other Sections: See Sections on PPE and Disposal for further details.
Safe Handling: Handle in well-ventilated areas, avoid breathing dust, wash hands and face after handling, prevent spills and dust formation.
Storage Requirements: Store in sealed containers; keep cool, dry, and well ventilated; keep away from incompatible substances like oxidants and strong acids.
Special Provisions: Keep containers tightly closed, label properly, store away from food and drinks; maintain integrity of packaging.
Exposure Limits: No established occupational exposure limits; follow standard industrial hygiene practices.
Engineering Controls: Employ local exhaust ventilation and general ventilation during handling;
Eye Protection: Chemical splash-proof goggles.
Skin Protection: Chemical-resistant gloves (nitrile or neoprene) and lab coat.
Respiratory Protection: Wear dust respirator in dust-generating tasks or poorly ventilated places.
Hygiene Measures: Remove contaminated clothing, wash hands after use, do not eat, drink, or smoke in processing areas.
Appearance: Beige to pale yellow crystalline powder.
Odor: Faint, aromatic.
Odor Threshold: Data not available.
pH: 2.5–4.0 (aqueous solution, 1%).
Melting Point: 253-257°C
Boiling Point: Not applicable (decomposes).
Flash Point: Not flammable.
Evaporation Rate: Not applicable.
Flammability: Non-flammable under normal use.
Vapor Pressure: Negligible at room temperature.
Vapor Density: Not relevant (solid).
Solubility: Soluble in water.
Partition Coefficient (log Pow): Data not available.
Auto-ignition Temperature: Data not available.
Decomposition Temperature: Above melting point.
Viscosity: Not applicable.
Chemical Stability: Stable under recommended storage and handling conditions.
Possibility of Hazardous Reactions: No dangerous reactions known under standard use.
Conditions to Avoid: Excess heat, moisture, extreme humidity.
Incompatible Materials: Oxidizing agents, strong acids, alkalis.
Decomposition Products: Decomposes at high temperatures producing fumes of nitrogen oxides, sulfur oxides, hydrogen chloride.
Acute Toxicity: No specific LD50 identified; low to moderate toxicity anticipated based on chemical structure and anecdotal data.
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion.
Symptoms of Exposure: Cough, throat irritation, redness and irritation of skin and eyes; may provoke allergic skin reaction.
Chronic Toxicity: No chronic effects reported in workplace literature; long-term studies lacking.
Carcinogenicity: Not listed by IARC, NTP, OSHA.
Mutagenicity: Unlikely based on available evidence.
Reproductive Toxicity: No data present.
Sensitization: May cause allergic skin responses in sensitized individuals.
Aquatic Toxicity: Evidence from related compounds suggests risk to fish, plankton, and aquatic invertebrates at high doses.
Persistence and Degradability: May not degrade rapidly in aquatic environments; potential for some persistence in soil and water.
Bioaccumulation: Expected to have low potential for bioaccumulation in aquatic species.
Mobility in Soil: May leach through soil if spilled in large quantity; unlikely under regular use.
Other Adverse Effects: No major ozone depletion or greenhouse gas risk.
Disposal Methods: Dispose of in approved waste facilities following all governmental regulations related to chemical disposal; incineration at high temperature preferred.
Packaging: Rinse empty containers, then puncture and dispose in accordance with local waste regulations.
Precautions: Do not allow product to enter water courses, drains, or soil systems.
Disposal of Unused Product: Consult local, regional, or national authorities for specialized disposal.
UN Number: Not classified as a dangerous good.
Transport Hazard Class: Not classified.
Packing Group: Not regulated.
Labeling Needs: Regulatory labeling for workplace safety requirements.
Transport in Bulk: N/A, avoid dust generation and leakage.
Special Precautions for Transport: Protect against physical damage, moisture, and contamination during transport.
US Federal: Not subject to TSCA significant new use rule; observe OSHA and workplace safety requirements.
EU Regulation: Not classified as a hazardous preparation but handle as a potentially hazardous substance.
Canada: DSL listed; compliance with WHMIS as irritant.
Other Regulation: Check country-specific regulations regarding chemical storage, endpoint disposal, and transportation.
Labeling: Required statements, pictograms, and guidance for safe handling under global GHS standards.
