Product Name: 3-Amino-2-Hydroxy-5-Nitrobenzenesulphonic Acid
Chemical Formula: C6H6N2O6S
Synonyms: 5-Nitro-2-hydroxy-3-aminobenzenesulfonic acid
Recommended Use: Intermediate in dye and pigment production, specialty chemical manufacturing
Manufacturer Details: Chemical supplier contact information to be provided on request
Emergency Phone: Local poison control center or hazardous material response
CAS Number: 96-67-3
Hazard Classification: Acute toxicity (oral), Eye irritation, Skin sensitizer
Label Elements: Pictogram of exclamation mark
Signal Word: Warning
Hazard Statements: May cause skin and eye irritation, may trigger allergic skin reaction, harmful if swallowed
Precautionary Statements: Wear gloves and eye protection, avoid inhaling dust, wash after handling, do not eat or drink near material
Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Pictograms: GHS07 (Exclamation Mark for irritant)
Potential Health Effects: Irritation to respiratory tract, eyes, and skin. Heavy exposure may produce cough, headache, nausea
Chemical Name: 3-Amino-2-Hydroxy-5-Nitrobenzenesulphonic Acid
Concentration: >99%
Impurities: Trace organic or inorganic impurities below threshold for classification
CAS Number: 96-67-3
Molecular Weight: 234.19 g/mol
General Advice: Remove contaminated clothing and rinse skin with water. Monitor for symptoms of distress. Seek medical attention if symptoms persist.
Inhalation: Move exposed person to fresh air, keep warm and at rest. If breathing is labored, seek immediate medical help.
Skin Contact: Remove any contaminated clothing; wash with soap and water for at least 15 minutes.
Eye Contact: Immediately flush eyes with running water. Keep eyelids open and rinse for at least 15 minutes. Get prompt medical attention.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting unless directed by medical professionals. Seek medical help if feeling unwell.
Most Important Symptoms: Irritation, redness, burning sensation. Sensitization possible on repeat contact.
Suitable Extinguishing Media: Dry chemical, CO2, water spray, or foam. Use what is at hand for surrounding fire.
Unsuitable Media: Direct water stream may spread contaminated material.
Special Hazards: Product may emit oxides of nitrogen and sulfur if burned.
Protective Equipment: Wear self-contained breathing apparatus and full protective gear.
Advice for Firefighters: Try to prevent runoff from entering drains or watercourses, minimize dust during clean up.
Thermal Decomposition Products: Sulfur oxides, nitrogen oxides, irritant fumes.
Personal Precautions: Avoid inhalation, contact with skin and eyes. Use gloves and respirator if high dust exposure is possible.
Environmental Precautions: Prevent discharge into drains, waterways. Alert environmental authorities if major spill occurs.
Methods of Cleanup: Collect dry powder using a shovel, sweep up gently to minimize dust, place in approved waste containers. Ventilate area and wash spill site.
Reference to Other Sections: Refer to sections on exposure controls, protective equipment, and disposal.
Safe Handling Practices: Handle with care in well-ventilated area, avoid creating dust, avoid all contact with skin or eyes.
Incompatible Materials: Strong oxidizers, acids, and bases. Avoid exposure to moisture.
Storage Conditions: Store in a cool, dry, ventilated space away from heat sources. Keep container tightly closed when not in use.
Special Requirements: Use spark-proof tools, ground all equipment. Keep away from food, beverages, and animal feed.
Storage Class: Assigned for chemicals with similar hazard profile—consult specific regulatory requirements.
Occupational Exposure Limits: No U.S. OSHA or ACGIH exposure limits set specifically for this compound. Use standard controls for nuisance dust to maintain safe work environment.
Engineering Controls: Use local exhaust ventilation, closed handling systems, and dust extraction in process areas.
Personal Protective Equipment: Wear chemical-resistant gloves, safety goggles or face shield, and lab coat. Respirators advised if airborne concentrations risk being high.
Hygiene Measures: Wash thoroughly after handling, remove contaminated clothing. Do not eat, drink or smoke during use.
Environmental Controls: Employ secondary containment, spill response plans.
Appearance: Yellow to brown crystalline powder
Odor: Odorless or faint nitroaromatic scent
pH (1% aqueous): Around 2.5-3
Melting Point: Decomposes without clear melting
Boiling Point: Not applicable - decomposes
Solubility: Highly soluble in water, partially soluble in ethanol
Vapor Pressure: Not expected to volatilize at ambient temperature
Density: Approximately 1.8 g/cm³ at 25°C
Partition Coefficient (log Kow): Data not readily available
Flash Point: Not flammable under typical conditions
Evaporation Rate: Negligible
Chemical Stability: Generally stable under normal storage conditions
Reactivity: Strong oxidizing agents, acids, and bases may initiate hazardous reactions
Conditions to Avoid: Excess heat, exposure to moisture, open flames, direct sunlight
Hazardous Decomposition Products: Sulfur dioxide, nitrogen oxides, carbon monoxide
Polymerization: No hazardous polymerization expected during normal use
Incompatibilities: Avoid mixing with oxidizers, reducing agents, and alkalis
Acute Toxicity: Oral LD50 (rat): Not fully characterized, comparable compounds suggest moderate toxicity
Skin Irritation: May cause irritation or allergic reaction
Eye Irritation: Produces significant eye irritation
Respiratory Exposure: Inhalation of dust may result in cough, shortness of breath, headache, nausea
Sensitization: May cause allergy-type skin reaction
Chronic Toxicity: Prolonged or repeated exposure can lead to sensitization, dermatitis
Carcinogenic Effects: Not classified as carcinogen under common regulatory frameworks
Mutagenicity: No data to indicate mutagenic hazard for the material itself
Reproductive Toxicity: No conclusive data available
Aquatic Toxicity: Harmful to aquatic organisms, especially in larger concentrations
Persistence and Degradability: May resist rapid biodegradation. Potential to persist in sediment or sludge
Bioaccumulation Potential: Limited evidence for accumulation in aquatic food chain
Mobility in Soil: High solubility in water means risk of groundwater contamination if released
Other Ecological Effects: No significant biological oxygen demand. Prevent discharge to open water without treatment
Waste Disposal: Collect and dispose of waste through licensed hazardous waste contractor
Appropriate Methods: Incinerate in chemical incinerator fitted with afterburner and scrubber, or landfill at permitted facility according to local rules
Contaminated Packaging: Dispose of as hazardous material, ensure containers are empty and clean before recycling or disposal
Precautions: Wear protective gear during disposal operations. Avoid dust generation, prevent environmental release
UN Number: Not regulated for road, rail, air transport in most jurisdictions—check for local exceptions
Transport Hazard Class: Non-hazardous for transport under ADR/RID/IMDG/IATA
Packing Group: No classification as hazardous material for packing grouping
Labeling Requirements: Hazard communication based on workplace safety, not transport-specific labels
Special Precautions: Secure packaging, avoid moisture during transport
GHS Classification: Acute toxicity Oral 4, Skin Sensitization 1, Eye Irritant 2A
OSHA Status: Not specified as a hazardous substance under current U.S. OSHA hazard communication standard
TSCA Inventory: Listed
REACH Status: Check with supplier for registration under REACH (EU chemicals regulation)
SARA 313: Substance not present
EINECS Number: 202-522-5
Other Regulations: Comply with national, state, and local regulations for chemical use and storage.
