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Product Name: 2-Nitrobenzenearsonic Acid
Synonyms: Orthanilic acid arsonate, 2-nitrobenzenearsonate
CAS Number: 98-05-5
Recommended Use: Laboratory chemical, research purposes
Supplier Details: Supply chain information available through major chemical distributors; questions about sourcing can be directed to laboratory supply firms.
Emergency Telephone Number: National emergency response centers or poison control can provide urgent assistance.
Classification: Hazardous under GHS, acute toxicity (oral), skin irritation, eye irritation, carcinogenic category suspected
Signal Word: Danger
Hazard Statements: Harmful if swallowed. Causes skin and eye irritation. Suspected of causing cancer with repeated or prolonged exposure.
Pictograms: Skull and crossbones, exclamation mark, health hazard
Precautionary Statements: Avoid breathing dust or vapor. Wear protective gloves, clothing, and eye protection. Do not eat, drink, or smoke during use. Wash thoroughly after handling. Dispose following local, regional, national, and international regulations.
Chemical Name: 2-Nitrobenzenearsonic Acid
Common Formula: C6H6AsNO5
Concentration: 100% (pure compound)
Impurities: No significant impurities expected in reagent grade material. Trace inorganics from synthesis possible in technical grades. Trace contaminants may include residual solvents from manufacturing process.
Inhalation: Move to fresh air. Contact medical support if symptoms like coughing, shortness of breath, or dizziness develop. Provide oxygen if breathing difficulties persist.
Skin Contact: Remove contaminated clothing. Rinse skin under streaming water for at least 15 minutes. Soap assists removal. Call for medical evaluation if redness, blistering, or irritation persists.
Eye Contact: Rinse eyes carefully with water for several minutes, holding eyelids open. Remove contact lenses. Continue rinsing and arrange medical examination.
Ingestion: Rinse mouth with clean water. Seek immediate medical advice. Do not induce vomiting unless instructed by a medical professional. Give water to drink only if victim is conscious.
Advice for Doctors: Treat symptoms. Consider possibility of arsonic compound toxicity in differential diagnosis.
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide. Water spray used to cool containers.
Specific Hazards: Toxic fumes from arsonic compounds and nitrogen oxides may form under combustion. Risk of arsenic-containing gas emission.
Protective Equipment: Wear full protective suit and positive pressure self-contained breathing apparatus.
Firefighting Precautions: Keep safe distance, avoid breathing fumes, prevent fire control runoff from entering waterways.
Special Procedures: Fight fire from upwind position, use barriers to prevent spread, keep containers cool with water spray.
Personal Precautions: Evacuate area. Avoid direct contact. Use dust mask or respirator, chemical resistant gloves.
Environmental Precautions: Prevent entry into drains, sewers, water courses, or soil.
Cleanup Methods: Sweep up with non-sparking tools. Collect spilled material into labeled waste containers. Wash area thoroughly after cleanup.
Decontamination: Rinse area with copious water, capture rinse solution for disposal as hazardous waste.
Further Guidance: Report large spills according to local environmental and health guidelines.
Precautions for Safe Handling: Handle only with appropriate personal protective equipment. Avoid dust formation. Avoid contact with skin, eyes, and clothing. No eating, drinking, or smoking in work area.
Storage Conditions: Store in tightly sealed containers in a dry, well-ventilated, cool place, away from acids and incompatible chemicals.
Segregation: Keep away from food, feedstuffs, and animal housing areas. Store separately from oxidizers, bases, and reducing agents. Do not store near heat or open flame.
Incompatibilities: Avoid contact with strong acids, bases, and oxidizing agents as decomposition can release toxic fumes.
Storage Recommendations: Use secondary containment to prevent leak spread.
Occupational Exposure Limits: No established OSHA, ACGIH, or NIOSH exposure limits for pure substance; treat as toxic chemical. Handle with caution due to possible carcinogenicity.
Engineering Controls: Use chemical fume hood, mechanical exhaust, or local extraction to minimize airborne dust or vapor.
Personal Protective Equipment: Gloves (nitrile or neoprene), lab coat, chemical apron, splash goggles, face shield in case of risk of splashing.
Respiratory Protection: Use NIOSH-approved respirator for dust or mist if ventilation is insufficient.
Hygiene Measures: Wash hands thoroughly after handling, do not touch face or exposed skin with contaminated gloves. Remove contaminated clothing and launder before reuse.
Appearance: Yellow to orange crystalline powder
Odor: Odorless or faint chemical odor
Odor Threshold: Not established
pH: 1% aqueous solution, acidic
Melting Point: 212-216°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not determined
Flammability: Not flammable
Relative Density: 2.1-2.2 (water = 1)
Solubility: Soluble in water, poorly soluble in ethanol
Octanol/Water Partition Coefficient: Not available
Vapor Pressure: Negligible at ambient temperature
Vapor Density: Not applicable
Decomposition Temperature: >210°C
Evaporation Rate: Not established
Other Data: Tends to absorb moisture from air under high humidity.
Chemical Stability: Stable under recommended handling and storage conditions.
Reactivity: Mild reactivity to heat or chemical overload.
Conditions to Avoid: Excessive heat, presence of strong acids or bases, exposure to strong oxidizing agents.
Incompatible Materials: Alkalis, oxidizers, strong acids.
Hazardous Decomposition Products: Arsenic trioxide, nitrogen oxides, toxic gases.
Polymerization: Hazardous polymerization does not occur.
Likely Routes of Exposure: Inhalation, ingestion, skin, and eye contact.
Acute Effects: Harmful if swallowed (LD50 rat oral 250 mg/kg typical). Irritation of skin, eyes; respiratory tract irritation if inhaled.
Chronic Effects: Repeated or prolonged contact may cause arsenic poisoning symptoms, including gastrointestinal upset, muscle aches, liver or kidney toxicity.
Carcinogenicity: Classified as possible human carcinogen based on arsenic compound behavior.
Other Toxicological Data: Causes irreversible health effects on target organs with chronic or high dose exposure. May affect blood, nervous system, and reproductive organs in extreme cases.
Symptoms of Overexposure: Nausea, vomiting, abdominal cramps, diarrhea, skin rash, dizziness, headache.
Ecotoxicity: Highly toxic to aquatic life and invertebrates due to arsenic content. Bioaccumulates in food chains.
Persistence and Degradability: Arsenic compounds persist in soils and sediments.
Mobility in Soil: Can leach into groundwater depending on environmental conditions.
Bioresistance: Not readily biodegradable. Plants and microorganisms may take up arsenic, introducing it to wider environments.
Other Adverse Effects: Potential to harm wildlife, disrupt ecosystems, affect drinking water if improperly disposed.
Waste Treatment Methods: Dispose as hazardous waste at permitted facilities. Consult environmental authorities for regulatory acceptable solution.
Container Disposal: Empty containers retain product residue; manage containers as hazardous waste. Decontaminate then dispose through proper channels.
Avoidance: Do not landfill, dump in sewers, storm drains, or natural bodies of water.
Recommended Disposal: Incinerate only under controlled conditions with arsenic emission control, or secure chemical landfill certified for arsenic waste.
Recycling: Not applicable due to toxicity risk.
UN Number: UN1557
Proper Shipping Name: Arsenic compound, solid, n.o.s. (contains 2-Nitrobenzenearsonic acid)
Transport Hazard Class: 6.1 (toxic substances)
Packing Group: II
Environmental Hazard: Marine pollutant
Special Precautions: Transport under lock and key, restrict access to authorized personnel. Document all shipments carefully.
Regulatory Compliance: Follow IATA, IMDG, DOT, ADR guidelines for toxic solids containing arsenic.
OSHA Status: Regulated under toxic substance rules.
EPA Status: Subject to RCRA, CERCLA as hazardous waste (contains regulated arsenic compound).
TSCA Status: Listed or subject to reporting. Review local chemical inventory requirements.
Labeling Requirements: GHS-compliant hazard labels required in all transport and storage.
Other Standards: Subject to workplace exposure control measures under occupational safety and health laws.
International Regulation: Covered under regulations for hazardous substances in EU, Asia-Pacific, and Latin American countries.
User Responsibility: Anyone handling this chemical must comply with all legal requirements for storage, use, transport, and disposal.
