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Product Name: Sodium Arsenite Aqueous Solution
Chemical Formula: NaAsO2 in H2O
Common Names: Sodium meta-arsenite, Sodium arsenious oxide
Recommended Use: Laboratory reagent, preservative, pesticide production
Supplier Details: Manufacturer name, address, and emergency contact number should be made available on the shipping label and product datasheet
CAS Number: 7784-46-5
Classification: Acute toxicity (oral, dermal, inhalation), carcinogenicity, aquatic toxicity
GHS Label: Skull and crossbones, environment, health hazard
Hazard Statements: Highly toxic by ingestion, inhalation, and skin contact; possible carcinogen; very toxic to aquatic organisms
Symptoms of Exposure: Nausea, vomiting, abdominal pain, convulsions, muscle weakness, organ damage on prolonged exposure
Routes of Entry: Inhalation, ingestion, skin absorption, eye contact
Chemical Name: Sodium Arsenite
CAS Number: 7784-46-5
Concentration: Concentration varies, typically 1% - 10% sodium arsenite in water
Impurities: Trace contaminants may include other arsenic oxides or sodium salts depending on supplier specifications
Inhalation: Move person to fresh air immediately; keep at rest and warm; medical attention required as soon as possible
Skin Contact: Remove contaminated clothing; flush affected area with large amounts of water for at least 15 minutes; seek immediate medical attention
Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present; continue rinsing and seek urgent medical advice
Ingestion: Seek medical advice immediately; do not induce vomiting; rinse mouth only if victim is conscious
Most Immediate Symptoms: Diarrhea, hypotension, shock, confusion, cyanosis
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or foam; avoid water spray directly on product
Hazards from Combustion: Toxic fumes including arsenic oxides may arise; ventilate the area
Protective Equipment: Full protective gear and self-contained breathing apparatus are necessary for firefighters
Special Actions: Move containers from fire area if it can be done without risk; cool unlocked containers with water spray from safe distance
Personal Precautions: Evacuate area, restrict access, avoid contact with skin and eyes, wear chemical-resistant clothing and proper respiratory protection
Environmental Precautions: Stop material from entering drains, sewers, or watercourses; notify local environmental authorities if large spill occurs
Cleanup Methods: Absorb spill with inert material, collect into chemical waste container; decontaminate area with sodium hypochlorite solution and then rinse thoroughly with water; ventilation required throughout cleanup
Handling: Use only in chemical fume hood; avoid inhalation of vapors and direct contact; keep containers closed when not in use; do not eat, drink, or smoke while handling
Storage Conditions: Store in cool, dry, well-ventilated area away from acids, oxidizers, and incompatible substances; keep away from children and unauthorized users
Incompatibilities: Strong acids, oxidizing agents, reducing agents that might cause dangerous reactions
Engineering Controls: Local exhaust ventilation or chemical fume hood required
Personal Protective Equipment: Chemical-resistant gloves, laboratory coat, splash-resistant goggles, full-face shield, and certified respirator for airborne exposure possible
Exposure Limits: OSHA PEL (Arsenic, inorganic): 0.01 mg/m3 TWA; ACGIH TLV: 0.01 mg/m3 TWA
Hygiene Measures: Wash hands and face thoroughly after handling; remove contaminated clothing and wash before reuse; facilities for emergency eye and skin wash nearby
Appearance: Clear to pale yellow liquid
Odor: Odorless or faint metallic
pH: Neutral to slightly alkaline, depending on concentration
Boiling Point: Close to water (100°C), depends on solution concentration
Melting/Freezing Point: Below 0°C
Solubility: Completely soluble in water
Vapor Pressure: Comparable to water
Density: Around 1.05 – 1.15 g/cm3 (varies with concentration)
Other Data: Can form hazardous arsenic-containing dusts if dried
Chemical Stability: Stable under normal temperatures and pressures; decomposes with heat or contact with acids
Dangerous Reactions: Contact with acids generates toxic arsine gas; strong oxidizing or reducing agents can create fire or explosion hazard
Incompatible Materials: Acids, oxidizing agents, strong reducing agents
Hazardous Decomposition Products: Arsenic oxides, hydrogen arsenide (arsine) gas
Acute Toxicity: Extremely toxic by ingestion, inhalation, and dermal routes
LD50 (oral, rat): 15 – 48 mg/kg
Chronic Toxicity: Prolonged exposure leads to skin, lung, and organ damage; carcinogenic in humans with repeated contact
Carcinogenicity: Listed as carcinogenic by IARC, NTP, and OSHA
Symptoms of Overexposure: Abdominal cramps, skin eruptions, numbness, muscle pain, and neuropathy
Target Organs: Liver, kidneys, nervous system, skin
Toxicity to Aquatic Life: High toxicity for aquatic organisms; significant risk of bioaccumulation
Persistence/Degradability: Arsenic compounds persist in environment and do not break down easily
Mobility in Soil: Sodium arsenite is highly mobile in water and soils; poses risk of contaminating groundwater
Bioaccumulation: Can accumulate in aquatic food chains; chronic poisoning in fish and wildlife documented around contaminated sites
Waste Handling: Treat as hazardous waste (Arsenic compound); use licensed chemical waste disposal contractor
Container Disposal: Decontaminate empty containers before disposal or return for refilling if possible
Regulatory Code: U.S. RCRA Hazardous Waste Number P012; local, regional, and national regulations apply
Best Practice: Avoid discharge to environment; keep records of disposal and follow legal and safety obligations meticulously
UN Number: 1685
Proper Shipping Name: Sodium arsenite solution
Transport Hazard Classes: Class 6.1 (Toxic substances)
Packing Group: II
Labels Required: Toxic (skull and crossbones symbol)
Special Precautions: Transport only in original containers, ensure secure closure and proper segregation from incompatible materials, emergency response documentation must accompany each transport
OSHA Standards: Sodium arsenite classified as highly toxic; strict workplace exposure and hazard communication rules in effect
TSCA: Listed in U.S. Toxic Substances Control Act inventory
SARA Title III: Subject to reporting under Extremely Hazardous Substances Listing
REACH (EU): Registration required for manufacture or import in the European Union; carries authorization and restriction requirements
Other Labeling Requirements: Product carries poison, carcinogen, and aquatic hazard warnings per global harmonized system (GHS) and local labeling statutes
