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Product Name: Potassium Dihydrogen Arsenate
Chemical Name: Potassium dihydrogen arsenate, also known as Monopotassium arsenate
Molecular Formula: KH2AsO4
CAS Number: 7778-80-5
Uses: Laboratory reagent, chemical analysis, manufacturing in agriculture and industry
Supplier Information: Manufacturers and importers listed by country regulations provide contact numbers and addresses for transportation and emergencies
Emergency Contact: National poison control center or regional chemical safety facility
Hazard Class: Acute Toxicity (Oral, Dermal, Inhalation), Carcinogen Category 1, Reproductive Toxicity
Label Elements: Danger symbol with skull and crossbones, health hazard icon, exclamation mark
Hazard Statements: Fatal if swallowed, causes serious eye irritation, harmful through skin contact or inhalation, may cause cancer, strong potential for developmental harm
Routes of Exposure: Eyes, skin, ingestion, inhalation
Symptoms: Nausea, vomiting, abdominal pain, dizziness, headache, long-term exposure may impact liver, kidneys, nervous system
Precautionary Statements: Avoid contact, do not breathe dust or vapors, wear suitable PPE, wash thoroughly after handling, prevent release to environment
Chemical Identity: Potassium Dihydrogen Arsenate
Common Names: Monopotassium arsenate, Potassium acid arsenate
Concentration: Typically supplied as 100% solid or as high-purity powder for industrial use
Impurities: Traces of potassium sulfate, possible arsenic oxide residues
Ingredient Synonyms: KH2AsO4
Inhalation: Move the person to fresh air, loosen restrictive clothing, seek medical help immediately if breathing does not improve
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with plenty of water and mild soap, medical attention required for irritation or burns
Eye Contact: Rinse eyes cautiously with water for at least 15 minutes, hold eyelids open, remove contact lenses, get urgent ophthalmologic evaluation
Ingestion: Never give anything by mouth to an unconscious individual, rinse mouth, do not induce vomiting, transport to medical facility right away
Notes for Physicians: Treatment is symptomatic and supportive; arsenic chelators such as dimercaprol (BAL) may be indicated in severe poisoning
Suitable Extinguishing Media: Use dry powder, carbon dioxide, or foam agents; prevent contamination of water sources
Unsuitable Media: Avoid water jets that could spread contamination
Special Hazards: Toxic arsenic-containing fumes emerge under intense heat or fire
Protective Equipment: Full self-contained breathing apparatus, chemical splash suit for responders
Firefighting Precautions: Stay upwind, isolate area, avoid runoff entering drains, evacuate personnel from danger zone where possible
Personal Precautions: Evacuate exposed personnel, don chemical rubber gloves, safety goggles, and appropriate respirator
Environmental Precautions: Prevent entry into soil, drains, surface water and groundwater by lining the area, reporting to authorities for major spills
Containment: Scoop and collect spilled compound using spark-proof tools, place materials in labeled sealed containers
Cleaning Methods: Wet sweeping recommended, avoid raising dust, dispose using approved chemical waste procedures
Precautions for Safe Handling: Keep tightly closed, handle only in well-ventilated dedicated spaces, wash exposed skin areas after use, avoid generation of dust
Incompatible Materials: Strong acids, strong oxidizers, reducing agents
Recommended Storage Conditions: Store at room temperature in dry area, locked cabinet, separate from food and animal feed, away from ignition sources
Containers: Only use corrosion-resistant, airtight labeled containers with secure lids
Occupational Exposure Limits: Arsenic ceiling value typically set at 0.01 mg/m3 (OSHA); check current regional regulations
Engineering Controls: Use fume hoods, exhaust ventilation, containment systems designed for highly toxic powders
Personal Protection Equipment: NIOSH-approved respirator for dust, chemical splash goggles, impervious gloves, full-body covering, safety boots
Hygiene Measures: Remove and wash contaminated clothing before reuse, prohibit eating/drinking in exposure areas, utilize eye wash stations and emergency showers nearby
Appearance: White crystalline solid or powder
Odor: Odorless
Melting Point: 252°C (decomposes)
Solubility in Water: Highly soluble, forms clear colorless solution
Density: Approximately 2.33 g/cm3
pH (1% solution): Slightly acidic, pH around 4.4-4.6
Boiling Point: Decomposes without boiling
Vapor Pressure: Negligible at room conditions
Other Properties: Not combustible, hygroscopic to some degree
Chemical Stability: Maintains integrity under normal storage and use, sensitive to thermal decomposition
Reactivity: Can react with strong acids, releases toxic arsenic oxides on heating
Hazardous Decomposition: Emission of arsenic trioxide fumes, potassium compounds
Polymerization: Not likely under recommended conditions
Acute Toxicity: Extremely toxic by ingestion, skin contact, inhalation; LD50 (oral, rat) under 20 mg/kg
Chronic Effects: Chronic exposure leads to arsenic poisoning, skin lesions, organ damage, increased cancer risk
Carcinogenicity: Classified as Group 1 carcinogen (IARC, NTP), strong causative evidence for lung, skin, bladder cancers
Systemic Effects: Risk of developmental, reproductive toxicity, peripheral neuropathy, cardiovascular effects, hypopigmentation, Mees’ lines in nails
Ecotoxicity: Acute toxicity to aquatic organisms, bioaccumulates in food chain, directly toxic to soil microbes, plants, and animals
Persistence/Degradability: Arsenic is persistent in the environment, non-biodegradable, accumulates in sediments
Mobility in Soil: High mobility, risk of groundwater contamination
Other Adverse Effects: Linked to serious drinking water contamination crises, strict regulations on disposal
Waste Treatment Methods: All residues and contaminated packaging require collection by licensed hazardous waste contractor
Disposal Regulations: Disposal must comply with local, national, international chemical waste regulations, incineration or landfill at secure hazardous sites
Packaging Disposal: Triple-rinse containers, deface labels, prevent reuse
UN Number: UN1558
Proper Shipping Name: Potassium Arsenate
Transport Hazard Class: 6.1 Toxic substances
Packing Group: II (medium danger)
Transport Label: Toxic, marine pollutant where applicable
Special Transport Precautions: Ensure secure loading, do not transport with foodstuffs or feed, emergency response plans required in transit
GHS Classification: Acute Toxicity Oral 2, Acute Toxicity Dermal 2, Aquatic Acute 1, Carcinogen 1A
International Regulations: EU REACH restricted, US TSCA, OSHA, and EPA regulated, listed on Canadian DSL/NDSL
Workplace Regulations: Extensive controls under specific occupational exposure regulations, personal protective policies mandated
Community-Right-to-Know: Listed under hazardous chemical reporting in multiple jurisdictions, notification required for use or storage above threshold limits
