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Product Name: Copper Selenate
Chemical Formula: CuSeO4•xH2O
Synonyms: Cupric selenate, Copper(II) selenate
CAS Number: 15618-48-3
Recommended Use: Laboratory research, chemical synthesis
Supplier: Information specific to supplier's address and contact
Emergency Contact: Local poison control center or supplier emergency number
GHS Classification: Acute toxicity (oral, dermal, inhalation), Specific target organ toxicity
Pictograms: Skull and crossbones, exclamation mark
Signal Word: Danger
Hazard Statements: Toxic if swallowed, fatal in contact with skin, may cause organ damage
Precautionary Statements: Avoid all unnecessary exposure, use personal protective equipment, seek medical attention if exposed
Routes of Exposure: Inhalation, ingestion, skin absorption, eye contact
Symptoms of Exposure: Gastrointestinal distress, respiratory irritation, skin burns, eye damage, neurological effects
Chemical Name: Copper(II) Selenate
CAS Number: 15618-48-3
Concentration: 98–100% (purified form)
Impurities: Trace water of hydration, possible minor metal contaminants
Hazardous Components: Contains both copper and selenium ions, both presenting distinct toxicological risks
Physical Form: Blue to green crystalline solid
Molecular Weight: Varies by hydration level, typically around 253 g/mol for anhydrous
Inhalation: Move person to fresh air, keep at rest, call for medical help immediately, administer oxygen if breathing difficulty occurs
Skin Contact: Remove contaminated clothing, rinse skin with water for minimum 15 minutes, seek urgent medical treatment, avoid reusing clothing
Eye Contact: Rinse eyes with copious water for at least 15 minutes, keep eyelids open during rinsing, seek specialist medical advice promptly
Ingestion: Do not induce vomiting, rinse mouth with water (provided the subject is conscious), seek immediate medical attention
Medical Attention: Doctors should consider selenium and copper toxicity, monitor vital signs, support respiratory and cardiovascular function
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, do not use water jets directly
Special Hazards: Toxic fumes of selenium oxides and copper compounds, possible emission of irritating or corrosive gases
Protective Equipment: Firefighters should use full face self-contained breathing apparatus and protective clothing, avoid inhaling vapors
Specific Methods: Contain contaminated firefighting water, prevent runoff into water bodies or drainage
Explosion Risk: Copper selenate does not present a known explosion hazard, thermal decomposition may amplify dangers
Personal Precautions: Evacuate unnecessary personnel, use appropriate ventilated area, equip exposed staff with gloves, goggles, chemical-resistant suits and respiratory protection
Spill Response: Do not inhale dust, avoid skin and eye contact, contain and collect spillage using non-combustible absorbent materials, sweep into chemical waste containers
Environmental Precautions: Prevent further leakage or spillage if safe to do so, do not allow material to enter drains, surface water or soil
Decontamination: Clean spill area thoroughly, ventilate area, dispose of cleanup materials as hazardous waste
Notification Procedures: Notify local authorities if environmental contamination has occurred
Safe Handling Practices: Operate in chemical fume hood, minimize generation of dusts, avoid all direct contact, do not eat, drink, or smoke while handling, wash hands after use
Storage Conditions: Store in tightly closed containers, keep in cool, well-ventilated area, segregate from foodstuffs, strong acids, and incompatible materials
Incompatibilities: Strong acids, strong oxidizing or reducing agents, combustible materials
Technical Controls: Use corrosion-resistant shelving, secondary containment recommended, secure against unauthorized access
Storage Class: Toxic substance, inhalation and ingestion risks
Exposure Limits: OSHA PEL (Copper dust and mist): 1 mg/m³, ACGIH TLV (Selenium compounds): 0.2 mg/m³
Engineering Controls: Work in fume hood, use local exhaust ventilation, install spill containment
Personal Protective Equipment: NIOSH-approved respirator, chemical-resistant gloves (nitrile or neoprene), lab coat, full eye protection (goggles, face shield), chemical-resistant apron and boots
Hygiene Measures: Change contaminated clothing immediately, wash thoroughly after handling, do not take contaminated clothing home
Environmental Exposure Controls: Prevent emission to atmosphere, regularly monitor work areas, maintain spill kits and emergency decontamination supplies
Appearance: Blue-green to blue crystalline powder
Odor: Odorless
Melting Point: Decomposes before melting, above 150°C (roughly)
Boiling Point: Not applicable
Solubility: Soluble in water
pH (aqueous solution): Acidic (decomposition may lower pH further)
Specific Gravity: Approx. 3.0–3.5
Vapor Pressure: Not relevant (solid form)
Partition Coefficient: Not determined
Other Properties: Hygroscopic, may form hydrates on exposure to air
Chemical Stability: Stable under standard laboratory conditions when protected from moisture and high temperatures
Sensitive To: Heat, acid vapors, reducing environments
Hazardous Reactions: Violent reactions or toxic gas release in contact with acids or reducing agents
Decomposition Products: Selenium oxides, copper oxides, sulfur oxides, possibly hydrogen selenide
Polymerization: Polymerization not anticipated
Incompatible Materials: Organic chemicals, combustible substances, strong oxidizers and reductants
Acute Toxicity: Toxic by ingestion, inhalation, or skin absorption (may be fatal at relatively low doses)
Symptoms: Nausea, vomiting, diarrhea, abdominal pain, dizziness, respiratory trouble, convulsions, organ failure
Chronic Effects: Target organ damage including liver, kidneys, nervous system, risk of selenium and copper poisoning (selenosis, Wilson’s disease symptoms)
Routes of Exposure: Skin, eyes, ingestion, inhalation
Carcinogenicity: Not classified as carcinogen by IARC, NTP, or OSHA
Mutagenicity / Teratogenicity: Data limited, precaution warranted
Other Data: Increasing evidence links selenium compounds to both beneficial and toxic effects at low dose difference
Eco-toxicity: High toxicity to aquatic life (both copper and selenium pose threats to fish, invertebrates, plant life)
Persistence / Degradability: Does not degrade readily, both elements persist and may bioaccumulate
Bioaccumulation Potential: Notable for selenium and copper up the food chain, potential for ecosystem transfer and magnification
Mobility in Soil/Water: Moderately mobile in water, can contaminate groundwater and surface waters
Other Environmental Risk: Disrupts reproductive health in aquatic organisms, may affect bird populations via selenium bioaccumulation
Avoid Release: Absolute care necessary to prevent accidental environmental exposure
Waste Treatment Methods: Disposal must follow local, regional, and national hazardous waste regulations
Preferred Disposal: High-temperature incineration in approved facility, do not landfill or release untreated to environment
Packaging Disposal: Decontaminate packaging before reuse or offer for recycling, treat as hazardous waste if contamination is likely
Contaminated Materials: Gloves, cleaning materials, protective clothing must be disposed of as chemical waste
Do Not: Allow to enter drains, surface water, or normal waste streams
UN Number: 3283 (Toxic solid, inorganic, n.o.s. [contains selenium compound, copper compound])
UN Proper Shipping Name: Toxic Solid, Inorganic, N.O.S.
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: II (medium danger)
Labels: Toxic, environmental hazard
Special Transport Precautions: Transport in sealed containers, segregate from food and feed, keep documentation with shipment
Other: Emergency Response Guidebook (ERG) suggests spillage or exposure risk to emergency responders
US Federal: TSCA listed, subject to SARA Title III (EPCRA), requiring reporting above threshold limits for both copper and selenium compounds
State Regulations: Subject to California Proposition 65 and other state-level right-to-know rules
ECHA (EU): REACH-registered hazardous substance; restrictions on release to environment and occupational exposure
Labeling Requirements: GHS/CLP-compliant hazardous substance labeling, transport hazard labels, emergency contacts
Other National Inventories: Listed in Canada (DSL), Australia (AICS), Japan (ENCS), China (IECSC)
Workplace Control: Subject to workplace exposure limit monitoring and recordkeeping
