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Product Name: Mercurous Nitrate
Chemical Formula: Hg2(NO3)2
Synonyms: Mercury(I) nitrate, Mercuric nitrate
CAS Number: 10045-94-0
Recommended Use: Laboratory reagent, production of chemicals, analytical chemistry
Manufacturer: Contact local supplier for details
Emergency Contact: Refer to national or local emergency number
GHS Classification: Acute toxicity (oral, dermal, inhalation), Skin corrosion/irritation, Serious eye damage, Specific organ toxicity, Harmful to aquatic life
Signal Word: Danger
Hazard Statements: May cause damage to kidneys, nervous system, blood with repeated exposure; fatal if inhaled or swallowed; causes severe skin burns and eye damage
Pictograms: Skull and crossbones, Corrosive, Health hazard, Environment
Precautionary Statements: Wear protective gloves, protective clothing, eye and face protection; avoid breathing dust or vapors; avoid release to the environment; wash thoroughly after handling
Chemical Name: Mercurous Nitrate
Chemical Formula: Hg2(NO3)2
Concentration: 98–100%
CAS Number: 10045-94-0
Impurities: Possible traces of other mercury compounds as process residuals
Inhalation: Remove person to fresh air, keep at rest; provide oxygen or artificial respiration as required; seek medical attention immediately
Skin Contact: Remove contaminated clothing and footwear; rinse skin with large amounts of water for at least 15 minutes; do not use ointments; seek medical attention
Eye Contact: Flush eyes with running water for several minutes, forcibly holding eyelids apart; remove contact lenses if present and easy to do; seek prompt medical attention
Ingestion: Rinse mouth with plenty of water if conscious; do not induce vomiting; seek immediate medical help
Medical Attention: Take care to inform health professionals of mercurous nitrate exposure; provide MSDS to medical staff; monitor for delayed symptom development
Suitable Extinguishing Media: Use dry chemical, CO2 extinguishers, or appropriate foam; avoid water if not necessary due to runoff hazard
Specific Hazards: Releases mercury and nitrogen oxides when heated; fumes may be toxic and corrosive
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective suit to prevent exposure to dust, smoke, or fumes
Special Precautions: Stay upstream, use water spray to cool fire-exposed containers, isolate hazard area, avoid inhalation of combustion products
Explosion Data: Not sensitive to mechanical impact or static discharge, but may accelerate combustion of other materials due to containing nitrates
Personal Precautions: Wear NIOSH-approved respirator, chemical splash goggles, gloves, and protective clothing
Methods for Containment: Avoid release to environment; prevent dust formation; ventilate area
Cleanup Methods: Sweep up carefully using tools that do not generate dust; place material in sealed containers for disposal as hazardous waste; clean area with damp cloth or HEPA-equivalent vacuum
Environmental Precautions: Do not allow to enter drains, surface water, or soil; prevent further leakage if safe to do so; notify authorities as required
Decontamination: Wash affected surfaces with dilute sodium thiosulfate solution to reduce mercury content before final cleaning
Handling: Use only in well-ventilated areas; avoid generating dust or aerosol; prevent skin and eye contact; handle inside chemical fume hood when possible
Storage: Store in tightly closed containers made of compatible materials (glass or certain plastics); keep containers in a cool, dry, well-ventilated location isolated from strong acids, strong bases, organics, reducing agents, and combustibles
Incompatibilities: Ammonia, sodium, organic substances, combustibles; risk of violent reaction
Other Requirements: Post warning signs in storage area; limit access to authorized personnel; inspect storage containers regularly for corrosion or leaks
Occupational Exposure Limits: Mercury compounds (as Hg): OSHA PEL 0.1 mg/m3 (skin), ACGIH TLV 0.025 mg/m3 (TWA, skin)
Engineering Controls: Chemical fume hood, local exhaust ventilation, properly maintained ductwork
Personal Protective Equipment: NIOSH-approved respirator (if airborne exposure exceeds limits), chemical-resistant gloves (nitrile, neoprene), lab coat, safety goggles or face shield
Hygiene Measures: Wash hands and face after handling; avoid eating, drinking, or smoking near product; remove contaminated clothing before leaving work area
Appearance: White to pale yellow crystalline solid
Odor: Odorless
Melting Point: Decomposes before melting
Solubility: Soluble in water, especially hot
Density: 4.78 g/cm3 (approx.)
Boiling Point / Range: Not applicable (decomposes)
pH (aqueous): Acidic
Vapor Pressure: Not established (non-volatile solid)
Other Properties: Reacts violently with ammonium salts and organics; releases toxic mercury vapor if heated
Chemical Stability: Stable under recommended storage conditions; decomposes under humid, high-temperature, or acidic conditions
Reactivity: Oxidizing agent; reacts with ammonia, ammonium compounds, sodium, reducing agents, organics
Incompatible Materials: Strong acids, strong bases, organic materials, metals, ammonium compounds
Hazardous Decomposition Products: Mercury vapor, nitrogen oxides, toxic gases
Polymerization: Will not occur
Acute Toxicity: Highly toxic by all routes (oral, dermal, inhalation); LD50 (oral/rat): 26 mg/kg
Skin Contact: Causes redness, pain, burns, delayed ulcers
Eye Contact: Severe burns, permanent tissue damage, possible blindness
Inhalation: Respiratory tract irritation, headache, nausea, metallic taste, vomiting, abdominal pain, vertigo, possible fatal pulmonary edema
Ingestion: Burns to mouth, throat, gastrointestinal tract; kidney and liver damage, collapse, death
Chronic Effects: Mercury accumulation causes erethism, memory loss, tremor, kidney dysfunction, personality changes
Carcinogenicity: Not classified as carcinogenic (IARC, ACGIH); mercury compounds considered possible reproductive hazards
Sensitization: May cause allergic skin or respiratory reactions
Ecotoxicity: Acute and long-term hazard to aquatic organisms; mercury persists in environment, bioaccumulates in food chains
Persistence and Degradability: Not readily biodegradable; mercury remains in soil, water, sediments for long periods
Mobility in Soil: Moderately to highly mobile; risk of groundwater contamination
Bioaccumulative Potential: Strong bioaccumulation in aquatic species, higher trophic levels
Other Adverse Effects: Mercury released to the environment transforms into methylmercury, highly toxic to humans and wildlife
Waste Disposal: Collect and dispose of waste through a licensed hazardous waste contractor; follow national and local regulations for mercury-containing waste
Container Disposal: Decontaminate and dispose of containers as hazardous waste; do not reuse empty containers
Special Instructions: Avoid release to sewer, soil, water; retention and storage prior to disposal in approved chemical landfill or incinerator equipped for mercury recovery
UN Number: UN1645
Proper Shipping Name: MERCURY NITRATE
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: I (highest danger)
Marine Pollutant: Yes
Special Precautions: Transport only in secure, well-sealed containers; ensure vehicles are labeled and equipped for hazardous materials; notify carriers of risk; avoid combined transport with incompatible chemicals
OSHA: Regulated as a hazardous substance; subject to strict exposure controls
EPA: Listed as a hazardous waste (RCRA code: D009 for mercury, D001 for oxidizer); mercury nitrate emissions tightly controlled under CERCLA
TSCA: Listed on TSCA Inventory
SARA Title III: SARA 313 reportable toxic chemical (environmental release reporting applies to large users)
WHMIS: Classified as Toxic, Corrosive, Dangerous for the environment
Other: Packaging and record-keeping requirements apply in many countries due to toxicity and environmental effects; consult local, regional, and national codes for specific guidance
