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Product Name: Chromium (III) Nitrate Nonahydrate
Synonyms: Chromium Nitrate, Chromium(III) Nitrate Nonahydrate
Chemical Formula: Cr(NO3)3·9H2O
CAS Number: 7789-02-8
Manufacturer: Specify actual supplier or producer details on container label
Recommended Use: Used in laboratory analysis, chemical synthesis, and chrome plating
Contact Information: Emergency contact numbers for chemical exposure or fire outlined by the facility’s safety program
Classification (GHS): Oxidizing solid, Eye irritation, Skin irritation
Signal Word: Warning
Hazard Statements: Causes serious eye irritation; May cause skin irritation; May intensify fire (oxidizer)
Pictograms: Flame over circle, Exclamation mark
Precautionary Statements: Avoid breathing dust; Wash hands thoroughly after handling; Wear protective gloves/eye protection; Keep away from clothing and combustible materials; Store locked up
Emergency Overview: Bright green crystalline solid that releases toxic and irritating fumes under heat; Water soluble; Can pose inhalation risk during handling, especially as fine dust
Chemical Name: Chromium (III) Nitrate Nonahydrate
CAS Number: 7789-02-8
EC Number: 233-394-6
Concentration: 100% for pure solid
Impurities: Typically free of other contaminants, though verifying batch-specific impurity profiles always helps with risk assessment
Inhalation: Move exposed person to fresh air; Seek medical attention if breathing is difficult; Avoid mouth-to-mouth if responder’s health is at risk; Use protective barrier devices
Skin Contact: Wash with copious amounts of soap and water; Remove contaminated clothing and shoes; Obtain medical advice for redness, blistering, or irritation
Eye Contact: Rinse immediately with water for at least 15 minutes, ensuring eyelids are held open; Remove contact lenses
Ingestion: Rinse mouth right away; Never attempt to induce vomiting; Get medical aid promptly and provide information on the material
Notes to Physician: Treat symptomatically; Careful monitoring of respiratory symptoms and potential allergic reactions adds safety
Suitable Extinguishing Media: Water spray, deluge, or fog; Foam and dry chemical use should avoid direct contact with chemical
Unsuitable Extinguishing Media: Avoid dry chemical or CO2 directly on the product as it may intensify combustion
Specific Hazards: Oxidizer; May ignite combustibles especially strong reducers or organic matter
Hazardous Combustion Products: Chromium oxides, nitrogen oxides, toxic fumes
Protective Equipment for Firefighters: Full turnout gear with self-contained breathing apparatus; Keep containers cool by spraying with water
Special Procedures: Approach from upwind; Prevent water runoff contamination
Personal Precautions: Use personal protective gear like gloves, goggles, and dust mask; Avoid formation and inhalation of dust
Environmental Precautions: Prevent product from entering drains, watercourses, or soil; Notify authorities in event of large spill
Cleanup Methods: Avoid breathing dust; Use non-sparking tools to sweep up and collect in sealed, properly labeled waste containers; Wash area with plenty of water
Handling: Handle in a well-ventilated area, preferably within a chemical fume hood; Avoid contact with skin, eyes, and clothing; Never eat, drink, or smoke in work areas; Minimize dust generation during transfers or weighing
Storage: Store in a tightly sealed container in a cool, dry, well-ventilated place; Segregate away from incompatible materials like organic substances, reducing agents, and combustibles; Keep containers upright and protected from moisture and heat
Exposure Limits: Consult local occupational health guidelines; No established OSHA PEL or ACGIH TLV for this compound, but treat dust as a nuisance particulate
Engineering Controls: Use of local ventilation or fume hoods in storage and handling areas
Personal Protection: Safety goggles, lab coat, nitrile or neoprene gloves, dust mask or NIOSH-approved respirator for airborne particles
Hygiene Measures: Wash hands thoroughly after work and before meals; Remove contaminated attire before leaving the work area
Appearance: Dark green crystalline solid
Odor: Odorless
Molecular Weight: 400.15 g/mol
Melting Point: Decomposes before melting; heating causes loss of water of crystallization above 60°C
Solubility: Highly soluble in water
pH (1% solution): Acidic in solution
Boiling Point: Not applicable (decomposes)
Vapor Pressure: Negligible
Density: About 1.85 g/cm³
Other Properties: Does not emit flammable fumes at room temperature; can generate hazardous gases upon heating
Chemical Stability: Stable under proper storage conditions; sensitive to heat and moisture
Reactivity: Strong oxidizer; reacts vigorously with reducing agents, organic material
Hazardous Reactions: Elevated temperature or mixing with flammables can trigger decomposition and gas evolution
Incompatible Materials: Organic matter, strong reducing agents, combustible materials
Hazardous Decomposition Products: Chromium oxides, nitrogen oxides released under fire conditions
Acute Toxicity: Data limited for this specific compound; related chromium(III) salts have low oral acute toxicity
Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Symptoms: Redness, pain, conjunctivitis, respiratory tract irritation, coughing; severe exposures in poorly ventilated booths may worsen asthma or cause chemical pneumonitis
Chronic Effects: Chromium(III) recognized as less hazardous than chromium(VI), but persistent exposures not advised;
Carcinogenicity: IARC: Group 3 (Not classifiable in humans due to limited evidence for trivalent chromium compounds)
Other Data: No reports of mutagenicity or reproductive hazard for chromium(III) nitrate nonahydrate
Ecotoxicity: Toxic to aquatic life in concentrated form; chromium compounds can bioaccumulate in fish and invertebrates
Persistence and Degradability: Chromium(III) tends to bind to sediments and soil, reducing mobility but still presenting potential hazard in sensitive environments
Bioaccumulation Potential: Moderate potential depending on environmental conditions; can persist long term in soils
Other Effects: Release into waterways should be strictly controlled; avoid spreading dust or washing into storm drains; improper disposal can disrupt wastewater treatment processes
Disposal Methods: Collect and dispose of waste through licensed hazardous waste contractor; never release to surface water or regular landfill
Container Disposal: Empty packaging retains residue; triple rinse and send to hazardous waste facility
Regulatory Requirements: Storage and shipment must comply with federal, state, and local regulations for hazardous waste
UN Number: 2720
Proper Shipping Name: Chromium nitrate, not otherwise specified
Transport Hazard Classes: Oxidizing solid (Division 5.1), may require additional “environmentally hazardous” markings
Packing Group: III
Labeling: Oxidizer symbol required for most shipments
Special Precautions: Keep away from combustible cargo; packages should be handled by trained personnel at all times
OSHA Status: Hazardous by definition of Hazard Communication Standard
TSCA Inventory: Listed
SARA Title III: Not classified as a Section 313 toxic chemical for chromium(III); always verify for updated listings
EU Regulation (REACH): Subject to registration and notification as applicable
Other Regulations: Detailed local and international transport, storage, and exposure limits may apply; always refer to the latest workplace safety resources and regulatory bulletins for updates in chemical control and reporting standards
