© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Name: Sodium Chromate
Synonyms: Disodium chromate, Sodium chromate(VI)
CAS Number: 7775-11-3
Appearance: Bright yellow, crystalline solid
Odor: No significant smell, not likely to detect inhalation risk with nose
Solubility: Highly soluble in water, creates strong solutions quickly
Common Uses: Used in dyes, corrosion prevention, wood preservation, and as an intermediate for pigment and chemical manufacture
Health Hazards: Strong oxidizer, toxic by ingestion, inhalation, and skin contact
Carcinogenicity: Recognized human carcinogen by IARC and NTP
Effects: Causes burns to skin and eyes, targets kidneys and liver, damages respiratory system
Environmental Impact: Toxic to aquatic life, persistent and mobile in water
Risk Phrases: Toxic, causes severe skin burns, may cause genetic damage
Component: Sodium Chromate
Concentration: Usually over 98 percent pure
Molecular Formula: Na2CrO4
Molecular Weight: 161.98 g/mol
Relevant Impurities: Trace moisture, sodium carbonate
Eye Contact: Rinse continuously with water for at least 15 minutes, remove contacts if possible
Skin Contact: Strip contaminated clothing, wash skin with plenty of water
Inhalation: Move to fresh air, supply oxygen if breathing feels labored
Ingestion: Do not prompt vomiting, rinse mouth, seek medical help immediately
Medical Attention: Hospitalization required for moderate to severe exposure, monitor for kidney and liver damage
Flammability: Not flammable, but increases hazard of burning other substances
Suitable Extinguishing Media: Water spray preferred, do not use dry chemical or foam directly
Hazardous Combustion Products: Produces toxic chromium fumes, sodium oxides
Protective Equipment: Full protective suit, self-contained breathing mask
Special Dangers: Reacts with organic material, paper, and wood, which can cause fire or explosions under certain circumstances
Personal Precautions: Wear chemical-resistant gloves, goggles, protective clothing
Ventilation: Keep area well-ventilated, avoid airborne dust
Spill Cleanup: Use damp method for sweeping up, prevent material from entering drains
Environmental Precautions: Dike run-off water, avoid releases to waterways
Waste Disposal: Place in closed containers for hazardous waste management, label clearly
Handling: Work with local exhaust ventilation, avoid breathing dust or spray
Protective Measures: Never mix with organics or reducing agents
Storage: Store in sealed, corrosion-resistant containers, out of direct sunlight
Separation: Store far from acids, combustibles, flammables, and reducing materials
Labeling: Keep labels clear, visible, and legible at all times
Engineering Controls: Use fume hoods, local exhaust, or closed handling systems
Personal Protection: Respiratory protection, safety goggles, face shields, chemical-resistant gloves, lab coats
Hygiene Measures: Wash hands and face after handling, do not eat or drink near the material
Exposure Limits: OSHA PEL for chromates, ACGIH TLV for hexavalent chromium compounds
Routine Monitoring: Air monitoring in workspaces to catch any increase in chromate dust
Physical State: Solid, crystalline
Color: Bright yellow
Odor: Lacks strong odor
Melting Point: About 792°C
Boiling Point: Decomposes before boiling
Density: 2.73 g/cm³
pH in solution: Strongly basic
Solubility: Highly soluble in water, insoluble in alcohol
Oxidizing Properties: Powerful oxidizing agent, reacts violently with some materials
Stability: Stable under recommended storage conditions
Conditions to Avoid: Exposure to acids, heat, organic materials
Materials to Avoid: Acids, flammable substances, reducing agents, paper, wood
Hazardous Decomposition: Chromic acid, sodium oxide, chromium fumes released if overheated
Reactivity: Oxidizes organic substrates easily, triggering combustion in mixed waste
Route of Entry: Inhalation, ingestion, absorption through skin
Acute Toxicity: Irritates nose, throat, and lungs quickly; causes burns to eyes and skin
Chronic Effects: Leads to ulceration, perforation of nasal septum, cancer of lung and nasal cavity
Target Organs: Kidneys, liver, respiratory system
Genotoxicity: Increases risk of genetic mutations, teratogenic at high exposures
Sensitization: May produce allergic reactions after repeated exposures
Symptoms: Intense abdominal pain, vomiting, kidney failure possible after ingestion
Aquatic Toxicity: Lethal to fish and invertebrates, persists in watercourses
Persistence: Chromium ions remain mobile and toxic in soils and groundwater
Bioaccumulation: Chromium can accumulate in tissues
Spread: Moves quickly in runoff after spills, contaminates large areas
Environmental Risk: Hazardous to local water supplies, aquatic systems, food webs
Waste Treatment: Treat as hazardous waste, stabilize if possible before landfill
Incineration: Only in permitted chemical incinerators with scrubbers and filters
Regulations: Follow city, state, and federal guidelines for toxic inorganic chemical wastes
Container Disposal: Rinse with care, avoid spreading contamination, seal and mark clearly
Pollution Prevention: Prevent entry to water or sewage
Packaging: Use tightly-sealed, corrosion-proof containers, shielded from other cargo
Hazard Class: Strong oxidizer, labeled under hazardous materials regulations
Handling: Trained personnel, avoid damage or leaks in transit
Transport Modes: All shipments subject to strict labeling, notification, and emergency planning
Accident Procedures: Emergency response plans for spills, fire, and exposure during transport required
Government Classification: Listed as hazardous and carcinogenic
Worker Protection: Strict exposure limits set by OSHA, ACGIH, and other agencies
Community Right-to-Know: Disclosure on-site for all quantities used or stored
Water Discharge: Heavily limited by EPA and local bodies
Reporting: Any significant spill or leak must be reported to environmental authorities
Labeling: Obligatory warning labels, hazard symbols, and handling instructions on all containers
