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Chemical Name: trans-Aconitic Acid
Common Names: Aconitic Acid, trans-1-Propen-1,2,3-tricarboxylic acid
Molecular Formula: C6H6O6
Recommended Use: Chemical intermediate, research
Physical Appearance: White crystalline powder
Major Hazards: Causes mild skin and eye irritation; inhalation may irritate respiratory passages; ingestion can produce gastrointestinal discomfort
Pictogram Guidance: Exclamation mark—indicates moderate irritant properties
Signal Word: Warning
Key Symptoms: Redness, itching, discomfort in affected area, possible cough if dust inhaled
Environmental Risks: Low acute toxicity to aquatic organisms but can alter local water pH if spilled in bulk
Main Ingredient: trans-Aconitic Acid, purity often above 98% for laboratory-grade
CAS Number: 585-84-2
Impurities: Minor traces of cis-aconitic acid or isocitric acid, depending on production method
Ingestion: Rinse mouth thoroughly with water, seek medical attention if discomfort persists
Skin Contact: Wash with soap and plenty of water, remove contaminated clothing, consult a physician if irritation continues
Eye Contact: Flush with water for several minutes, lifting eyelids, seek medical help for persistent irritation
Inhalation: Move affected person to fresh air, monitor for symptoms like coughing, seek medical attention if breathing difficulty develops
Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Special Hazards: Thermal decomposition can produce carbon monoxide and carbon dioxide
Advice for Firefighters: Wear self-contained breathing apparatus and protective clothing
Fire/Explosion Risks: Not considered highly flammable but significant quantities can add fuel to a blaze
Spill Cleanup: Scoop up spilled powder, avoid generating dust, gather in suitable waste container
Personal Precautions: Use protective gloves, goggles, dust mask
Environmental Precautions: Minimize runoff into water systems, use absorbents to contain spread
Disposal: Collect and properly dispose of material through chemical waste management
Handling: Use proper protective equipment, avoid creating dust, work in a well-ventilated area
Storage: Keep in tightly sealed container, store in cool, dry place away from incompatible materials like strong bases
Precautions: Avoid eating, drinking, or smoking during handling
Engineering Controls: Operate in fume hoods or use local exhaust ventilation
Personal Protection: Nitrile gloves, chemical goggles, dust mask or respirator for bulk operations
Skin Protection: Laboratory coat
Eye Protection: Use splash-resistant goggles or safety glasses
Respiratory Protection: NIOSH-approved particulate respirator if dust is present
Physical State: Solid
Appearance: White crystals
Melting Point: Around 192–195 °C
Solubility: Soluble in water
Odor: Odorless
Density: Approximately 1.59 g/cm³
pH (1% solution): Acidic
Chemical Stability: Stable under recommended storage conditions
Incompatible Materials: Strong oxidizers, strong bases
Hazardous Decomposition: Carbon oxides under fire conditions
Reactivity: Unlikely to present hazard under normal use
Acute Toxicity: Low (animal studies suggest high median lethal dose values)
Inhalation: Dust may trigger mild respiratory irritation
Ingestion: Large amounts may cause upset stomach, diarrhea
Skin/Eye Contact: Possible irritation, not corrosive
Long-Term Effects: No data suggesting carcinogenicity or reproductive toxicity
Environmental Persistence: Biodegradable in soil and water
Aquatic Toxicity: Not classified as hazardous, but avoid direct release into waterways
Mobility: Dissolves easily in water, disperses rapidly
Bioaccumulation: Not expected to bioaccumulate
Waste Handling: Avoid dump into sewers; treat as chemical waste
Incineration: Permissible in approved facility
Packaging: Rinse containers before disposal, follow local disposal regulations
UN Classification: Not regulated for transport
Hazard Class: Not assigned
Packing Group: Not assigned
Transport Considerations: Store tightly sealed; prevent from moisture during transportation
GHS Compliance: Classified as irritant
TSCA Listing: Present on inventory
Labelling: Requires appropriate hazard statements regarding irritation
Restrictions: None under major international chemical control laws, but workers advised to follow standard laboratory safety practices
