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Name: Succinic Acid
Chemical Formula: C4H6O4
Common Synonyms: Amber acid, butanedioic acid
Appearance: White, odorless crystalline powder, often grainy to the touch
Usage Areas: Food industry as an acidity regulator, pharmaceuticals, some cosmetic products, and as an intermediate in chemical manufacturing
Main Hazards: Eye and skin irritation, potential respiratory discomfort if inhaled as dust, little acute toxicity under regular industrial conditions
Classification: Irritant (GHS and OSHA standards)\
Key Symptoms: Redness, itching, burning on direct contact, coughing or sneezing after inhalation, mild digestive irritation if ingested
Chronic Risks: Prolonged or repeated exposure increases chances of dermatitis
Chemical Composition: Pure substance, over 99% succinic acid by weight in most industrial or laboratory sources
CAS Number: 110-15-6
Impurities: Trace water, minor organic compounds from the fermentation process or crude extraction, rarely present at significant levels
Inhalation: Bring the person to fresh air, loosen tight clothing, seek medical attention if discomfort persists or respiratory symptoms develop
Skin Contact: Rinse thoroughly with water, remove contaminated clothing, use gentle soap as needed, check for ongoing irritation especially in sensitive skin
Eye Contact: Rinse eyes under gentle running water for at least fifteen minutes, do not rub eyes, seek medical help if redness or pain continues
Ingestion: Rinse mouth, avoid inducing vomiting, small accidental intakes usually resolve on their own, observe for gastrointestinal upset and seek medical advice in case of larger quantities
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or foam extinguishers as preferred agents, water spray can help keep adjacent containers cool
Special Hazards: At high temperatures, succinic acid decomposes, forming gases like carbon monoxide and carbon dioxide, as well as irritant fumes
Firefighter Protection: Firefighters should wear protective gear and self-contained breathing apparatus, keep uphill and upwind of smoke if fighting outdoors or in an unventilated setting
Combustion Risk: Not considered highly flammable but can burn if exposed to strong ignition sources, especially when finely dispersed as dust
Personal Precautions: Wear gloves and safety goggles, dust mask in cases of heavy spillage, ensure ventilation
Environmental Precautions: Prevent entry into drains or natural waterways to reduce the risk of acidification
Containment and Cleanup: Sweep up spills without generating dust, place residue in labeled waste containers, mop the area with water to pick up remaining particles
Handling Practices: Open containers gently, avoid rough handling that could release dust into the air, keep the work area clean and dry to minimize slip risk
Storage Conditions: Store in a tightly sealed container, keep out of the reach of children or unauthorized personnel, avoid exposure to high humidity or direct sun
Incompatible Materials: Strong bases, oxidizing agents, strong reducing agents can initiate unwanted reactions or degrade the acid
Ventilation: Use in a well-ventilated area, laboratory hoods or local exhaust can reduce inhalation exposure during weighing and transfer
Protective Equipment: Chemical-resistant gloves, lab coat, goggles or safety glasses
Respiratory Protection: Dust mask recommended for significant handling, avoid use in confined spaces without control measures
Hygiene Measures: Wash hands thoroughly before breaks, after handling, and at the end of the day
Physical State: Solid
Melting Point: 185-190°C
Solubility: Moderately soluble in water, with some solubility in alcohol
Odor: Odorless
Density: About 1.56 g/cm³
pH in Solution: Acidic
Boiling Point: Decomposes before boiling
Color: White to off-white
Stability Under Normal Use: Stable, keeps for months to years in cool, dry storage
Reactivity Concerns: Reacts with bases to form salts, exposure to heat or incompatible materials can degrade the product
Decomposition Products: Carbon dioxide, carbon monoxide, irritating organic fumes
Risk of Polymerization: Not known to polymerize under normal conditions
Acute Toxicity: Low oral toxicity in rodents, high dosages over animal studies only show mild stomach upset
Irritation: Eye contact produces mild to moderate irritation, skin redness in sensitive individuals, inhalation may provoke throat or nose irritation
Sensitization: No strong evidence of allergic reactions, though repeated skin contact can worsen irritation
Long-Term Exposure Effects: No reliable data showing mutagenicity or carcinogenicity, limited information on chronic exposure
Aquatic Toxicity: Practically non-toxic to aquatic life at typical concentrations, but as an acid, high concentrations may affect water pH
Degradability: Biodegrades readily in soil and water, produced naturally in biological systems
Mobility: Highly soluble in water, high mobility in moist soils
Bioaccumulation: No significant bioaccumulation or persistence in organisms
Waste Disposal: Dispose according to local environmental regulations, neutralize with a base under controlled conditions
Container Cleanup: Rinse with water, avoid using open drains for wash solutions
Environmental Impact: Small amounts in normal waste streams break down quickly, large or repeated releases into waterways risk temporary acidification
Transportation Hazard Class: Not classified as hazardous for transport under most international regulations
Packing Considerations: Use sturdy, sealed containers to prevent dust escape
Spillage Protocol: Clean spills promptly, use absorbent materials for larger amounts
Labelling Requirements: GHS and OSHA require ‘irritant’ labeling in workplaces, with basic protective guidance listed
Food Additive Use: Approved in food processing by the US FDA as GRAS (Generally Recognized As Safe) for acidity regulation
Worker Exposure Limits: No established occupational exposure limit for succinic acid in many countries due to low risk
Right-to-Know Regulations: Appears on chemical inventories in North America, Europe, and Asia, accessible to workers and consumers in those jurisdictions
