Product Name: Acetyl tri-n-butyl citrate
Chemical Name: 1,2,3-Propanetricarboxylic acid, 2-(acetyloxy)-, tributyl ester
Synonyms: ATBC, Citroflex A-4
CAS Number: 77-90-7
Recommended Use: Commonly functions as a plasticizer in polymers and plastics. Used in children’s toys, medical devices, and food packaging.
Supplier Details: Manufacturer contact details should be referenced for accuracy and responsibility during transport and storage.
GHS Classification: Not classified as hazardous according to OSHA Hazard Communication Standard (29 CFR 1910.1200).
Label Elements: Not required under GHS for this substance. No signal words or pictograms.
Hazard Statements: May cause slight eye and skin irritation if contacted in large amounts. Inhalation of mist may cause mild respiratory irritation.
Precautionary Statements: Keep container tightly closed. Avoid breathing mist or vapor. Wash hands thoroughly after handling.
Chemical Composition: Acetyl tri-n-butyl citrate (≥99%)
CAS Number: 77-90-7
Impurities: None likely to contribute to classification or hazard under typical use conditions.
Other Components: Contains no hazardous additives according to supplier specification.
Inhalation: Move individual to fresh air. If breathing is difficult, provide oxygen or seek medical attention if symptoms continue.
Skin Contact: Remove contaminated clothing. Wash affected area with mild soap and water. If irritation persists, get medical advice.
Eye Contact: Rinse cautiously with water for at least 15 minutes. Remove contact lenses if present and easy to do. Consult a physician if eye irritation develops.
Ingestion: Rinse mouth with water. Seek medical attention if feeling unwell or if large amounts are swallowed.
Symptoms: May experience irritation or discomfort if exposed over prolonged periods.
Suitable Extinguishing Media: Use water spray, foam, dry powder, or carbon dioxide for extinguishing fires.
Unsuitable Extinguishing Media: Do not use high-pressure water jets.
Special Hazards: May produce carbon oxides and unidentified toxic gases during combustion.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Advice for Firefighters: Cool containers with water spray to prevent pressure build-up.
Personal Precautions: Use personal protective equipment. Avoid breathing vapors or mist. Ensure adequate ventilation.
Environmental Precautions: Prevent entry into drains or waterways. Contain spills using sand, earth, or other inert absorbent materials.
Methods for Clean Up: Collect spilled liquid with absorbent material and place in suitable containers for disposal. Clean contaminated area with water and detergent.
Reference to Other Sections: See Exposure Controls/Personal Protection and Disposal Considerations for further guidance.
Safe Handling: Keep containers closed when not in use. Avoid excessive heat, sparks, and open flames. Prevent inhalation of vapors.
Hygiene Measures: Wash hands before eating, drinking, or smoking.
Storage Conditions: Store in a cool, dry, and well-ventilated place. Protect from direct sunlight and incompatible materials (strong oxidizers).
Incompatible Materials: Strong oxidizing agents can trigger hazardous reactions.
Occupational Exposure Limits: No exposure limits established by OSHA, ACGIH, or NIOSH for this product.
Engineering Controls: Use local exhaust ventilation or process enclosure to minimize inhalation. Maintain eye wash stations and safety showers near handling areas.
Personal Protective Equipment: Splash goggles, chemical-resistant gloves, and protective clothing recommended during bulk handling.
Respiratory Protection: Use an approved air-purifying respirator if exposure to vapors or mists exceeds acceptable limits.
Environmental Controls: Prevent contamination of soil and water sources.
Appearance: Clear, colorless to pale yellow oily liquid
Odor: Faint, characteristic ester odor
pH: Not applicable
Melting Point: -80°C
Boiling Point: 327°C
Flash Point: 199°C (Closed cup)
Evaporation Rate: Negligible under normal conditions
Flammability: Not easily flammable
Vapor Pressure: 0.01 mm Hg at 25°C
Density: 1.05 g/cm³ at 25°C
Solubility in Water: Slightly soluble
Viscosity: Approximately 24 mPa.s at 20°C
Chemical Stability: Chemically stable under standard conditions of storage and use.
Thermal Decomposition: Decomposes at high temperatures to produce carbon monoxide, carbon dioxide, and other organic compounds.
Hazardous Reactions: Strong oxidizers may initiate hazardous reactions.
Conditions to Avoid: Excessive heat, open flames, and long-term exposure to strong ultraviolet light.
Incompatible Materials: Avoid contact with strong acids, alkalis, and oxidizing agents.
Routes of Exposure: Dermal, inhalation, oral
Acute Toxicity: Oral LD50 (rat): > 25,000 mg/kg; practically non-toxic by ingestion.
Skin Corrosion/Irritation: May cause mild irritation after prolonged or repeated exposure.
Serious Eye Damage/Irritation: Mild eye irritant possible.
Respiratory or Skin Sensitization: Not expected to be a sensitizer.
Chronic Toxicity: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity in available studies.
Other Health Effects: Prolonged exposure can lead to slight irritation of eyes and skin.
Ecotoxicity: Low acute toxicity to aquatic organisms; studies on Daphnia and fish report LC50/EC50 values above 100 mg/L.
Persistence and Degradability: Readily biodegradable in the environment with high removal rates observed in standard test systems.
Bioaccumulative Potential: Low bioaccumulation expected, supported by partition coefficient values (Log Kow ≈ 4).
Mobility in Soil: Low mobility anticipated, due to low water solubility and strong sorption to soils.
Other Adverse Effects: Not expected to pose significant environmental hazards under normal usage and disposal conditions.
Waste Disposal Methods: Dispose of in accordance with local, regional, and national regulations. Preferred method involves incineration or authorized waste treatment facilities.
Container Disposal: Empty containers retain product residue and should be handled in accordance with good industrial hygiene and safety practices.
Precautions: Avoid disposal to surface water bodies. Always check with authorities about specific requirements and available recycling or disposal solutions.
Contaminated Packaging: Triple rinse containers before disposal or recycling.
UN Number: Not regulated as a hazardous material for transportation.
Transport Hazard Class: Not classified under DOT, IMDG, or IATA.
Packing Group: Not applicable
Special Precautions: Protect containers from physical damage and keep them tightly sealed during transport.
Environmental Hazards: Not considered a marine pollutant or environmentally hazardous according to transport regulations.
US OSHA Status: This material is not considered hazardous as defined under OSHA regulations.
TSCA Inventory: Listed
DSL/NDSL (Canada): Listed
REACH Status (EU): Registered as a phase-in substance; not classified as hazardous.
Other Regulations: Not subject to stringent control under major global chemical conventions. May be used in food contact applications per FDA and EU food regulations.
Right-to-Know Listings: Not listed under California Proposition 65 or other right-to-know acts.
Chemical Safety Assessment: Not required as the substance is not classified as hazardous according to available studies and regulatory findings.
