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Chemical Name: Isononanoic Acid
Synonyms: 3,5,5-Trimethylhexanoic Acid
CAS Number: 3302-10-1
Appearance: Clear, colorless to pale yellow liquid with faint, fatty odor
Common Uses: Manufacture of synthetic lubricants, plasticizers, and coatings
Odor Threshold: Noticeable at low vapor concentrations, typical for carboxylic acids
Solubility: Slightly soluble in water, mixes well with organic solvents like alcohols and esters
Hazard Class: Eye and skin irritant
Signal Word: Warning
GHS Pictograms: Exclamation mark (irritant)
Potential Health Effects: Eye redness, skin discomfort, throat irritation from vapors
Environmental Warning: Possible harm to aquatic life with prolonged exposure or high concentration spills
Combustibility: Flammable above 96°C (205°F); burning releases irritating and potentially harmful gases
Main Ingredient: Isononanoic Acid (>98%)
Remaining Content: Possible traces of related organic acids and water, less than 2%
Impurities: Negligible effect on safety profile, though awareness of purity variance helps avoid accidental reactions
Eye Contact: Rinse cautiously with water for at least 15 minutes, keep eyelids open
Skin Contact: Remove contaminated clothing, wash affected area with soap and water
Inhalation: Move to fresh air, monitor breathing, seek medical help if symptoms persist
Ingestion: Do not force vomiting, rinse mouth, seek immediate medical attention
Symptoms to Watch: Stinging, redness, coughing, sore throat, abdominal pain if swallowed
Suitable Extinguishers: Dry chemical, water fog, carbon dioxide, foam
Special Hazards: Combustion releases carbon oxides and acrid smoke
Protective Equipment: Full protective gear and self-contained breathing apparatus for fire responders
Fires Involving Chemical: Approach from upwind, contain runoff to prevent environmental spread
Personal Protection: Gloves, goggles, chemical-resistant clothing
Environmental Precaution: Avoid discharge into drains or waterways; contain spills with sand or inert absorbent
Cleanup Method: Absorb with soil or sand, shovel into sealed containers for proper disposal
Ventilation: Use local exhaust for vapor-heavy spills indoors
Safe Handling: Use splash goggles, gloves, avoid breathing vapors
Storage Conditions: Store in tightly sealed containers, keep away from heat sources and oxidizers
Incompatible Materials: Avoid storing near strong bases, strong oxidizers, or nitrites
General Hygiene: Wash hands thoroughly after use, remove contaminated clothing and launder before reuse
Exposure Limits: No established OSHA PEL or ACGIH TLV for this specific acid
Engineering Controls: Use local exhaust ventilation in processing or transferring areas
Personal Protection: Safety goggles, chemical-resistant gloves, long sleeves or apron for skin contact prevention
Respiratory Protection: Use approved mask with organic vapor cartridge if exposure risk exceeds acceptable levels
Appearance: Transparent oil-like fluid, colorless to yellow
Odor: Distinct fatty or sour smell
Boiling Point: Around 243-245°C
Melting Point: -40°C
Vapor Pressure: Low, reflects limited volatility at room temperature
Density: Roughly 0.91 g/cm³
Solubility: Water: limited; miscible with organic solvents
Flash Point: Approximately 96°C (open cup)
pH: Not applicable (undiluted liquid); aqueous solutions acidic
Chemical Stability: Remains stable under typical storage and handling
Conditions to Avoid: Heat, open flames, sparks, direct sunlight
Reactivity: May react with strong bases to form salts, produces heat in exothermic neutralization
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritating fumes under combustion
Polymerization: Not reported under normal conditions
Likely Exposure Routes: Skin and eye contact, inhalation, ingestion in rare accidents
Acute Effects: Eye and skin irritation, reversible with prompt care
Chronic Effects: Data limited, but no established mutagenic, carcinogenic, or reproductive risks at controlled workplace exposures
LD50 Oral (Rat): Greater than 2500 mg/kg, reflecting relatively low acute toxicity by ingestion
Sensitization: Unlikely, though repeated or prolonged exposure may enhance irritation
Aquatic Toxicity: May affect fish and aquatic organisms at high concentrations
Persistence and Degradability: Breaks down by natural processes, though acidification of water may occur
Bioaccumulation Potential: Not expected to accumulate significantly in living organisms
Mobility in Soil: Can move through soil, but low water solubility restricts rapid spread
Recommendations: Prevent uncontrolled entry into environment, limit local contamination
Methods: Incinerate in chemical waste facility, or treat as hazardous waste in accordance with local regulations
Container Disposal: Triple rinse or puncture before recycling if allowed, or dispose alongside chemical residues
Additional Steps: Solvents, absorbents, and debris contaminated with Isononanoic Acid should follow chemical waste protocols
UN Number: Classified under organic acids (not always regulated depending on concentration or quantity)
Packing Group: Typically III (low to moderate hazard)
Labeling Requirements: Corrosive, irritant, or environmental hazard, depending on amount and packaging method
Modes of Transport: Road, rail, air, sea — precautions identical for each, prevent container rupture, avoid prolonged heat
Global Inventories: Listed on major chemical inventories such as TSCA (US), EINECS (EU), DSL (Canada), ENCS (Japan)
Workplace Regulations: Controlled handling and exposure per OSHA general industry standards
Environmental Regulations: Manage spills, emissions, and disposal in accordance with Clean Water Act, local chemical management rules
Labeling: Use current GHS standards for hazard statements and pictograms in user country
