Product Name: Trioctylmethylammonium Hydrogen Sulfate
Chemical Formula: C25H56NO4S
CAS Number: 69689-55-0
Synonyms: Methyltrioctylammonium Hydrogen Sulfate, MTOAHS
Intended Use: Phase transfer catalyst, industrial chemical
Supplier: Contact local distributor or manufacturer for details including address and emergency phone number
Emergency Contact: Refer to local, regional, or national poison control center numbers according to storage location
Recommended Restrictions: Not for use in food, drug, or cosmetic manufacturing
GHS Classification: Acute toxicity, Oral (Category 4); Skin irritation (Category 2); Serious eye irritation (Category 2A); Hazardous to aquatic environment, chronic (Category 3)
Signal Word: Warning
Hazard Statements: Harmful if swallowed; Causes skin irritation; Causes serious eye irritation; May cause long lasting harmful effects to aquatic life
Pictograms: Exclamation mark and environmental hazard symbol
Precautionary Statements: Avoid breathing dust/fume/gas/mist/vapors/spray, Wear protective gloves/clothing/eye protection/face protection, Wash skin thoroughly after handling, Do not eat, drink, or smoke when using this product, Avoid release to the environment
Routes of Exposure: Inhalation, skin, ingestion, contact with eyes
Most Important Symptoms/Efffects: Redness, burning, stinging, abdominal pain, nausea, vomiting
Chemical Name: Trioctylmethylammonium hydrogen sulfate
Concentration: ≥ 97% by weight
Impurities: None expected above 1% threshold; trace impurities possible based on synthetic route
Additives: No added stabilizers, dyes, or fillers
Inhalation: Remove to fresh air immediately, keep individual at rest, seek medical advice if symptoms persist
Skin Contact: Remove contaminated clothing, rinse affected area with plenty of running water for at least 15 minutes, use mild soap, seek medical attention if irritation develops or persists
Eye Contact: Rinse cautiously with clean water for several minutes, remove contact lenses if present and easy to do, continue rinsing, get immediate medical advice
Ingestion: Rinse mouth with water thoroughly, do not induce vomiting unless advised by a medical professional, seek urgent medical care
Most Important Symptoms: Symptoms may include skin/eye redness, itching, stomach upset if ingested, respiratory tract irritation from inhalation of dust or aerosol
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray
Unsuitable Extinguishing Media: Do not use direct water jet, can spread burning product
Specific Hazards: Toxic fumes (sulfur oxides, nitrogen oxides, ammonia, carbon oxides) may form during combustion
Protective Equipment: Firefighters should wear full protective gear and self-contained breathing apparatus
Precautions: Evacuate area, use water spray to cool containers exposed to fire, prevent firefighting runoff from entering drains or water courses
Personal Precautions: Avoid dust formation, ventilate area, wear appropriate personal protective equipment including gloves, goggles, and respirator
Environmental Precautions: Prevent product from entering soil, sewers, waterways, or groundwater
Methods for Cleanup: Collect spill with absorbent, non-combustible material such as sand or vermiculite, place in suitable container for disposal, clean spill site with water and detergent, ventilate area after product removal
Handling: Use only in well-ventilated areas, avoid contact with skin, eyes, or clothing, avoid inhaling dust or mist, do not eat/drink/smoke during handling, practice good industrial hygiene
Storage: Store in original tightly sealed container in a cool, dry, well-ventilated place away from moisture, heat, and incompatible materials such as strong oxidizers and acids
Incompatibles: Strong oxidizing agents, strong acids, strong bases
Specific Storage Requirements: Keep container closed and out of direct sunlight, avoid freezing or excessive heat, check local regulations for specific storage codes
Engineering Controls: Mechanical ventilation, local exhaust, fume hood
Personal Protective Equipment: Chemical-resistant gloves (e.g., nitrile), safety goggles or face shield, lab coat or impervious apron, respiratory protection if ventilation inadequate
Occupational Exposure Limits: No occupational exposure limits established for this compound
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling, do not eat, drink, or smoke in work areas, remove contaminated clothing and wash before reuse
Appearance: Clear to pale yellow viscous liquid or oily solid
Odor: Faintly amine-like
Melting Point/Freezing Point: Estimated 18-22°C (literature varies based on grade and purity)
Boiling Point: Decomposes before boiling
Flash Point: >100°C (non-volatile oil)
Solubility: Miscible in methanol, ethanol, partially soluble in water
Vapor Pressure: Low (data not available, assume low volatility)
Density: Around 0.95-0.98 g/cm³ at 20°C
pH (10% solution): 4–5
Partition Coefficient (n-octanol/water): Not available
Decomposition Temperature: >200°C
Viscosity: Moderate to high; material is thick at room temperature
Chemical Stability: Stable under normal storage and handling at room temperature
Reactivity: Not expected to react violently under usual conditions
Conditions to Avoid: Heat, flames, sparks, direct sunlight, moisture
Incompatible Materials: Strong oxidizers, strong acids, strong bases
Hazardous Decomposition Products: Sulfur oxides, nitrogen oxides, ammonia, carbon monoxide and dioxide may be released in fire or decomposition
Polymerization: No data suggesting hazardous polymerization under recommended conditions
Acute Toxicity: Oral LD50 (rat) estimated 300–2000 mg/kg, may cause gastrointestinal upset or more serious effects at high doses
Chronic Effects: Chronic exposure not well-studied; avoid prolonged or repeated skin contact
Skin Corrosion/Irritation: Causes moderate irritation based on similar quaternary ammonium compounds
Serious Eye Damage/Irritation: Causes eye irritation; risk of serious eye damage not excluded
Respiratory or Skin Sensitization: Not known as a sensitizer, but avoid prolonged exposure
Carcinogenicity, Mutagenicity, Reproductive Toxicity: No data available for this compound; structurally related compounds not classified as carcinogens
Specific Target Organ Toxicity: No data available, avoid exposure
Ecotoxicity: May be toxic to aquatic life with long lasting effects, especially in concentrated spills
Persistence and Degradability: Not rapidly biodegradable, may persist in soil or sediments
Bioaccumulative Potential: Potential for bioaccumulation based on hydrophobic chain structure, no direct test results
Mobility in Soil: Low to medium; cationic surfactant characteristics suggest adsorption to soils and sediments
Other Adverse Effects: Avoid direct release to environment, particularly waterways, ditches, storm drains
Waste Treatment Methods: Dispose of content and container in accordance with local, regional, and national regulations
Recommended Disposal: Incineration at chemical waste facility preferred; do not release into drains or water courses
Contaminated Packaging: Rinse thoroughly, puncture/deface before recycling or disposal as hazardous waste
Special Precautions: Professional waste disposal companies and licensed handlers recommended for larger volumes
UN Number: Not assigned
Proper Shipping Name: Not regulated under most international transport scenarios as a dangerous good
Transport Hazard Classes: Not classified as a flammable or toxic liquid
Packing Group: Not assigned
Environmental Hazards: Avoid accidental release to aquatic environments
Special Precautions: Avoid extreme temperatures, use sealed containers, check country-specific requirements for chemical shipments
TSCA (USA): Listed or regulated; verify current status
REACH (Europe): Noted on REACH inventory; use subject to registration or reporting requirements
GHS Label Elements: Mandated per recent UN GHS classification
Other Regulations: Subject to workplace safety standards set by national labor and chemical safety acts; not classified as controlled substance
Restriction on Use: Not for use in drugs, food contact, or personal care unless regulations allow
SARA 313 (USA): Not subject to reporting under this act
Canadian Domestic Substances List (DSL): Status should be checked with supplier
State/Provincial Regulations: Must comply with all local chemical control and right-to-know laws
