Synonyms: Synthetic Heat Transfer Oil, Thermal Fluid
Product Codes: Varies by region
Hazard Identification
GHS Classification: Not classified as hazardous under Globally Harmonized System
Signal Word: None required
Pictograms: No symbol required
Hazard Statements: May cause eye and skin irritation, prolonged exposure can lead to mild respiratory discomfort, spills form slippery surfaces, product is combustible under fire conditions, inhalation of mist or fumes at elevated temperatures can cause irritation
Precautionary Statements: Avoid contact with eyes, avoid breathing vapors or oil mist, maintain adequate ventilation in handling areas, use proper protective clothing when dealing with large volumes
Composition / Information on Ingredients
Main Ingredient: Alkylaromatic hydrocarbons (90% or more)
Other Ingredients: Additives such as antioxidants (proprietary, less than 3%), performance improvers to resist thermal breakdown, trace paraffinic and naphthenic content (<1%)
CAS Numbers: 64742-56-9 (Solvent Dewaxed Heavy Paraffinic Oil), 68608-26-4 (Alkylbenzenes), specific numbers may vary due to blend
Impurities: Non-significant levels of sulfur compounds, low benzene content, total aromatic hydrocarbons within industry limits
First Aid Measures
Eye Contact: Rinse with clean water for several minutes, remove contact lenses if present and easy to do, seek medical attention if irritation persists
Skin Contact: Wash with plenty of soap and water, remove contaminated clothing, launder before reuse, seek advice for persistent redness or rash
Inhalation: Move to fresh air, keep comfortable for breathing, seek medical attention for symptoms such as coughing, dizziness, or shortness of breath
Ingestion: Call poison control or medical provider, rinse mouth, do not induce vomiting unless directed by medical personnel
Fire-Fighting Measures
Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide, do not use water jet as it may spread burning liquid
Specific Hazards: Vapors heavier than air, can accumulate in low areas or confined spaces, combustion can produce carbon oxides, incomplete combustion may release smoke and irritant gases
Special Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective gear, keep containers cool with water spray if exposed to fire
Flash Point: Typically above 180°C (closed cup)
Accidental Release Measures
Personal Precautions: Keep unnecessary personnel away, avoid contact with spilled material, use non-slip shoes
Environmental Precautions: Prevent entry into watercourses, drains, or confined areas, notify authorities if significant spill reaches environment
Spill Containment: Stop leak if it can be done safely, use sand, earth, or absorbent material to contain, place in suitable container for disposal
Cleanup Methods: Shovel up residue, clean surface thoroughly, ventilate area after containment
Handling and Storage
Handling: Avoid breathing oil mist or vapors, use in well-ventilated areas, avoid skin and eye contact, no smoking near handling operations, transfer with grounded equipment to avoid static discharge
Storage: Store in cool, dry, well-ventilated area away from direct sunlight, incompatible with strong oxidizing agents, keep containers tightly closed, store in original labeled containers
Storage Temperature: Keep below 50°C to maintain product stability
Engineering Controls: Mechanical ventilation or local exhaust to control vapor or mist levels, spill containment for tanks and equipment
Personal Protection: Safety goggles, chemical-resistant gloves (nitrile or neoprene), flame-resistant clothing for high-temperature work, use appropriate respiratory protection for poorly ventilated areas
Hygiene Measures: Wash hands after handling, avoid eating, drinking or smoking while using product, change contaminated clothing promptly
Physical and Chemical Properties
Appearance: Clear to pale yellow liquid
Odor: Mild, hydrocarbon-like
pH: Not applicable (non-aqueous)
Boiling Point: Typically above 300°C
Melting Point: Pour point ranges between -30°C to -12°C, depending on the grade
Flash Point: Greater than 180°C (closed cup)
Vapor Pressure: Very low at ambient temperatures, increases with heat
Relative Density: 0.85–0.90 g/cm³ at 20°C
Solubility in Water: Insoluble
Viscosity: 30–70 cSt at 40°C, varies by model
Stability and Reactivity
Chemical Stability: Chemically stable under normal use and storage
Reactivity: Non-reactive under anticipated conditions
Conditions to Avoid: Extreme heat, sparks, open flame, long-term sunlight exposure
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, smoke, trace formaldehyde at high temperatures
Toxicological Information
Acute Toxicity: Low toxicity by dermal and oral exposure, ingestion of significant amounts can lead to gastrointestinal symptoms
Skin and Eye Contact: May cause mild irritation, prolonged contact may increase severity, not considered corrosive
Inhalation: Oil mist can lead to respiratory tract irritation, usually only a risk at high temperatures or poor ventilation
Chronic Effects: Prolonged skin exposure may lead to defatting or dermatitis, long-term effects rare with good hygiene practices
Carcinogenicity: Not listed by IARC, NTP or OSHA as a carcinogen, highly refined base oils used, benzene content extremely low
Other Effects: Aspiration into lungs during swallowing or vomiting can cause pulmonary injury (similar to other petroleum products)
Ecological Information
Ecotoxicity: Toxic to aquatic organisms in high concentrations, risk increases if released directly into watercourses
Persistence and Degradability: Biodegrades slowly under aerobic conditions, high molecular weight hydrocarbons break down over time
Bioaccumulation: Moderate potential for bioaccumulation in aquatic life if uncontained release occurs
Mobility in Soil: Low to moderate, binds to soil particles, does not dissolve in water
Other Adverse Effects: Spills can cause slippery surfaces and physical fouling, local impacts more significant than widespread effects
Disposal Considerations
Waste Disposal Methods: Take used fluid to authorized waste facility, consider recycling if available, local regulations will specify landfill or incineration for non-recyclable waste
Contaminated Packaging: Empty containers retain residue, should be disposed as hazardous waste or recycled in line with local rules
Special Precautions: Do not pour unused product down drains, avoid contaminating soil and water sources, keep paperwork for traceability
Transport Information
UN Number: Not regulated under standard transport rules (ADR, IMDG, IATA)
Proper Shipping Name: Not classified as dangerous for shipping purposes
Hazard Class: Not applicable
Packing Group: Not applicable
Labels: None required
Other Transport Info: Keep containers upright and secure, avoid temperature extremes, prevent leaks during transport
Regulatory Information
Regulatory Status: Not subject to major international chemical control regulations (REACH, TSCA) as hazardous, meets regulatory purity standards for base oil
Labeling Requirements: No GHS pictograms or hazard statements required for general industrial use, safety data required for workplace management
Inventory Status: Components listed on China IECSC, US TSCA, EU EINECS/ELINCS, and other major registries
Other Requirements: Employers required to inform staff of safe handling, SDS must be available during workplace use, periodic review of guidelines advised
