Product Name: Methyl Phenyl Silicone Oil
Chemical Family: Organosilicone compound
Synonyms: Phenylmethylpolysiloxane, Polydimethylsiloxane with phenyl group
CAS Number: 63148-52-7
Intended Use: Lubricant, release agent, heat transfer medium, electrical insulation fluid
Manufacturer Info: Full company name, address, emergency contact number, product application
Emergency Contact: Details for regional and transport emergencies
GHS Classification: Not classified as hazardous according to GHS
Physical Hazards: Slippery surface risk, can cause falls when spilled
Health Hazards: Mild eye and skin irritant for sensitive individuals, low oral toxicity
Environmental Risks: Can produce slippery surfaces in water, creates physical hazard more than chemical hazard to wildlife
Signal Word: Non-hazardous
Pictogram: None required
Precautionary Statements: Avoid generating mist, maintain proper ventilation, promptly clean up spills to prevent slip hazard
Substance: Methyl Phenyl Silicone Oil
Chemical Identity: Linear organosiloxane polymer containing methyl and phenyl groups
CAS Number: 63148-52-7
Concentration: 100% purity, no significant impurities relevant for classification
Other Components: Occasionally trace siloxane oligomers; above 99% active substance content
Stabilizers: None typically added
General Advice: Move affected individual from exposure with proper attention
Inhalation: Move to fresh air, seek medical advice if symptoms persist
Skin Contact: Wash with soap and water, remove any contaminated clothing
Eye Contact: Rinse immediately with water for at least 15 minutes, seek medical help if uncomfortable
Ingestion: Rinse mouth, give water to dilute, seek medical attention on persistent discomfort
Notes for Doctors: Symptomatic treatment, no specific antidote
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray
Hazards from Combustion: Possible generation of formaldehyde, carbon oxides, and silicone oxides if burned
Protective Equipment: Full protective gear, self-contained breathing apparatus
Fire Precautions: Cool exposed containers with water, prevent run-off entering drains
Further Guidance: Keep upwind, avoid inhaling combustion fumes
Personal Protection: Protective gloves, safety goggles, slip-resistant footwear
Environmental Precautions: Prevent entry into drains and waterways
Containment: Stop source of spill if safe to do so, use absorbent material like sand or earth
Cleanup: Scoop up spill, clean area with detergent and water, dispose according to regulations
Secondary Measures: Mark area for slip risk, ventilate closed spaces
Handling: Avoid eye and prolonged skin contact, handle in well-ventilated areas, use appropriate containment to prevent spills
Storage Requirements: Store in tightly closed original containers, in cool, dry, well-ventilated locations, away from direct sunlight and incompatible materials
Storage Temperature: Maintain ambient conditions, avoid freezing and excessive heat
Incompatible Materials: Strong oxidizers, acids, and bases
Labeling: Ensure containers are clearly labeled, follow workplace safety regulations on storage
Control Parameters: No established occupational exposure limits
Engineering Measures: General or local exhaust ventilation, control airborne concentrations below detectable limits
Personal Protection: Chemical-resistant gloves, safety glasses, lab coat or protective clothing
Respiratory Protection: Not needed under typical conditions, NIOSH-approved mask when mist may form
Workplace Hygiene: Do not eat, drink, or smoke in work areas, wash hands after handling, remove contaminated clothing promptly
Appearance: Clear, colorless to pale yellow liquid
Odor: Faint, slight characteristic odor
Odor Threshold: Not measurable
Boiling Point: Above 200°C, depending on polymer chain
Melting Point: Below -50°C
Flash Point: Typically above 250°C
Evaporation Rate: Negligible at room temperature
Flammability: Not classified as flammable
Vapor Pressure: Less than 0.01 mmHg at 25°C
Vapor Density: Heavy compared to air
Solubility: Insoluble in water, soluble in many organic solvents
Partition Coefficient (n-octanol/water): High, favors organic phase
Viscosity: Varies widely, typically measured in centistokes
Density: 0.98–1.08 g/cm³
Stability: Remains stable under recommended storage and use conditions
Hazardous Decomposition: Thermal breakdown can produce fumes of formaldehyde, silica, and carbon oxides
Reactivity: Avoid strong oxidizers, strong acids, or bases
Polymerization: Does not undergo hazardous polymerization
Conditions to Avoid: Excess heating, open flames, contact with incompatible chemicals
Acute Toxicity: Oral: LD50 in rats > 5000 mg/kg (low toxicity)
Skin and Eye Contact: Causes mild, reversible irritation with prolonged exposure
Inhalation: Low vapor pressure limits exposure; inhalation hazard low without mist
Sensitization: No evidence of skin sensitizing effects
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity: No mutagenic effects detected in standard tests
Chronic Exposure: No significant health impacts reported from routine occupational exposure
Environmental Fate: Low solubility in water, tends to partition to sediments and organic matter
Degradability: Slow degradation under environmental conditions, stable in soil and water
Bioaccumulation: Potential for bioaccumulation due to high log Kow, but ecological impact considered low
Ecotoxicity: Fish and aquatic invertebrates: minimal acute toxicity at environmental concentrations
Mobility: Limited mobility in soil, adsorbs to particulate matter
Long Term Effects: No significant long-term environmental hazards documented
Waste Methods: Collect and dispose through licensed chemical disposal contractor
Incineration: Can be incinerated in approved facilities with after-burner and scrubber
Landfill: Suitable for hazardous waste landfill under local regulations
Sewage Avoidance: Do not discharge to drains or watercourses
Packaging Disposal: Empty containers should be recycled or disposed as chemical waste
UN Number: Not regulated for transport
Transport Hazard Class: Not classified as dangerous goods by road, sea, or air
Packing Group: Not applicable
Special Precautions: Secure packaging to prevent leaks, keep containers upright during transport
Transport Labelling: Not required under current DG regulations
Bulk Transport: Use appropriate sealed containers approved for liquid chemicals
OSHA Status: Not hazardous as defined by OSHA Hazard Communication Standard
TSCA Listing: Listed on the United States TSCA chemical inventory
REACH Status: Registered for appropriate volume band as a substance in Europe
Other Inventories: Compliant with Canadian DSL/NDSL, Australian AICS, Japanese ENCS
Safety, Health, and Environmental: Follow workplace requirements for chemical management, use risk management as per local legislation, maintain documentation for safety audits
