Product Name: Phenyltrichlorosilane
Chemical Formula: C6H5SiCl3
CAS Number: 98-13-5
Synonyms: Trichlorophenylsilane, Silane, trichloro-phenyl
Recommended Use: Intermediate for silicone production, surface modification agent
Manufacturer: Contact chemical supplier for details
Emergency Telephone: Chemtrec: 1-800-424-9300
GHS Classification: Acute toxicity (Oral, Inhalation), Skin Corrosion, Serious Eye Damage
Pictograms: Skull and crossbones, Corrosive
Signal Word: Danger
Hazard Statements: Toxic if inhaled or swallowed; Causes severe skin burns and eye damage; Reacts violently with water, releasing hydrogen chloride gas
Precautionary Statements: Avoid breathing vapors; Wear protective gloves, clothing, and face protection; Keep away from moisture; Wash skin after handling
Chemical Name: Phenyltrichlorosilane
Concentration: 99% or higher
Impurities: Trace amounts of dichlorophenylsilane and chlorobenzene possible
Formula: C6H5SiCl3
Molecular Weight: 227.55 g/mol
Inhalation: Move person to fresh air without delay; Provide oxygen if breathing is difficult; Seek medical attention immediately
Skin Contact: Remove contaminated clothing; Rinse skin thoroughly with water for at least 15 minutes; Seek medical care if irritation develops
Eye Contact: Rinse eyes with water for at least 15 minutes, keeping eyelids open; Immediate medical attention needed
Ingestion: Rinse mouth with water; Do not induce vomiting; Get emergency medical help
Advice for Medical Personnel: Hydrolysis in the body produces corrosive hydrogen chloride; Monitor for pulmonary irritation and treat with supportive care
Suitable Extinguishing Media: Dry chemical, carbon dioxide, or foam; Do not use water directly on substance due to violent reaction
Specific Hazards: Reacts with water or moisture, producing flammable hydrogen and corrosive hydrogen chloride; Risk of explosion in closed or heated containers
Protective Equipment: Self-contained breathing apparatus and full chemical protective clothing
Firefighting Instructions: Fight fire from safe distance; Cool adjacent containers with water spray without contact with the chemical; Prevent release of gases
Personal Precautions: Put on suitable protective gear, including respirator, gloves, goggles, and chemical-resistant clothing; Evacuate unnecessary personnel
Environmental Precautions: Prevent entry into water sources, drains, or soil; Notify authorities if significant spill occurs
Containment Methods: Cover with dry earth, sand, or noncombustible absorbent; Avoid using water
Cleanup Procedures: Collect spilled material in container for disposal; Ventilate area; Wash residue with sodium bicarbonate solution
Handling Precautions: Operate in chemical fume hood or well-ventilated area; Avoid inhalation, ingestion, and skin or eye contact; Use spark-proof tools
Hygiene Practices: Wash thoroughly after handling; Do not eat, drink, or smoke near material
Storage Conditions: Store in tightly sealed, corrosion-resistant containers in a cool, dry place; Protect from moisture and water; Keep away from incompatible materials such as strong bases, amines, and alcohols
Special Requirements: Regularly check containers for leaks; Separate from oxidizers and combustibles
Engineering Controls: Use under fume extraction and local exhaust ventilation
Exposure Limits: No OSHA PEL or ACGIH TLV specific to phenyltrichlorosilane; Observe workplace hydrogen chloride limits (ACGIH TLV: 2 ppm ceiling)
Personal Protective Equipment (PPE): Chemical-resistant gloves (e.g., butyl rubber), splash-proof goggles, flame-resistant lab coat, rubber boots
Respiratory Protection: NIOSH-approved air-purifying respirator (full facepiece), or supplied-air system for heavy exposure
General Protection: Emergency eye wash and safety shower in workspace
Appearance: Clear, colorless to pale yellow liquid
Odor: Strong, pungent, similar to hydrochloric acid
Melting Point: -39°C
Boiling Point: 213°C at 760 mmHg
Density: 1.315 g/cm3 at 25°C
Vapor Pressure: 1 mmHg at 44°C
Solubility: Reacts with water; soluble in organic solvents
Flash Point: 87°C (closed cup)
Auto-Ignition Temperature: Not determined
pH: Not applicable (reacts with water)
Chemical Stability: Stable under dry, cool conditions in sealed containers
Reactivity: Reacts violently with water, alcohols, amines, strong bases
Hazardous Decomposition: Hydrogen chloride gas, phenylsiloxanes, trace organosilicon compounds
Polymerization: Not expected under normal conditions
Incompatibles: Moisture, oxidizing agents, strong acids or bases, alkali metals
Potential Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Oral LD50 (rat): 1860 mg/kg; Inhalation LC50 (rat): data not available
Skin Corrosion: Strong corrosive action causes burns and blisters
Eye Damage: Severe irritation or irreversible eye injury possible
Chronic Effects: Prolonged or repeated exposure may produce delayed respiratory effects and skin disorders
Other Data: Hydrolysis forms hydrochloric acid, which can injure skin, eyes, and respiratory tract
Aquatic Toxicity: Hydrolysis byproducts (HCl and silanols) harmful to aquatic organisms
Persistence and Degradability: Rapid hydrolysis in water forms persistent siloxanes; organic solvent presence increases mobility
Bioaccumulation: Not expected to accumulate in organisms
Soil Mobility: High mobility in case of spill, but reacts rapidly with water and soil moisture, leading to localized damage
Other Adverse Effects: Toxic to aquatic and terrestrial ecosystems if released accidentally
Disposal Methods: Incinerate with proper pollution controls; local industrial hazardous waste protocols may apply
Containers and Packaging: Rinse with large volumes of neutralizing solution; treat as hazardous waste
Environmental Precaution: Do not allow to reach sewers, surface or groundwater; consult local regulatory authorities for regulated disposal
UN Number: UN2987
UN Proper Shipping Name: Trichlorophenylsilane
Transport Hazard Class: 6.1 (Toxic substance)
Packing Group: II
Marine Pollutant: Yes
Transport Precautions: Secure upright in well-ventilated container; label correctly for hazard and corrosiveness; avoid physical shock and moisture
OSHA Regulation: Classified as hazardous; requires communication of hazards to workers
TSCA Inventory: Listed
SARA Title III: Subject to reporting under 311/312 (acute hazard); not listed on Section 313
Other Regulations: Subject to state, national and international chemical safety and environmental law; employers must provide training and emergency planning on this substance
