Product Name: Chloromethyl(Methyl)Dimethoxysilane
Chemical Formula: C5H13ClO2Si
Synonyms: (Chloromethyl)methyldimethoxysilane
CAS Number: 2212-10-4
Recommended Uses: Used as a chemical intermediate for silane coupling agents, cross-linking agents in polymers, resin and surface treatment
Manufacturer Information: Contact supplier or manufacturer for further details including emergency numbers
GHS Classification: Flammable liquid (Category 3), Acute toxicity (oral, Category 4), Skin irritation (Category 2), Eye irritation (Category 2A), Specific target organ toxicity - single exposure (Category 3, respiratory tract)
Label Elements: Warning pictograms for flammability, toxicity
Hazard Statements: Flammable liquid and vapor, harmful if swallowed, causes skin and eye irritation, may cause respiratory irritation
Precautionary Statements: Keep away from heat, sparks, open flames, do not breathe mist, wash hands thoroughly after handling, use only outdoors or in well-ventilated area, wear protective gloves and eye/face protection
Emergency Overview: Colorless to pale yellow liquid, strong odorous, may cause burning sensation to skin and eyes
Chemical Name: Chloromethyl(Methyl)Dimethoxysilane
CAS Number: 2212-10-4
Concentration: >95%
Impurities: May contain trace solvents or related silanes
Additive Components: None reported in industrial grades
Mixture or Substance: Pure compound
General Advice: Move affected person to fresh air immediately, keep calm and warm, seek medical attention
Inhalation: Remove individual to uncontaminated air, administer oxygen if breathing is difficult, contact emergency services
Skin Contact: Wash thoroughly with plenty of water for at least 15 minutes, remove contaminated clothing, seek immediate medical advice if irritation persists
Eye Contact: Rinse eyes cautiously with water for several minutes, remove contact lenses if present, continue rinsing, consult an ophthalmologist
Ingestion: Rinse mouth, do not induce vomiting unless directed by medical personnel, call poison center or physician
Most Important Symptoms: Coughing, burning sensation in throat or nose, skin redness, swelling at contact areas
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam, don’t use a solid water stream due to spreading
Fire Hazards: Vapors may form explosive mixtures with air, combustion produces toxic gases such as hydrogen chloride, carbon oxides, silicon oxides
Firefighting Protection: Wear full protective gear and self-contained breathing apparatus, evacuate area if safe firefighting can’t be ensured
Special Procedures: Cool containers exposed to fire with water spray, avoid inhaling smoke and combustion products
Explosion Data: Vapors heavier than air, may travel long distances to ignition sources
Flash Point: Approximately 38°C (closed cup)
Personal Precautions: Evacuate personnel from area, provide adequate ventilation, eliminate ignition sources
Spill Response: Use non-sparking tools and equipment, absorb spillage with inert absorbent (e.g., sand, earth), collect and contain in suitable containers
Environmental Precautions: Prevent entry into waterways, drains, sewers, inform relevant authorities if seepage occurs
Clean-up Methods: Neutralize residue with dilute sodium carbonate solution, ventilate affected area
Protective Equipment: Chemical resistant gloves, goggles, flame-resistant clothing, respirator if mist or vapor is present
Handling Precautions: Avoid inhalation of vapors, prevent contact with skin, eyes, and clothing, use only in well-ventilated areas, ground and bond containers
Storage Conditions: Store in tightly sealed original container, in a cool, dry, well-ventilated place, away from incompatible materials like water, strong bases, and oxidizers
Technical Measures: Install appropriate local exhaust ventilation, use equipment rated for flammable liquids
Incompatibilities: Reacts with water to release hydrochloric acid, avoid storage with strong oxidizing agents
Hygiene Measures: Wash hands thoroughly after handling, remove contaminated clothing and clean before reuse
Occupational Exposure Limits: No established TLV or PEL for this compound, monitor airborne concentrations in workplace
Engineering Controls: Use explosion-proof exhaust ventilation, monitor vapor levels in air
Personal Protective Equipment: Wear chemical-resistant gloves (e.g., nitrile), safety goggles or full-face shield, lab coat or protective coveralls
Respiratory Protection: Use organic vapor respirators if vapor concentrations exceed exposure limits, emergency SCBA recommended for large releases
Environmental Exposure Controls: Avoid release to environment, consider spill containment, monitor air and water in vicinity
Appearance: Colorless to slightly yellow clear liquid
Odor: Pungent, irritating
Boiling Point: 85–86°C
Melting Point: Data not available
Flash Point: 38°C (closed cup)
Vapor Pressure: 22 mm Hg at 25°C
Density: 1.05 g/cm³ at 20°C
Solubility: Reacts with water to form silicone alcohols and hydrochloric acid
pH: Not applicable (reacts with water)
Partition Coefficient: Not determined
Viscosity: Low, mobile liquid
Flammability: Flammable liquid
Chemical Stability: Stable under standard storage and handling conditions
Conditions to Avoid: Heat, sparks, open flames, humidity
Materials to Avoid: Strong bases, oxidizing agents, water, alcohols
Hazardous Decomposition: Thermal breakdown produces hydrogen chloride, carbon oxides, silicon oxides
Polymerization: No reported hazardous polymerization
Special Reactivity: Hydrolyzes rapidly in presence of water to form methanol, hydrochloric acid, and siloxanes
Routes of Exposure: Inhalation, ingestion, skin contact, eye contact
Acute Toxicity: Harmful if swallowed, may cause chemical burns to skin and eyes, respiratory irritation on inhalation
LD50 (Oral, rat): Estimated 300–2000 mg/kg
Skin Corrosion/Irritation: Causes irritation and possible chemical burns
Serious Eye Damage/Irritation: Causes significant irritation, risk of serious injury
Respiratory Sensitization: Possible respiratory tract irritation
Carcinogenicity/Mutagenicity: Insufficient information to determine carcinogenic potential
Long Term Effects: Prolonged exposure may damage mucous membranes, possible effects on liver and kidneys
Ecotoxicity: May be toxic to aquatic life due to hydrolysis products
Aquatic Toxicity: Hydrolyzes to produce methanol and hydrochloric acid, both harmful to aquatic organisms
Persistence and Degradability: Rapidly hydrolyzes in water forming easily biodegradable fragments
Bioaccumulative Potential: Low, but hydrolysis products may accumulate
Mobility in Soil: Mobile in soils, especially in presence of water
Other Adverse Effects: Avoid release to environment to prevent ecosystem impacts
Waste Treatment Methods: Incinerate at approved facility using methods that control release of hydrochloric acid
Disposal Containers: Use containers designed for flammable, corrosive wastes
Labeling: Clearly mark waste containers with correct contents and hazard information
Regulations: Dispose in accordance with all local, regional, and national laws
Special Precautions: Do not allow substance or waste to reach groundwater, water courses, or sewage systems
UN Number: UN1993
Shipping Name: Flammable Liquid, N.O.S. (Chloromethyl(Methyl)Dimethoxysilane)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II
Label Requirements: Flammable Liquid, Corrosive
Special Transport Recommendations: Secure containers against shifting, avoid temperature extremes, emergency spill kit available during transport
Environmental Hazards: Marine pollutant, avoid leaks or spills during loading/unloading
Classification: Subject to regulation under flammable and chemical safety laws
Safety, Health, and Environmental Regulation: OSHA (US), REACH (EU), and other national bodies classify as hazardous
Inventory Status: Listed on TSCA, EINECS, and other chemical inventories where applicable
Specific Regulatory Information: Consult local, state, national, and international regulations for requirements relating to handling, storage, and use
Restrictions: Use restricted for professional/industrial use, special permits may apply
Additional Information: Safety data sheet available from manufacturer or supplier upon request
