Product Name: 3-Chloropropyltrichlorosilane
Chemical Formula: C3H6ClSiCl3
CAS Number: 10025-78-2
Recommended Use: Used in chemical synthesis, surface treatments, and as a silane coupling agent in industrial settings.
Manufacturer Information: Check label or supplier for details; always contact supplier for updated safety practices.
Emergency Contact: Refer to local, regional, or national emergency number for chemical spills or exposures.
GHS Classification: Flammable Liquid (Category 3), Acute Toxicity Oral (Category 4), Acute Toxicity Inhalation (Category 3), Skin Corrosion/Irritation (Category 1B), Eye Damage (Category 1)
Pictogram: Flame, Corrosive, Skull and Crossbones, Exclamation Mark
Signal Word: Danger
Hazard Statements: Harmful if swallowed or inhaled. Causes severe burns to skin and eyes. Reacts with water, forming hydrogen chloride and heat.
Precautionary Statements: Avoid all contact. Use with proper equipment. Never breathe mist or vapors. Keep away from heat, sparks, open flame.
Substance: 3-Chloropropyltrichlorosilane
Concentration: 98-100%
Synonyms: (3-Chloropropyl)trichlorosilane, Chloropropyltrichlorosilane
Impurities: Trace amounts of dichlorosilanes and related silicon compounds may be present due to manufacturing.
Inhalation: Move to fresh air. Keep victim at rest. Seek medical help right away for breathing trouble.
Skin Contact: Remove contaminated clothing. Rinse skin with running water for at least 20 minutes. Get medical attention quickly. Wash clothing before reuse.
Eye Contact: Flush eyes continuously with water for at least 20 minutes, raise eyelids often. Seek immediate ophthalmologist care.
Ingestion: Do not induce vomiting. Rinse mouth with water, only if victim is fully conscious. Get emergency medical help; this substance burns mucous membranes.
Note for Physicians: Symptoms can be delayed. Treat as corrosive chemical injury. Keep airway clear.
Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, or carbon dioxide. Water may react vigorously and cause greater hazard.
Hazards from Combustion: Releases hydrogen chloride, phosgene, silicon oxides, and chlorine on decomposition and fire. Strong irritant and toxic fumes.
Firefighter Protection: Wear full protective suit and self-contained breathing apparatus. Approach fire from upwind.
Firefighting Advice: Prevent runoff from entering drains or water sources. Cool containers exposed to fire with water spray from as far away as possible.
Personal Precautions: Evacuate area. Ventilate space. Eliminate all ignition sources. Only trained personnel with proper equipment should approach.
Environmental Precautions: Avoid discharge into drains, waterways, or soil. Notify authorities if spillage contaminates water or land.
Clean-Up Methods: Cover spill with inert absorbent (sand, earth, vermiculite), place in approved container for disposal. Do not use water directly on the spill. Neutralize residues with care and ventilate area. Decontaminate tools and surfaces after cleanup.
Handling: Use only in well-ventilated areas or fume hood. Wear corrosion-resistant gloves, goggles, face shield, and flame-proof clothing. Prevent contact with water or alcohols. Keep container closed when not in use.
Storage: Store in original, tightly closed container. Keep in cool, dry, well-ventilated area away from heat sources and direct sunlight. Separate from water, alcohols, amines, strong acids, and oxidizers.
Special Requirements: Use corrosion-resistant shelving. Inspect containers routinely for leaks or damage.
Control Parameters: Occupational Exposure Limits not established for this compound; use airborne exposure limits for HCl if generated.
Engineering Controls: Use chemical fume hood or adequate ventilation. Eye wash stations and emergency showers should be accessible.
Personal Protection: Chemical-resistant gloves, splash-proof goggles, face shield, full protective clothing, and suitable respiratory protection for vapors or mist.
Hygiene Measures: Do not eat, drink, or smoke in work area. Wash hands thoroughly after handling and before eating.
Appearance: Clear to light yellowish liquid, sharp irritating odor.
Boiling Point: 117-118°C at 760 mmHg
Melting Point: Not available; remains liquid well below 0°C
Vapor Pressure: 10 mmHg at 20°C
Density: 1.33 g/cm³ at 25°C
Solubility: Reacts violently with water, forming hydrogen chloride and silanols.
Flash Point: 41°C (closed cup)
Autoignition Temperature: 230°C
Other Properties: Hydrolyzes easily; heavier than water.
Chemical Stability: Stable under recommended storage conditions. Hydrolyzes rapidly in presence of moisture or water to form HCl and silanols.
Reactivity: Reacts exothermically and violently with water, acids, alcohols, amines, and other nucleophiles.
Hazardous Decomposition Products: Hydrogen chloride gas, phosgene, silicon oxides.
Incompatible Materials: Avoid water, alcohols, oxidizing agents, strong acids, bases.
Acute Toxicity: Harmful by inhalation, ingestion, and skin absorption. Causes severe burns and tissue destruction.
Skin Corrosion/Irritation: Causes deep burns; rapid onset following contact.
Eye Damage: Permanent injury or blindness can result from brief exposure.
Respiratory Sensitization: Shortness of breath, cough, pulmonary edema possible if vapors are inhaled.
Chronic Effects: Long-term or repeated exposure can result in dermatitis, chronic respiratory or eye problems.
Information on Likely Routes of Exposure: Inhalation, skin, eyes, ingestion. No established carcinogenicity data for this substance, but hydrogen chloride byproduct classified as corrosive and hazardous.
Ecotoxicity: Very toxic to aquatic life due to rapid formation of hydrogen chloride acid.
Persistence and Degradability: Reacts quickly with moisture to generate corrosive and mobile byproducts.
Bioaccumulative Potential: Does not bioaccumulate; hydrolyzes rapidly on release.
Mobility in Soil: Disperses and acidifies soil easily due to hydrolysis; can reach groundwater.
Other Adverse Effects: Rapid acidification may harm plants, aquatic organisms, and microorganisms in the environment.
Disposal Methods: Disposal should always follow local, national, or regional regulations. Treat and neutralize residues through controlled chemical treatment (acid neutralization), keeping all liquids separate from water until fully neutralized. Contaminated packaging and PPE must be treated as hazardous waste.
Avoid Release: Prevent chemical from reaching surface water, sewage, or soil drains. Clearly label waste containers for professional pickup.
UN Number: UN 2987
Proper Shipping Name: Trichlorosilane, 3-chloropropyl-
Hazard Class: 4.3 (Substances which in contact with water emit flammable gases), 8 (Corrosive)
Packing Group: I (High Danger)
Labeling: Flammable Substances, Corrosive
Special Precautions: Only trained personnel should handle shipment, using UN-approved containers. Do not ship with water-based products, incompatible chemicals, or food and feedstuffs.
OSHA: Listed as a hazardous chemical, requiring full hazard communication.
TSCA: Listed in the US Toxic Substances Control Act inventory.
European Regulation: Listed under REACH; subject to restrictions for manufacturing, import, and use.
WHMIS: Classified as Class B (Flammable) and Class E (Corrosive) material.
Other: Must comply with workplace air monitoring, environmental release limits, and proper labeling under applicable region’s chemical safety laws.
