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Substance Name: Triisopropyl Borate
Chemical Formula: B(OC3H7)3
Synonyms: Boric acid, triisopropyl ester
Intended Use: Often appears in chemical synthesis, especially in organic chemistry and electronics manufacturing.
Appearance: It comes across as a colorless to pale yellow liquid, notable for a faint, alcohol-like odor.
GHS Classification: Flammable liquid, irritant
Signal Word: Warning
Main Hazards: Vapors can catch fire easily, liquid causes eye and skin irritation, and inhalation may irritate respiratory tract.
Pictograms: Flame, exclamation mark as per GHS display standards.
Potential Health Effects: Contact leads to tearing, redness, or a burning sensation in eyes. Prolonged or repeated exposure dries out or cracks skin. Breathing high concentrations could cause coughing, headaches, or even dizziness.
Main Ingredient: Triisopropyl Borate (CAS 5419-55-6)
Concentration: Generally over 95% in laboratory settings.
Impurities: Trace alcohols may be present in small quantities, always worth checking supplier purity information.
Eye Contact: Rinse both eyes under a gentle stream of water for at least 15 minutes, remove contact lenses, continue flushing.
Skin Contact: Remove contaminated clothing, wash exposed skin with water and mild soap.
Inhalation: Move to fresh air, seek comfort in a well-ventilated area, call for help if breathing trouble starts.
Ingestion: Rinse mouth, avoid giving anything by mouth if the person feels drowsy or unconscious, seek immediate medical attention.
Advice to Physicians: Symptomatic care works best; there's no known antidote for borate esters.
Suitable Extinguishing Media: Use dry chemical powder, carbon dioxide, or alcohol-resistant foam.
Unsuitable Media: Water streams might spread burning liquid.
Fire Hazards: Vapor can form explosive mixtures with air, containers may rupture if heated in fire.
Protective Equipment: Full protective gear and self-contained breathing apparatus always help limit risks.
Special Procedures: Stay away from low areas where vapors may settle, use water spray to cool containers, and approach from upwind whenever possible.
Personal Precautions: Ventilate area, remove ignition sources, wear gloves, goggles, and chemical-resistant clothing.
Spill Cleanup: Absorb with sand or inert material, scoop into a chemical waste container.
Environmental Protection: Prevent release into drains, sewers, or waterways, as esters break down into potentially harmful alcohols.
Decontamination: Flush area with water after cleanup, collect waste for disposal at approved facilities.
Handling Tips: Work in well-ventilated areas, ground container and receiving equipment, use spark-proof tools.
Storage Requirements: Keep containers tightly closed, store in a dry, cool place away from sunlight and incompatible substances.
Incompatibilities: Avoid mixing with acids, bases, and strong oxidizers, which can trigger hazardous decomposition.
Storage Facilities: Use flammables-approved lockers, keep readily available spill control supplies nearby.
Recommended Engineering Controls: Fume hoods, exhaust fans, or local ventilation systems limit vapor exposure.
Personal Protective Equipment: Eye protection (goggles or safety glasses), gloves resistant to organic solvents, lab coats or chemical aprons.
Respiratory Protection: Use appropriate masks if airborne concentrations rise above safe thresholds, especially for frequent users.
Hygiene Measures: Wash hands thoroughly after handling, remove contaminated clothing, avoid eating or drinking in chemical areas.
Appearance: One typically sees a clear, colorless liquid with a mild alcohol scent.
Molecular Weight: About 208 g/mol.
Boiling Point: Near 181°C
Melting Point: Below room temperature, so it usually stays liquid
Flash Point: Around 44°C (closed cup), making vapor ignition possible at moderate temperatures
Vapor Pressure: Relatively low at room temperature.
Solubility: Dissolves in common organic solvents and slowly hydrolyzes in water.
Density: About 0.92 g/cm³ at 20°C.
Chemical Stability: Triisopropyl Borate holds up well in dry, controlled environments.
Reactivity: It reacts with moisture, gradually forming boric acid and isopropanol.
Conditions to Avoid: Keep away from heat, open flames, strong acids, and bases to avoid rapid breakdown or fire risk.
Decomposition Products: Burning produces carbon oxides, boron oxides, and irritating fumes that need to be vented.
Polymerization: Not a concern under normal use.
Routes of Exposure: Eyes, skin, inhalation, ingestion.
Acute Symptoms: Redness, burning sensation in eyes, skin irritation, respiratory and throat discomfort.
Long-Term Exposure: Dry or cracked skin, lung irritation with repeated inhalation.
Toxicity Data: Animal studies show moderate toxicity on ingestion and inhalation but less so on skin contact.
Carcinogenicity: No current evidence links this compound to cancer.
Reproductive Effects: Boron compounds may affect reproduction at high or prolonged exposure, so extra care—especially in pregnant individuals—is wise.
Environmental Impact: Breakdown in the environment releases alcohols and boric acid, which can harm aquatic life at high enough levels.
Persistence and Degradability: Hydrolysis leads to environmentally available borates and isopropanol.
Bioaccumulation: Not expected to build up in organisms significantly.
Aquatic Toxicity: Boric acid poses known risks to some plants and aquatic animals; runoff into waterways ought to be prevented.
Recommended Disposal: Collect spilled and waste material in labeled, sealed drums for hazardous chemical disposal.
Recycling: Used material deserves evaluation for reclamation as a feedstock in synthesis processes.
Environmental Protection: Dilute solutions or rinsates shouldn't end up in normal drains or surface waters, best brought to a licensed disposal facility.
Container Handling: Even once emptied, containers hold residue and should go through proper decontamination.
UN Number: Triisopropyl Borate ships as a flammable liquid.
Hazard Class: Typically listed as Class 3 (Flammable Liquids).
Packing Group: Usually within Group III based on flash point and chemical behavior.
Labeling: Requires flammable liquid warning and proper shipping documentation.
Transport Conditions: Ship upright, segregated from food and oxidizers, using leak-proof, sealed containers.
OSHA Regulations: Applies in workplaces handling hazardous chemicals, requiring hazard communication and safety training.
EPA Restrictions: Environmental releases come with federal and often state scrutiny, especially near waterways.
REACH / GHS: Classified for hazards according to European and international chemical safety systems.
Workplace Controls: Many locations require written safety plans and designated chemical hygiene officers.
Labelling and Recordkeeping: Accurate chemical inventory lists and container labels are not optional, and should reflect up-to-date safety data.
