Properties of titanium tetrachloride

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Properties of titanium tetrachloride 1. Physical and chemical constants: National standard code 81051; CAS number 7550-45-0; Chinese name: Titanium tetrachloride; English name: Titanium tetrachloride； Titanic chloride, also known as titanium chloride, has the molecular formula TiCl4. It appears as a colorless or slightly yellow liquid with an irritating acidic odor. It emits smoke in air. Molecular weight: 189.71. Vapor pressure: 1.33 kPa (21.3°C). Melting point: -25°C. Boiling point: 136.4°C. Solubility: Soluble in cold water, ethanol, and dilute hydrochloric acid. Density: Relative density (water = 1): 1.73. Stability: Stable. Hazard symbol: 20 (acidic corrosive substance). Main uses: Used in the production of titanium salts, iridizing agents, artificial pearls, smoke screens, pigments, and fabric mordants. 2. Environmental impact: I. Health hazards. Routes of exposure: Inhalation, ingestion. Health hazards: Direct skin contact with liquid titanium tetrachloride can cause burns of varying degrees. Its smoke and dust have a strong irritating effect on the respiratory mucosa. Mild poisoning presents with asthmatic bronchitis, while severe cases involve difficulty breathing, accelerated respiration and pulse, elevated body temperature, coughing, and may progress to pulmonary edema. II. Toxicological data and environmental behavior: Toxicity: It belongs to the highly toxic category. Acute toxicity: LC50 400 mg/m3 (inhalation, rats). Hazardous characteristics: Releases heat when heated or in contact with water, producing toxic and corrosive fumes. Combustion (decomposition) products: chlorides, titanium oxide. 3. On-site emergency monitoring methods: 4. Laboratory monitoring methods: Titration method (EPA Method 9252); Gas chromatography, as referenced in the \"Handbook of Analytical Chemistry\" (Volume 4, Chromatographic Analysis), Chemical Industry Press. 5. Environmental standards: The maximum allowable concentration of harmful substances in the air in workshops in the former Soviet Union is 1 mg/m3. 6. Emergency response measures: I. Emergency response to leaks – Evacuate people from the contaminated area to a safe zone; prevent unauthorized personnel from entering the contaminated area. It is recommended that emergency responders use positive-pressure self-contained breathing apparatus and wear chemical protective clothing. Do not come into direct contact with the leak; seal it up only when safety is ensured. **Fog slows down evaporation (or diffusion), but it should not be applied directly to the leak or the location of the leak. Sprinkle soda ash on the ground, then rinse it with plenty of water; the diluted washwater is discharged into the wastewater system. In the event of a large-scale leak, it is best not to use water treatment, but to remove it under the guidance of technical personnel. II. Protective Measures: Respiratory protection: When there is a possibility of exposure to its vapors, a gas mask should be worn. Wear a gas mask if necessary. Eye protection: Wear chemical safety goggles. Protective clothing: Wear work clothes (made of corrosion-resistant materials). Hand protection: Wear rubber gloves. Other: Take a shower after work **. Store clothes contaminated with toxins separately, and use them after washing. Maintain good hygiene* habits. III. First aid measures: Skin contact: Remove the poison as quickly as possible using soft paper or cotton, then rinse thoroughly with water. If there is a burn, seek medical treatment. Eye contact: Immediately lift the eyelids and rinse with flowing water for 10 minutes, or rinse with a 2% sodium bicarbonate solution. Seek medical attention. Inhalation: Quickly move to a place with fresh air. Keep the airway clear. Oxygen is administered when there is difficulty breathing. Nebulized inhalation of a 2-4% sodium bicarbonate solution is administered. Seek medical attention. Ingestion: The patient should rinse their mouth immediately while awake, and be given milk or egg white to drink. Seek medical attention immediately. Extinguishing method: dry powder, sand. Water use is prohibited.