Titanium chloride, also known as titanium tetrachloride, is an inorganic compound with the chemical formula of TiClfourIt is mainly used to produce sponge titanium and titanium dioxide, and can also be used as catalyst.
Chinese name
Titanium chloride[3]
Foreign name
Titanium tetrachloride[3]
Alias
Titanium tetrachloride[3]
chemical formula
TiClfour[3]
molecular weight
one hundred and eighty-nine point six seven nine[3]
Titanium tetrachloride is a colorless liquid with high density, and the impure sample is often yellow or reddish brown.Similar to vanadium tetrachloride, it is one of the few transition metal chlorides that are liquid at room temperature, and its low melting boiling point is related to weak intermolecular force.Most metal chlorides are polymers containing metal atoms connected by chlorine bridges, while the intermolecular force of titanium tetrachloride is mainly weak van der Waals force, so the melting and boiling points are not high.
TiClfourThe molecule is tetrahedral structure, and each Ti4+With four ligands Cl−to be connected.Ti has the same electron number as the noble gas argon, which is a closed shell structure.Therefore, titanium tetrachloride molecule is a tetrahedral structure with high symmetry.
TiClfourSoluble in non-polar toluene and chlorinated hydrocarbons.The research shows that the process of dissolution of some aromatic hydrocarbons involves a process similar to [(CsixRsix)TiClthree]+Formation of complexes.Titanium tetrachloride can react exothermically with Lewis base solvent (such as THF) to form a six coordinated adduct.For larger ligands, the product is pentacoordinated TiClfourL。
In addition to releasing corrosive hydrogen chloride, store TiClfourTitanium oxide and chlorine oxide will also be generated to stick used plugs and syringes.[1]
Physical and chemical properties
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Density: 1.726g/cmthree
Melting point: - 25 ℃
Boiling point: 135-136 ℃
Refractive index: 1.61[3]
Critical temperature: 358 ℃[3]
Critical pressure: 4.66MPa[3]
Saturated vapor pressure: 1.33kPa (21.3 ℃)[3]
Appearance: colorless or yellowish liquid
Solubility: soluble in cold water, ethanol, dilute hydrochloric acid[2]
purpose
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It is mainly used to produce sponge titanium and titanium dioxide, and can also be used as catalyst.
Emergency Management
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Leakage emergency treatment
Evacuate the personnel in the leakage contaminated area to the safety area, and prohibit irrelevant personnel from entering the contaminated area. It is recommended that emergency personnel wear positive pressure self-contained breathing apparatus and chemical protective clothing.Do not contact the leakage directly, and stop the leakage under the condition of ensuring safety.Spray water mist to slow the volatilization (or diffusion), but do not spray water directly on the leakage or leakage point.Sprinkle soda ash on the ground, and then flush with a large amount of water. The diluted washing water is put into the waste water system.If there is a large amount of leakage, it is better not to treat it with water and remove it under the guidance of technicians.
Protective measures
Respiratory system protection: When it is possible to contact with its vapor, you should wear a gas mask.Wear gas mask when necessary.
Eye protection: wear chemical safety goggles.
Protective clothing: wear work clothes (made of anti-corrosion materials).
Hand protection: wear rubber gloves.
Others: After work, take a shower and change clothes.Store the clothes contaminated by poisons separately and reuse them after washing.Keep good hygiene habits.
First aid measures
Skin contact: wipe off the poison with soft paper or cotton as soon as possible, and then rinse thoroughly with water.In case of burns, seek medical treatment.
Eye contact: immediately lift the eyelid and wash it with flowing water for 10 minutes or with 2% sodium bicarbonate solution.Get medical attention.
Inhalation: quickly leave the site to a place with fresh air.Keep the respiratory tract unobstructed.Give oxygen when breathing is difficult.Give 2-4% sodium bicarbonate solution for atomization inhalation.Get medical attention.
Ingestion: Rinse the mouth immediately when the patient is awake, and drink milk or egg white.Get medical attention immediately.
security information
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Safety terminology
S7/8：Keep container tightly closed and dry.
Store in a tightly closed container and keep dry.
S26：In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
After eye contact, immediately flush with plenty of water and seek medical advice.
S36/37/39：Wear suitable protective clothing, gloves and eye/face protection.
Wear appropriate protective clothing, gloves and eye/face protection.
S45：In case of accident or if you feel unwell, seek medical advice immediately (show the lable where possible).
In case of an accident or feeling unwell, seek medical advice immediately (show the label if possible).
S46：If swallowed, seek medical advice immediately and show this container or label.
If ingested, seek medical advice immediately and show the container/label.
S62：If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label.
Do not induce vomiting after swallowing: seek medical advice immediately and show the container or label.
Risk terminology
R11：Highly flammable.
Highly flammable.
R14：Reacts violently with water.
React violently with water.
R34：Causes burns.
Causes burns.
R48/20：Harmful : danger of serious damage to health by prolonged exposure through inhalation.
Harmful: danger of serious damage to health due to long-term exposure through inhalation.
R63：Possible risk of harm to the unborn child.
There may be a risk of damage to the unborn child.
