Home Categories Inorganic chemistry Titanium tetrachloride
A7670112

Titanium tetrachloride , GR,99.5% , 7550-45-0

Synonym(s):
Titanium tetrachloride;Titanium(IV) chloride;TTC

CAS NO.:7550-45-0

Empirical Formula: Cl4Ti

Molecular Weight: 189.68

MDL number: MFCD00011267

EINECS: 231-441-9

Update time: 2022-07-08

PRODUCT Properties

Melting point: −25 °C(lit.)
Boiling point: 135-136 °C(lit.)
Density  1.73 g/mL at 20 °C(lit.)
vapor pressure  50 mm Hg ( 55 °C)
refractive index  1.61
Flash point: 46 °F
storage temp.  Flammables area
solubility  H2O: soluble
form  Solution
color  Light yellow to dark brown
Specific Gravity 1.726
Water Solubility  reacts
Sensitive  Moisture Sensitive
Hydrolytic Sensitivity 8: reacts rapidly with moisture, water, protic solvents
Merck  14,9478
Exposure limits ACGIH: TWA 50 ppm
OSHA: TWA 25 ppm; STEL 125 ppm
NIOSH: IDLH 2300 ppm
Dielectric constant 40.0(Ambient)
Stability: Stable. Reacts with water. Incompatible with moisture, ammonia, amines, alcohols, potassium and other chemically active metals.

Description and Uses

Titanium ore was first discovered in 1791 in Cornish beach sands by an English clergyman, William Gregor. The actual identification of the oxide was made a few years later by a German chemist, M.H. Klaproth, who gave the metal constituent of this oxide the name titanium, after the Titans of Greek mythology. Pure metallic titanium was first produced in the early 1900s in 1910 by M.A. Hunter at Rensselaer Polytechnic Institute in cooperation with General Electric Company.
Titanium tetrachloride is an inorganic compound that is an important intermediate in the production of titanium metal and the pigment titanium dioxide. On contact with humid air, it forms opaque clouds of titanium dioxide (TiO2) and hydrogen chloride (HCl). Early attempts to isolate titanium metal from titanium tetrachloride were unsuccessful. The process was improved and commercialized by William Kroll of Luxembourg in the 1930s which involved the reduction of titanium tetrachloride with magnesium in an inert gas atmosphere. This process remains essentially unchanged today. The primary use of titanium tetrachloride is for titanium dioxide used in paints.
The production of titanium metal accounts for only 5% of annual titanium mineral consumption, with the remainder being used in the titanium pigment industry. Pigments are produced using either a sulfate process or a more environmentally acceptable carbochlorination process that converts TiO2 into TiCl4. The latter process also supplies the TiCl4 necessary for the production of titanium metal.

Titanium (IV) tetrachloride (TiCl4) produces a dense white smoke-like vapor when exposed to moist air. It is used as smoke screens and for skywriting, as well in theatrical productions where fog or smoke is required for the scene.

Safety

Symbol(GHS) 
GHS05,GHS06
Signal word  Danger
Hazard statements  H314-H330-H335
Precautionary statements  P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338+P310
Hazard Codes  C,F,Xi,T
Risk Statements  36/37/38-67-65-63-48/20-34-14-11-23-40-37-48/23-39/23-20/21/22-36/38
Safety Statements  26-7/8-62-46-45-36/37/39-24/25-23-16-60
RIDADR  UN 3289 6.1/PG 2
WGK Germany  2
RTECS  XR1925000
21
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  28273990
Toxicity Not found naturally in the environment. Manufactured from titanium-containing minerals and is used to make metallic titanium, titanium dioxide, and other titanium compounds. An irritant to skin, eyes, mucus membranes, and lungs due to its interaction with water to form hydrochloric acid, excessive exposure can result in chemical bronchitus, pneumonia, and death. Severe burns may result from contact with liquid titanium tetrachloride. Although long term, high dose studies caused lung tumors in rodents, IARC and other agencies have not classified titanium tetrachloride for its potential as a human carcinogen.

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