Registration Dossier
Registration Dossier
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EC number: 237-430-5 | CAS number: 13780-39-7
Endpoint summary
Administrative data
Description of key information
Additional information
Titanium oxychloride is an unstable chemical compound which results from the hydrolysis of titanium tetrachloride.
1. step: TiCl4 + H2O↔TiOCl2 + 2 HCl
2. step: TiOCl2 + H2O↔TiO2 + 2 HCl
Summary reaction: TiCl4 + 2 H2O↔TiO2 + 4 HCl
In water the complete hydrolysis reaction takes place immediately. For this reason the target substance cannot get isolated and studies on physico-chemical properties on the substance itself generally are technically not feasible. Target compound titanium oxychloride only can get stabilised in aqueous solution by shifting the chemical equilibrium shown above toward the side of titanium oxychloride via addition of hydrochloric acid. Only on a few endpoints some data are available, usually from company MSDS. The data always reflect to the properties of a mixture of an aqueous solution of titanium oxychloride in coexistence with hydrochloric acid.
| Property | Data reported | Comments | |
| Appearance | colourless to yellow liquid with biting odour |
Biting odour due to evaporation of hydrochloric acid. | |
| Melting point | -60 to +10 °C | Data from different company MSDS. Exact determination of MP not possible. Data also varying due to different percentages of titanium oxychloride and hydrochloric acid. | |
| Boiling point | decomposition in the range 35 to 50 °C | Data from different company MSDS. Exact determination of BP/decomposition not possible. Data also varying due to different percentages of titanium oxychloride and hydrochloric acid. | |
| Rel. density | 1.4 to 1.6 | The relative densitiy of the solution containing target compound titanium oxychloride of ca. 1.5 is higher than the density of the pure medium hydrochloric acid of ca. 1.1. |
|
| Vapour pressure | 150 hPa (30 °C) to 196 hPa (25 °C) |
Data from different company MSDS. Data varying due to different percentages of titanium oxychloride and hydrochloric acid. | |
| Water solubility | hydrolysis | Hydrolyses immediately and completely in the environmentally and physiologically relevant pH range | |
| Explosiveness | no indicator groups | ||
| Oxidising properties | no indicator groups | ||
| Viscosity | 73 mPa . s (20 °C) | ||
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