Registration Dossier
Registration Dossier
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EC number: 233-060-3 | CAS number: 10026-13-8
Endpoint summary
Administrative data
Description of key information
Additional information
Phosphorus pentachloride is a white to pale yellow crystalline solid which reacts readily with water or atmospheric moisture. The substance decomposes on contact with water/moisture to form phosphorus oxychloride, and subsequently phosphoric acid and hydrochloric acid.
At atmospheric pressure the product sublimates (T=160°C see Cotton, Wilkinson, Inorganic chemistry, 3rd italian edition, p.460) but it is possible to define a melting point T=148°C-167°C at pressure of 122 kPa and a boiling point T=162 -167°C (temperature of sublimation).
The density of the product at T=25°C is 2.114 g/cm3.
The substance shows fuming and deliquescent properties due to its degradation in presence of water or humidity and so it is technically impossible to determinate the particle size distribution.
The vapour pressure at T=20°C is 1.6 Pa at pressure of 0.012 mmHg and this value is due to phosphorus pentachloride sublimates.
The data related to partition coefficient is not required because as reported in column 2 REACH Annex VII the study does not need to be conducted if the substance is inorganic.
The data about the solubility in water are not reported because the phosphorus pentachloride is instable in water (the substance reacts with water, decomposing to form phosphoric acid and hydrochloric acid).
As reported in column 2 of REACH Annex VII the study about surface tension doesn't need to be conducted because surfactant activity is not a desired property of the substance.
The flash point of the substance is not investigated because it is inorganic (see column 2 of REACH Annex VII).
As reported in the study of National Fire Protection Association phosphorus pentachloride is classified as not-flammable and so the study about auto inflammability doesn't need to be conducted.
The substance is considered to be non-explosive because there are no chemical groups associated with explosive properties present in the molecule.
Finally PCl5 is not considered to be an oxidising agent based on a theoretical consideration of its structure.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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