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EC number: 236-704-1
CAS number: 13465-77-5
There are no data for skin and eye irritation/corrosion. However, based
on the fact that the substance is a chlorosilane, so generates hydrogen
chloride in the presence of moisture, it is expected to be corrosive.
Therefore, in accordance with Column 2 of REACH Annexes VII and VIII,
the in vitro and in vivo skin and eye irritation studies (required in
Sections 8.1, 8.1.1, 8.2 and 8.2.1) do not need to be conducted as the
available information indicates that the substance meets the criteria
for classification as corrosive to skin.
Hexachlorodisilane hydrolyses rapidly (half-life <1 minute at pH 7) in
contact with water and moist air, releasing hydrogen chloride (HCl).
Although no in vitro or in vivo irritation/corrosion
studies are available, severe skin, eye and respiratory damage can be
expected due to release of HCl. This is consistent with reliable
measured data for other chlorosilanes.
Based on available data hexachlorodisilane requires classification as
Skin Corrosion Cat. 1A, H314: causes severe skin burns and eye damage
according to Regulation (EC) 1272/2008. It is assumed that substances
that are corrosive to the skin are also damaging to the eyes, so there
is no separate labelling for the eyes. There are no specific data for
respiratory irritation, however, due to the predicted corrosivity the
hazard statement 'EUH071 Corrosive to the respiratory tract' applies.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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