Registration Dossier

Administrative data

Description of key information

Dichloro(methyl)(phenyl)silane is a chlorosilane, generating 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 Section 8.1.1 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. The limited experimental data available on skin and eye irritation/corrosion ( Dow Corning Corporation, 1969 for both studies) support the above comments on the potentially corrosive nature of this material.

Key value for chemical safety assessment

Skin irritation / corrosion

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (corrosive)

Eye irritation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (irritating)

Respiratory irritation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (irritating)

Additional information

Dichloro(methyl)(phenyl)silane hydrolyses rapidly in contact with water and moist air, releasing two moles of hydrogen chloride (HCl) for each mole of parent material. Although the irritation/corrosion studies available are limited, their findings support the severe skin, eye and respiratory damage that would be expected due to release of HCl.

 




Justification for classification or non-classification

Dichloro(methyl)(phenyl)silane is classified 'Skin Corr. 1A', with hazard statement H314 'Causes severe skin burns and eye damage' according to Regulation (EC) No 1272/2008.

The additional hazard statement 'EUH071 Corrosive to the respiratory tract' (1272/2008/EC) is applied, in accordance with related chlorosilane substances and the findings of a limited acute inhalation study, and based on the expected respiratory tract damage caused by the hydrolysis product HCl.