Registration Dossier

Administrative data

Description of key information

Key value for chemical safety assessment

Additional information

Skin corrosion is defined in the CLP regulation as “the production of irreversible damage to the skin; namely, visible necrosis through the epidermis and into the dermis, following the application of a test substance for up to 4 hours.” Therefore, corrosion is the more severe reaction than irritation to the skin resulting in irreversible skin damage.

Eye corrosion (serious eye damage) is defined in the CLP regulation as “the production of tissue damage in the eye, or serious physical decay of vision, following application of a test substance to the anterior surface of the eye, which is not fully reversible within 21 days of application”. In other words it is more severe than eye irritation reaction of chemical resulting in irreversible damage of eye tissue.

In general, when classified as corrosive, a substance will have specific physico-chemical properties (e.g. extreme pH: like ≤ 2 and ≥ 11,5) or specific structure defining its corrosive properties.

Calcium hypochlorite has harmonised at the EU level classification and it is classified as C (corrosive); R34 (Causes burns) (in accordance with Directive 67/548/EEC) and as Skin Corrosive Category 1B substance (in accordance with the GHS criteria of Regulation (EC) No 1272/2008).


Justification for classification or non-classification