It contains Sodium Hydroxide (caustic soda) to maintain alkalinity and Anionic Surfactants for cleaning performance.

W5 Thick Bleach is classified as a hazardous chemical mixture. Its high viscosity is designed to "cling" to surfaces, such as toilet bowls, for longer contact times and better disinfection.

The Safety Data Sheet (SDS) is a critical document for understanding the chemical risks, handling requirements, and emergency procedures associated with this powerful cleaning agent. Primarily sold through retailers like Lidl, W5 Thick Bleach is a sodium hypochlorite-based disinfectant designed for heavy-duty household and commercial cleaning. Product Overview and Composition

According to standardized SDS classifications (such as CLP/REACH ), W5 Thick Bleach presents the following risks: Causes severe skin burns and eye damage. H290: May be corrosive to metals.

The primary active substance is Sodium Hypochlorite (usually <5% chlorine-based bleaching agents).

Very toxic to aquatic life with long-lasting effects. EUH031: Contact with acids liberates toxic gas (chlorine). Safe Handling and PPE