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When it comes to powerful, cost-effective household cleaning products, W5 Thick Bleach—a popular line available at Lidl supermarkets—is a go-to choice for many. Its thick, viscous formula clings to toilet bowls, sinks, and tiles, promising a deep clean and disinfection. However, the very properties that make it an effective cleaner (its high alkalinity and oxidizing power) also make it a hazardous chemical.

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

Every SDS for chlorine bleach has a bold warning about mixing. W5 Thick Bleach is no exception. When mixed with: