To the average shopper, a bottle of Tesco Thick Bleach Lemon is a tool of mundane utility. It sits under the sink, a plastic sentinel promising to obliterate germs and leave the toilet bowl smelling of artificial citrus. It is a domestic commodity, often bought in bulk and used without ceremony. However, there exists a document that strips away this veneer of domestic normality and reveals the chemical reality lurking within the yellow plastic: the Safety Data Sheet (SDS).