Some standard plumbing glues contain silica, which caustic soda can actually dissolve, causing the joints to fail and "weep" crystallized white residue. When the "Fix" Becomes a Hazard
Most modern homes rely on PVC (polyvinyl chloride) or ABS pipes. Chemically, these plastics are quite resilient to caustic soda, which is why manufacturers often pack the chemical in plastic containers. However, the real danger isn't the chemical—it’s the .
However, "plastic" is not a single material. The story changes depending on which plastic you choose.
The story of caustic soda pipes is not just about the pipe wall; it is about the connections.
When the caustic soda is hot (near boiling) and highly concentrated (50% solution), standard plastics fail. Enter and PP (Polypropylene) .