High-density polyethylene (HDPE) is one of the most chemically resistant plastics commercially available, which is why it is the standard material for IBC tote bottles. However, HDPE is not universally compatible with all chemicals, and using an HDPE IBC with an incompatible chemical can lead to container failure, leaks, and potentially dangerous situations.
Generally Compatible (Safe for HDPE)
HDPE shows excellent resistance to: most inorganic acids (hydrochloric, sulfuric up to 70% concentration, phosphoric, nitric up to 50%), most alkaline solutions (sodium hydroxide, potassium hydroxide, ammonia), alcohols (methanol, ethanol, isopropanol), salt solutions, detergents and surfactants, most food products, water and glycol solutions.
Limited Compatibility (Use with Caution)
Some chemicals can be stored in HDPE for limited periods or at reduced concentrations but will degrade the plastic over time: concentrated nitric acid (above 50%), glacial acetic acid, hydrogen peroxide above 35%, strong oxidizing agents, some essential oils and fragrances, and certain concentrated pesticide formulations.
Not Compatible (Do Not Use HDPE)
HDPE should NOT be used for: aromatic hydrocarbons (benzene, toluene, xylene), chlorinated solvents (methylene chloride, carbon tetrachloride, trichloroethylene), concentrated oxidizing acids (especially fuming nitric acid), ketones (acetone, MEK) in concentrated form, and some esters and ethers.
These chemicals can cause swelling, softening, stress cracking, or complete dissolution of the HDPE bottle. In some cases, the degradation is gradual and may not be immediately apparent — the container appears fine until it suddenly fails under stress.
When in Doubt
Always verify chemical compatibility before filling an IBC tote. Check the chemical manufacturer's SDS (Safety Data Sheet) for recommended container materials. If HDPE is not listed as compatible, consult with the IBC supplier or consider stainless steel alternatives.