{"product_id":"bilt-hamber-deox-c-crystalline-rust-remover-concentrate","title":"Bilt Hamber Deox-C | Crystalline Rust Remover Concentrate","description":"\u003ch2\u003eA rust remover that leaves the steel alone\u003c\/h2\u003e\u003cp\u003eDeox-C is supplied as a \u003cstrong\u003ecrystalline, 100% active\u003c\/strong\u003e powder that you dissolve in water to make a rust-removing bath. The headline claim is the one that matters: it removes corrosion products from steel \u003cstrong\u003ewithout aggression to the underlying sound material\u003c\/strong\u003e. Bilt Hamber state it will not remove sound steel surrounding a corroded area, which is why it can be used on genuinely delicate items — thin sheet, fine threads, fragile castings — that an aggressive acid would eat.\u003c\/p\u003e\u003ch2\u003eThe numbers\u003c\/h2\u003e\u003cp\u003eBilt Hamber's SDS puts the working solution at \u003cstrong\u003epH 3.5–4.0\u003c\/strong\u003e. It is mildly acidic. It carries \u003cstrong\u003eno CLP hazard classification at all\u003c\/strong\u003e — Section 3 of the SDS lists no hazardous ingredients, and Section 12 records it as biodegradable, with no bioaccumulation potential and negligible ecotoxicity. That is an unusual thing to be able to say about a rust remover.\u003c\/p\u003e\u003cp\u003eWe'll be straight about what we \u003cem\u003ecan't\u003c\/em\u003e tell you: Bilt Hamber do not publish the active ingredient, and their SDS names none. You'll find plenty of forum confidence about what's in it. We're not going to repeat guesses as fact.\u003c\/p\u003e\u003ch2\u003eDilution\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e5% is the recommended strength\u003c\/strong\u003e — 1 part Deox-C to 19 parts water. That means \u003cstrong\u003e1kg makes a 20 litre bath\u003c\/strong\u003e, which is Bilt Hamber's own figure, not ours. Step up to 20% (1:4) for very heavy corrosion or a longer-lived bath.\u003c\/p\u003e\u003cp\u003eDissolve in \u003cstrong\u003ehot water\u003c\/strong\u003e and stir until the solution runs water-clear. Heat is the accelerator: at around 70°C the process is dramatically faster; at 10°C it crawls. Use plastic or stainless vessels only — \u003cstrong\u003enever steel or galvanised\u003c\/strong\u003e. Lift the item and brush it periodically. Heavy corrosion can take 72 hours or more. When the bath turns dark yellow to black, it's spent.\u003c\/p\u003e\u003ch2\u003eWhere not to use it\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDo not immerse zinc, lead or tin, or alloys containing them.\u003c\/strong\u003e Prolonged immersion will also dull polished surfaces. And while it carries no hazard classification, it will sting cuts and abrasions, and Bilt Hamber's SDS warns that eye contact can cause lasting damage — so wear eye protection and gloves regardless of what the label doesn't say.\u003c\/p\u003e\u003ch2\u003eFinish the job\u003c\/h2\u003e\u003cp\u003eBare, de-rusted steel flash-rusts fast. Add \u003cstrong\u003eAtom-Mac at 2%\u003c\/strong\u003e to your rinse water to stop it, then get a coating on.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSafety Data Sheet (Australia)\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0669\/0707\/8878\/files\/Deox-C_SDS_au.pdf?v=1784379282\" target=\"_blank\" rel=\"noopener\"\u003eDownload the Bilt Hamber Deox-C SDS (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Bilt Hamber","offers":[{"title":"1kg","offer_id":48433202495710,"sku":"BH-Deox-C-1kg","price":53.5,"currency_code":"AUD","in_stock":true},{"title":"5kg","offer_id":48433202528478,"sku":"BH-Deox-C-5kg","price":188.5,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/0707\/8878\/files\/deox-C_1kg-scaled-e1589280667504.jpg?v=1784179132","url":"https:\/\/www.alphadetails.com.au\/products\/bilt-hamber-deox-c-crystalline-rust-remover-concentrate","provider":"Alpha Details","version":"1.0","type":"link"}