Label
SDS
Solvents
Potassium Hydroxide (KOH) Flake
Potassium hydroxide flake (caustic potash) for liquid soap making, biodiesel and as a strong alkaline cleaner.
$14.00
or 4 interest-free payments from $3.50 with Afterpay
Same-day dispatch before 11am
Pick up in Penrith
SDS available
Bulk & trade pricing
Corrosive
Potassium Hydroxide (KOH) Flake
Potassium hydroxide flake (caustic potash) for liquid soap making, biodiesel and as a strong alkaline cleaner.
Common uses
- Liquid and soft soap making
- Biodiesel catalyst
- Strong alkaline cleaning
- pH adjustment
Need a hand? Every application is different. If you're unsure whether Potassium Hydroxide suits your job, call our team on 1800 60 50 40 — we're happy to advise.
All information provided is a recommendation only. As each application differs, we cannot guarantee suitability — please test for your own use.
Product specifications
| Product | Potassium Hydroxide (KOH) Flake |
|---|---|
| Purity / Composition | 90% KOH flake |
| CAS Number | 1310-58-3 |
| Grade | Commercial grade |
| Origin | Australian made & packed |
| Available sizes | 1 Kg, 5 Kg |
| Classification | Dangerous Goods — GHS compliant |
Safety
- Highly corrosive — wear gloves and goggles.
- Add to water slowly; mixture heats rapidly.
- Keep away from acids and aluminium.
- Keep out of reach of children.
First Aid
- If swallowed, contact a doctor or Poisons Information Centre (13 11 26) immediately and show the container or label.
- In case of eye contact, rinse immediately with plenty of water and seek medical advice.
- In case of skin contact, wash the affected area with soap and water.
- If inhaled, remove the person to fresh air and keep at rest.
In an emergency: Poisons Information Centre 13 11 26 · CHEMCALL 1800 127 406 · Life-threatening 000. Always refer to the product SDS for full information.
Delivery
After payment, orders are processed by the next business day (cut-off for same-day dispatch is approximately 11am). All consignments are tracked.
| NSW, ACT | 1–3 business days |
|---|---|
| QLD | 2–5 business days |
| VIC | 2–5 business days |
| SA, WA, TAS | 6–15 business days |
We can't ship Dangerous Goods to PO Boxes or Parcel Lockers — a valid street address and daytime phone number are required.
Pick up
Collect from our Penrith warehouse: Unit 3 / 10 Production Place, Jamisontown NSW 2750. Open Mon–Fri 7:30am – 4:30pm. Pay by cash or card.
Customer reviews
★★★★★ 4.7 out of 5
★★★★★
Exactly as described, great price and quick delivery. Will order again.
Ian H. · 24 May 2025★★★★★
Good customer service and on-time delivery. Excellent technical support too.
Brian F. · 5 Feb 2025