Sparex No. 2 is a granular, dry acid compound from Krohn Technical Products for pickling, cleaning, and removing surface oxidation, scale, and incrustation from non-ferrous metals. It is an easy, long-lasting alternative to handling liquid sulfuric acid—producing smooth, clean, bright surfaces without attacking fine detail.
Features
- Designed for non-ferrous metals (e.g., silver, gold, copper alloys)
- Effective removal of oxides and firescale
- Granular dry form for convenient mixing and storage
- Safer replacement for liquid sulfuric acid pickles
- Made in the USA
Specifications
| Product |
Sparex No. 2 |
| Form |
Granular dry acid compound (sodium bisulfate) |
| Package Size |
2.5 lb (1.13 kg) bag |
| Yield |
Makes approximately 1 gallon (3.8 L) of solution |
| Origin |
Made in the USA |
| Shipping |
Ground Only – Hazardous Item |
How to Use
- In a dedicated, non-reactive container, add Sparex granules to warm water (never the reverse) and stir to dissolve.
- Maintain solution temperature per your shop practice; quench and pickle as usual.
- Rinse work thoroughly after pickling; neutralize with a mild baking soda bath if desired.
Safety & Handling
-
Poison – Causes Burns. Contains sodium bisulfate.
- Avoid contact with skin, eyes, or clothing; do not inhale dust; harmful if swallowed.
- Wear appropriate PPE: gloves, eye protection, and ensure adequate ventilation.
Notes
- Store in a cool, dry place; keep bag tightly closed when not in use.
- Due to hazardous classification, this item ships Ground Only and cannot be shipped via air service.
