Manufacturing Chemists
719 Bush Street; Toledo, OH 43604
1-800-876-SOAP(7627) ; cardinal@glasscity.net
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CARDITE #4PR
Rinse Additive for Pickled Steel
Promotes free rinsing and rapid drying. Prevents spots, stains and discoloration.
Inject into rinse water used after acid pickling. If multi-stage cascade rinsing is used, inject into next-to-last rinse stage. Since Cardite #4PR is a low-viscosity liquid, the feed rate can be accurately controlled by feeding into the rinse water through a metering pump or a venture injector. At usage levels, foam is not problem.
Recommended Use Dilution
0.5% solution
Equivalent to 0.64 oz/gal water = 1:199 water
Example: If rinse water inflow is 10 gallons per minute = 600 gallons per hour, inject Cardite #4PR at any of the following equivalent rates:
| at… | 3 gallons per hour, |
| or… | 384 fluid ounces per hour, |
| or… | 6.4 fluid ounces per minute, |
| or… | 189 milliliters per minute. |
| Properties – Hazard Classes – Precautions | |
|---|---|
| Physical form | liquid |
| Appearance | clear, pale amber |
| Odor | none |
| Specific Gravity | 1.095 |
| pH undiluted | 4 |
| Foam, 0.5% solution, agitated | 15 mm maximum |
| Flash Point | none |
| Freeze Point | 28F |
| Viscosity @ 65°F | low, 2 cp |
| Evaporation Rate (water = 1) | 0.96 |
| Solubility in water | infinite |
| Solubility in common petroleum distillates | zero |
| Manufacturing Chemists Association class | nonflammable |
| DOT hazard label required | none |
Avoid contact with skin and eyes. Do not take internally. Keep out of reach of children. No unusual hazard is known. Mildly acidic as shipped.