DARACLEAN 257
Heavy-Duty Aqueous Alkaline Cleaner
DARACLEAN 257 is a heavy duty aqueous alkaline cleaner containing phosphates, silicates, chelators, surfactants, and inhibitors. DARACLEAN 257 Heavy-Duty
Aqueous Alkaline Cleaner is ideal for spray and immersion applications where a broad spectrum of soils and substrates are involved.
- No SARA (Superfund Amendments And Reauthorization) reportables
- Recyclable
- Free rinsing
- No fragrances
- Effective on organic and inorganic soils
- Long bath life
- No glycol ethers
- Very low foaming liquid cleaner
- Aerospace qualified liquid cleaner
- Low VOC’s
- SCAQMD Certified cleaner
As with all highly silicated cleaners, an immediate and thorough rinse is recommended to avoid powdery residues on parts and fixtures. Avoid prolonged
exposure to glass. Thoroughly agitate while concentrate is being added to the bath.
Applications/Starting Dilution:
| Method | Concentration | Temperature | Typical Duration |
| Soak | 5 – 30% | 27 – 93°C (80 – 200°F) | 2 – 30 minutes |
| Agitation | 5 – 30% | 27 – 93°C (80 – 200°F) | 2 – 30 minutes |
| Spray | 3 – 15% | 49 – 93°C (120 – 200°F) | 0.5 – 30 minutes |
| Hand Wipe | 5 – 25% | Ambient to 49°C (120°F) | As required |
| Steam | 1 – 5% | 82 – 93°C (180 – 200°F) | 1 5 minutes |
| Ultrasonic | 5 – 30% | 27 – 93°C (80 – 200°F) | 2 – 30 minutes |
| Inhibitor/Rinse Aid | 1 – 3%, Inhibitor Only | 27 – 93°C (80 – 200°F) | 0.25 – 5 minutes |
Concentration, temperature and duration may be adjusted for optimum performance.
Typical Physical Properties:
| Alkaline Equivalent | 0.44 (MEQ to pH 8.3) |
| 0.84 (MEQ to pH 4.0) | |
| Appearance | Pale straw liquid; slight haze |
| Cloud Point , 10% in DI Water | 38°C (100°F) |
| Conductivity, Concentrate | 43.4 mS |
| Foam | Low |
| Odor | Bland |
| pH, 10% Diluted in DI Water, 25°C (77°F) | 11.5 |
| pH, Concentrate, 25°C (77°F) | 11.8 |
| Refractive Index, Concentrate | 22.0 – 26.0°Brix @ 20°C (68°F) |
| Specific Gravity | 1.12 |
| Surface Tension, 10% | 30 dynes/cm |
| Vapor Pressure | 17 mmHG @ 20°C (68°F) |
| VOC, 10% (EPA Method 24) | 0.5 gm/l (<0.1 lbs/U.S. gallon) |
| VOC, Concentrate (EPA Method 24) | 4.8 gm/l (0.04 lbs/U.S. gallon) |
| Weight/U.S. Gallon | 1.12 kg/l (9.3 lbs/U.S. gallon) |
Performance Properties:
DARACLEAN 257 is non-corrosive and non-staining to a wide variety of alloys including 2000 and 7000 series bare and alclad aluminum, copper, mild steel, gray cast iron and steel wool. DARACLEAN 257 has been found to successfully remove a wide range of organic and inorganic soils including:
| Axel GreaseVegetable OilRosin FluxMineral Oil | EDM OilLithium GreaseMeropa 450SAE Motor Oil | Cyl-Tal 81Sta-Put 350CosmolineLanolin | Light rustHydraulic GreaseHydraulic Oil |
Disposal:
DARACLEAN 257 Heavy-Duty Aqueous Alkaline Cleaner can be treated via skimming and/or filtering. Final sewerability is determined by the municipal sewer
district covering the plant location
Availability, Storage, and Handling:
DARACLEAN 257 Heavy-Duty Aqueous Alkaline Cleaner is available in 5 gallon pails, 55 gallon drums, and returnable totes. It is recommended that DARACLEAN 257 be stored in well-ventilated areas at temperatures between 4 and 38°C (40°F and 100°F). The recommended shelf life of this product is one year.
Samples should not be stored for long periods of time in glass containers; plastic is preferred.