The recommended operating conditions for using Interlox 5707 include the following parameters:
Temperature:
- Optimum Range: 20 – 30 °C (68 – 86 °F)
- Acceptable Range: 15 – 50 °C (59 – 120 °F)
Treatment Time:
- Spray application: 1 minute (optimum), 30 seconds – 2 minutes (acceptable)
- Immersion application: 2 minutes (optimum), 1 – 3 minutes (acceptable)
pH Levels:
- For steel: Optimum pH: 4.6 – 4.9; Acceptable pH: 4.2 – 5.0
- For aluminum, zinc, magnesium: Optimum pH: 4.0 – 4.9; Acceptable pH: 3.5 – 5.0
Agitation: Mild mechanical or solution agitation is beneficial for achieving a uniform coating appearance, especially in immersion applications.
Filtration: Recommended, particularly for lines processing steel, using 25 micron polypropylene bag filtration to remove small amounts of precipitant that may form .
To prepare a 100-liter solution of Interlox 5707, follow these steps:
- Select a suitable clean tank.
- Fill the tank to 80% of its working volume with water (approximately 80 liters).
- Add the required amount of Interlox 5707 M (which is 2.0 liters or 2.15 kg) and mix well.
- Adjust the solution level to the final working volume of 100 liters with water.
- Adjust the solution temperature within the recommended operating range.
- Verify total acid points and pH, and adjust as needed.
- The Interlox 5707 solution is now ready for operation .
Make sure to check for any specific conditions or additional requirements that may apply depending on your local water quality or previous tank contents.
When handling Interlox 5707, the following safety precautions should be taken:
- Avoid direct contact with the material.
- Do not inhale associated mist or vapors.
- Wash contaminated clothing before reuse.
- Refer to the Safety Data Sheet (SDS) for specific precautions before handling this material and for first aid recommendations.
- Keep exposure below the limits recommended by the appropriate regional regulatory agencies.
For further information on product safety, refer to the corresponding SDS, which is provided with the first delivery of a product or can be requested from the appropriate regional Atotech office
The maintenance requirements for the Interlox 5707 solution include the following:
Monitoring and Control: It is necessary to monitor and control both the pH and the Total Acid Points (TA points) of the working solution. Interlox 5707 R is designed to maintain the pH while replenishing the active components.
Measurement: The pH should be measured using a fluoride-resistant pH probe. The total acidity is verified by titration, and the normal range for a 2% solution is between 4.0 to 5.0 TA points .
Automated Control: For best practice, an automated control system using a pH controller and dosing pump is recommended. This system maintains the pH within its optimum operating range by adding Interlox 5707 R as needed .
Manual Control: If automated control is not available, manual monitoring of the pH should be done 2 to 8 times per shift or per day. Adjustments should be made based on the pH readings .
Contamination Check: Installations processing a high percentage of aluminum may accumulate aluminum in the solution. It is recommended to analyze for aluminum concentration, and if it exceeds 0.5 g/l, the working solution should be disposed of and a new make-up performed .
Chemical Consumption: Typical replenishment rates for Interlox 5707 R should be monitored, and adjustments made based on the specific conditions of the operation .
Regular Adjustments: If the total acidity decreases more than 0.5 TA points from the standard and the pH is within the optimum range, Interlox 5707 M should be added to increase TA points without significantly changing the pH .
In summary, regular monitoring of pH and acidity, proper chemical replenishment, and addressing contamination are key maintenance requirements for the Interlox 5707 solution.
The concentration of Interlox 5707 can be controlled and maintained during operation through several methods as outlined in the document:
Automated Control Using pH Controller and Dosing Pump:
- A pH controller and dosing pump can provide fully automated pH control by adding Interlox 5707 R on demand.
- The pH controller continuously measures the pH value and adjusts it to maintain the optimal range.
- Regular monitoring of the total acidity (TA points) is recommended, and if it decreases more than 0.5 TA points from the standard, Interlox 5707 M should be added to increase the total acidity without significantly changing the pH .
Manual Control:
- The pH should be monitored manually 2 to 8 times per shift or per day.
- If the pH exceeds the optimal range, small amounts of Interlox 5707 R should be added; conversely, if the pH is too low, it can be adjusted using ammonium hydroxide or dilute sodium hydroxide.
- The total acidity should also be verified regularly, and adjustments to Interlox 5707 M should be made if it decreases beyond 0.5 TA points .
Semi-Automatic Control:
- This method involves initially using manual control to record the consumption of Interlox 5707 R and calculating the consumption rate, which can then be used to set up a calibrated dosing pump for continuous addition .
Conductivity Measurement:
- While conductivity is not a primary control method, it can indicate the depletion of the Interlox 5707 solution. A decrease in conductivity suggests that the solution is being depleted, prompting checks and potential adjustments .
Contamination Monitoring:
- For installations processing a high percentage of aluminum, aluminum concentrations should be analyzed. If the concentration exceeds 0.5 g/l, the working solution should be disposed of and re-made .
These methods ensure that the concentration and effectiveness of Interlox 5707 are properly maintained during operation.
8. What analytical methods are provided for measuring the solution's total acidity points and concentration of Interlox 5707?
The document provides two analytical methods for measuring the solution's total acidity points and the concentration of Interlox 5707:
Determination of Total Acidity Point by Titration: This method involves acid-base titration using a 0.1M sodium hydroxide volumetric standard and a phenolphthalein indicator. The procedure requires transferring a sample to a vessel, diluting it with DI water, adding the indicator, and titrating until a faint pink color appears. The volume of sodium hydroxide used indicates the total acidity points .
Determination of Interlox 5707 M by Photometry: This method uses a UV/VIS spectrophotometer to measure the absorbance of the solution at a wavelength of 552 nm, where Interlox 5707 M shows an extinction maximum. Calibration standards are prepared, and the absorbance of the sample is compared against these standards to determine the concentration
These methods ensure accurate monitoring and control of the solution's composition and quality during use.
9. What are the recommendations for wastewater treatment from processes using Interlox 5707?
The recommendations for wastewater treatment from processes using Interlox 5707 include the following:
Compliance with Local Regulations: The treatment of wastewater must be carried out according to local authority regulations, considering stated limit values and treatment methods.
Neutralization Precipitation: Rinse water and concentrates can be treated by neutralization precipitation. Concentrates should be diluted with rinse water in a ratio of 1:5 and then neutralized with calcium hydroxide (Ca-lime) to pH 10, allowing a minimum reaction time of 0.5 hours.
Cooling of Wastewater: The wastewater might heat up during the neutralization reaction; therefore, it should be cooled before any further treatment.
Precipitation of Fluoride: The addition of Ca-lime is necessary to precipitate any included fluoride.
Flocculation Agent: For better flocculation, a flocculation agent (recommended is polyacryl amide/anionic with a molecular weight of 4-6 million) should be added and stirred. Allow the precipitate to settle for better filtration.
Observation of Local Regulations: It is essential to observe all local regulations concerning the limiting values of pollutants, including general regulations on dangerous materials .
These recommendations ensure that wastewater is treated effectively and complies with environmental regulations before discharge.
10. Determination of Total Acidity Point by Titration
The determination of Total Acidity Point by titration involves the following steps as outlined in the document:
Principle
The method is based on acid-base titration.
Reagents Required
- 0.1M Sodium hydroxide volumetric standard
- 0.1% Phenolphthalein indicator in ethanol
- Deionized (DI) water
Equipment Required
- Usual laboratory equipment
Procedure
- Transfer 10.0 mL of the sample into a suitable vessel.
- Add 100 mL of DI water to the sample.
- Add 1 mL of the indicator solution.
- Titrate with 0.1M sodium hydroxide volumetric standard until the color changes from colorless to faint pink.
Evaluation
- The consumption of 0.1M sodium hydroxide in mL gives the Total Acidity Points.
- For example, if the titration of 10.0 mL sample consumed 3.8 mL of 0.1M sodium hydroxide, the Total Acidity Points would be 3.8.
Note
To increase the total acid by 1 point, add 6.2 ml/l (0.62% by volume) of Interlox 5707 M.
Acidity points, often referred to as Total Acid Points (TA points), are a measure of the acidity level in a solution, typically determined through titration. In the context of the Interlox 5707 solution, the acidity points indicate the concentration of acidic components in the solution, which can affect the performance of the pretreatment process.
The document specifies that for a 2% solution of Interlox 5707, the normal range for total acid points is between 4.0 to 5.0 TA points. If the total acidity decreases more than 0.5 TA points from the standard, adjustments are necessary to maintain the desired coating performance .
Quality Assurance
For maintenance, calibration of measuring devices, and the use of standards and reference materials, please refer to the corresponding guidelines .
This information is essential for controlling the concentration of the Interlox 5707 solution effectively.
11. Determination of Interlox 5707 M by Photometry
The determination of Interlox 5707 M by photometry involves measuring the extinction maximum at a wavelength of 552 nm, which is used for quantitative determination. Here are the key steps involved in the procedure:
Reagents Required:
- Interlox Reagent A
- Interlox Reagent B
- Interlox 5707 M (reference material)
- Deionized (DI) water
Equipment Required:
- UV/VIS spectrophotometer (e.g., Agilent Cary 60)
- Usual laboratory equipment
- Disposable cuvettes (10 mm layer thickness)
Procedure:
Blank Solution Preparation:
- Pipette 2.5 mL of Interlox Reagent B into a 50 mL volumetric flask.
- Fill up to the mark with Interlox Reagent A and mix thoroughly.
Calibration Standards:
- Prepare the following standard solutions:
- Std 1: 10 mL/L Interlox 5707 M in DI water
- Std 2: 20 mL/L Interlox 5707 M in DI water
- Std 3: 40 mL/L Interlox 5707 M in DI water
- Prepare the following standard solutions:
Sample Preparation:
- For each standard or sample, pipette 0.1 mL of the sample solution and 2.5 mL of Interlox Reagent B into a 50 mL volumetric flask.
- Fill up to the calibration mark with Interlox Reagent A and mix thoroughly.
Measurement:
- Nullify the instrument with the blank solution.
- Determine the absorption of the calibration and sample solutions at 552 nm against the blank solution.
Evaluation:
- The absorption of the calibration solutions is plotted against the concentration.
- Calculate the concentration using linear regression, and the result will be expressed in mL/L and % (v/v).
Example:
If the absorbance of the sample is 0.4558, it corresponds to a concentration of 21.2 mL/L or 2.1% Interlox 5707 M.
For a detailed procedure and ask for the documents at Atotech distributor Ess Ess Trading Coimbatore Email: info@essesstrading.in Mobile: 9843019701
11. Equipment details required for Interlox 5707 M Process.
The equipment required for the Interlox 5707 process includes:
Tank:
- Materials: Polypropylene, Koroseal, rubber lined steel, or stainless steel.
Heater (Optional):
- Type: Teflon coated heating elements.
Filtration:
- Use a 25 micron rated filter media. This is recommended for most applications and is strongly suggested for high volume steel lines. For best filtration equipment contact Excel Laboratories Coimbatore for all type of filtration equipment, Filter bags and pumps. Excel Laboratories Email: info@excellaboratories.com Mobile: 9843019701
Solution Agitation:
- Agitation is recommended for immersion application.
pH Controller (Recommended):
- For auto dosing Interlox 5707 R. Use a fluoride resistant pH probe .
These items are essential for ensuring proper operation and control of the Interlox 5707 solution.
Atotech distributor
ESS ESS TRADING , 81, Visveswara Nagar, Vilankuruchi, Coimbatore -641035
Email: info@essesstrading.in Mobile: 9843019701
Questions to ask
- What is the primary purpose of Interlox 5707 as described in the document?
- Which metals can be treated with Interlox 5707?
- What are the recommended operating conditions for using Interlox 5707?
- How should the make-up of a 100-liter solution of Interlox 5707 be prepared?
- What safety precautions should be taken when handling Interlox 5707?
- What are the maintenance requirements for the Interlox 5707 solution?
- How can the concentration of Interlox 5707 be controlled and maintained during operation?
- What analytical methods are provided for measuring the solution's total acidity points and concentration of Interlox 5707?
- What are the recommendations for wastewater treatment from processes using Interlox 5707?
- Determination of Total Acidity Point by Titration
- Determination of Interlox 5707 M by Photometry
- Total Acid Points (TA points)
