Technical Bulletin
Description :
In Many processes used for pickling stainless steel lead to the development of hazardous nitric fumes. To improve safety when pickling, RX MARINE INTERNATIONAL has developed a unique low-fuming pickling spray which reduces the toxic nitric fumes by 50 % and increase the properties of product for optimium result.
Application :
Pickling Spray is universal and suitable for spray pickling larger surfaces of all stainless steel grades. High alloyed steels and duplex steels may need more than one treatment.
Dosgae and Using Procedure :
1. Clean and remove oil and grease using RXSOL DEGREASER, and then rinse off with water. Apply the Cleaner with an acid-resistant pump.
2. Stir the solution before use. Apply the Pickling Spray with an acid-resistant pump, and spray evenly over the whole surface.
3. Typical pickling time for steel grade 304/316 is 180 min at 10 °C, 90 min at 20 °C and 45 min at 30 °C. The pickling time may vary for the same steel grade, depending on the surface finish and the welding method.
4. Remove pickling residues using a highpressure water jet and then rinse with water. The waste water should be treated
before discharge.
Physical Properties :
|
Appearance |
: |
Red |
|
Freezing point |
: |
< 0°C |
|
Boiling point |
: |
100°C, fluid – gas vapour release for nitric acid 50 – 60 °C |
|
Relative density |
: |
1.2 – 1.3 kg/l |
|
Water solubility |
: |
Miscible in water |
|
pH |
: |
0 |
|
Flash point |
: |
> 100°C |
|
Vapour pressure |
: |
Acid fumes may be released, especially at elevated temperatures |
Future & Benefit :
- Restores stainless steel surfaces that have been damaged during fabrication operations such as welding, forming, cutting and blasting. It removes weld oxides, the underlying chromium-depleted layer and other defects that may cause local corrosion.
- Improved pickling result, offers a brighter surface with less discolouration than classical products.
- Higher yield, decreased consumption, thanks to the visible red colour and its free-flowing consistency which facilitates application.
Storage & Handling
Pickling Spray should be stored indoors at room temperature. Containers must be kept properly closed, in an upright position and inaccessible to unauthorised persons. The product is perishable and should not be kept in storage longer than necessary. The spray may decompose during storage and hence need to be stirred before usage. It has a maximum shelf life of two years when stored at room temperature. Exposure to higher temperatures (> 35 °C) may damage the product and reduce the shelf life.
Pickling spray container and the content has been optimised to decontaminate small acid splashes of pickling spray. Protective clothing. In general users should wear acid-resistant overalls, gloves and rubber boots. Face visor should be used and, if necessary, suitable respiratory protective devices.
Product Label
In Many processes used for pickling stainless steel lead to the development of hazardous nitric fumes. To improve safety when pickling, RX MARINE INTERNATIONAL has developed a unique low-fuming pickling spray which reduces the toxic nitric fumes by 50 % and increase the properties of product for optimium result.
