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  1. NaOH and carbon steel | Eng-Tips

    Apr 18, 2008 · Corrosion by caustic (sodium or potassium hydroxide) at all concentrations is easily handled at room temperature with a variety of metals and alloys, including carbon steels.

  2. Commercial Sodium Hydroxide Solution Freezing Point | Eng-Tips

    Feb 25, 2003 · My books indicate that a 25% solution of sodium hydroxide should have a freezing point of around -18 deg C. However a local reputable reagent supplier tells me that their 25% …

  3. Caustic Soda Recovery | Eng-Tips

    Mar 24, 2002 · I am currently researching methods to recover a spent sodium hydroxide solution used to dissolve aluminium from extrusion dies. We have two 900L tanks of 25% NaOH and …

  4. Suitable Material for 50% Sodium Hydroxide | Eng-Tips

    Jan 7, 2003 · I require some assistance in determining a suitable material for hot sodium hydroxide processes. The material we are currently using as the diaphragm wetted parts for …

  5. Sodium Bisulfite production | Eng-Tips

    Mar 3, 2010 · Aqueous sodium hydroxide, sodium bicarbonate, sodium carbonate, or sodium sulfite solution are treated with sulfur dioxide to produce sodium metabisulfite solution.

  6. viscosity of caustic soda solution at lower temperatures

    Oct 25, 2011 · We have to solve a very special pumping problem in an explosive environment. Can anybody help with data about the viscosity of caustic soda (sodium hydroxide) 20% …

  7. SS316 Compatibility on 10% NaOH Solution. | Eng-Tips

    Oct 23, 2020 · I also looked at the iso-corrosion diagram for Sodium Hydroxide for 10% strength. SS316 was found to be good up to 48 Deg C for our acidic service and for 10% Sodium …

  8. Sodium Hydroxide Agitation | Eng-Tips

    Aug 18, 2008 · Sodium hydroxide is base, not acid. We're presuming that an ordinary over-the-side agitator won't work here because the tank doesn't suit its installation- if not, that's …

  9. Caustic treatment of silver plated parts | Eng-Tips

    Dec 9, 2014 · Hello, I need some advise. We have a rust reworking process which uses a caustic solution (20% sodium hydroxide with water) to kill the rust. In our experience this works very …

  10. Neutralization calculators | Eng-Tips

    Jan 23, 2007 · Hi there, I have a 0.145 M solution of sulphuric acid. I would like to adjust the pH of my solution to 3 through the addition of 50% sodium hydroxide (caustic soda) in order to …