Commercial Sodium Hydroxide Solution Freezing Point
2004年4月7日 · RE: Commercial Sodium Hydroxide Solution Freezing Point TD2K (Chemical) 7 Apr 04 11:41 Do a search for "Dow Caustic soda solution handbook" (there's a wealth of physical property data for caustic soda on the web), it has all sorts of information such as density, viscosity and freezing points for various caustic soda solutions
NaOH and carbon steel - Corrosion engineering - Eng-Tips
2008年4月18日 · 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. It becomes increasingly more corrosive with increasing temperature and concentration.
SS316 Compatibility on 10% NaOH Solution. - Eng-Tips
2020年10月23日 · 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 Hydroxide hence made the selection. We will be purchasing the pump, piping and valves in a day or two. Please let me know if you have comments and suggestions. Thanks and Regards,
Sodium Hydroxide Agitation - Chemical process development
2008年8月18日 · I need to come up with a way to agitate 3lbs of NaOH/1 gallon of water solution. We are working with a 200 gallon tank. Our first reaction was to air agitate but the solution must stay at about 150-180F, I think. So really air agitation sounds like it is going to cool the solution off rather than help move the solution around.
viscosity of caustic soda solution at lower temperatures
2011年10月25日 · RE: viscosity of caustic soda solution at lower temperatures jmw (Industrial) 28 Oct 11 06:43 According to the chart of the solidfying curve for caustic, between 16% and 24% the solidifying temperature is less than or equal to -20ºC; lowest is approx -28ºC for 19.5% solution.
Suitable Material for 50% Sodium Hydroxide - Eng-Tips
2003年1月7日 · RE: Suitable Material for 50% Sodium Hydroxide bewdley (Chemical) 29 Mar 05 04:06 Materials : As an evaporator designer, I have always used Nickel 200 over (simplifying) 40 % NaOH and 80 °C; Nickel 201 (low carbon) for the typical first effect, 50 % and 120 - 140 °C. 316 L for vapour pipes.
Caustic Soda Recovery - Waste disposal & treatment - Eng-Tips
2002年3月25日 · 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 one 900l rinse tank. When the aluminium concentration reaches about 20-30g/L, the spent solution is dumped (handled by independent disposal company).
Sodium Bisulfite production - Chemical plant design & operations
2010年3月3日 · The pH of a sodium bisulfite solution obtained by dissolving 10 wt % sodium metabisulfite in water at 20°C is 4.9; at 30 wt %, the pH is 4.4. Manufacture. Aqueous sodium hydroxide, sodium bicarbonate, sodium carbonate, or sodium sulfite solution are treated with sulfur dioxide to produce sodium metabisulfite solution.
Thermal Conductivity of caustic Solution - Eng-Tips
2006年11月1日 · See section 3 of "The Equations for Thermophysical Properties of Aqueous Solutions of Sodium Hydroxide" by Alexey A. Alexandrov: h ttp://www. iapws.jp/P roceedings /Symposium 02/086Alex androv.pdf The thermal conductivity is given in equation form, as a function of concentration & temperature. Note: the molality of a 50 wt% NaOH solution is 12.5.
NaOH Pipe Sizing - Material engineering general discussion - Eng …
2003年12月1日 · What is the minimum velocity in piping used to recirculate 50% caustic soda into a heated storage tank?