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Sodium Hydroxide 20%, 20 l

Please ask for quote via email or by phone (204) 488-1538.

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SKU: NAOH/20%-20L-CAN Categories: , ,


Sodium Hydroxide (also called caustic soda) is very valuable, important and very efficient pH correction agent that increases pH with the most waters. In the interest of operational safety at waterworks, Osorno discourages the often-seen use of 50% sodium hydroxide because of the danger that it poses to operators.

Osorno keeps the concentration of sodium hydroxide at 20% because it is not only user friendly concentration of sodium hydroxide, but also, it allows easy pH adjustments for waters with low buffer capacity (or alkalinity). Osornos' Sodium Hydroxide 20% is ANSI 60 certified.

Please contact Osorno if advise is required for sodium hydroxide application.

Additional information


20 l, 208 l

Dosing Rate

Sodium hydroxide dosing rate depends on the application:
- If pH is increased for iron removal, than target pH range is 7.3-7.6.
- If pH is increased for manganese removal, than target pH range is 7.9-8.3.
- For metal pipes passivation with orto-phosphates, pH needs to be above 8.
- For decrease of corrosion rate in metal pipes, pH needs to be above 7.9.
- For increase of pH after flocculation/coagulation process, dosing rate of sodium hydroxide is based on the target pH.
- If water has very low buffer capacity or is demineralised by RO purification process, addition of sodium hydrogen carbonate (soda ash) will be more suitable option for remineralization.
Please contact Osorno to verify dosing rate and consumption of pH correction agent.


- Sodium hydroxide added to water allows to precipitate various metals (including toxic lead and copper) from solution.
- Sodium hydroxide added to water can be used for precipitation of calcium carbonate.
- Sodium hydroxide added to water and heated is used as an industrial cleaning agent.
- Sodium hydroxide will cause severe damages in contact with skin and eyes, and it can cause lung damage if inhaled.
- Sodium hydroxide must be handled with care. Protective equipment must be used at all times.


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Osorno Enterprises Inc.
976 Elgin Avenue
Winnipeg MB R3E 1B4
+1 204 488-1538 (Phone)
+1 204 488-1566 (Fax)
Regular Hours of Operation
We are closed on December 24 - 28, 2020 and
December 31, 2020 - January 4, 2021
Monday - Friday: 9:00 - 17:00
Saturday - Sunday: Closed

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