NaOH - (Caustic Soda Solution, CSS 50%)

Technical Bulletin

Caustic soda solution (NaOH) is a colourless, viscous, corrosive liquid with a neutral odour. It is completely soluble in water. Contact with most metals results in the formation of flammable hydrogen gas. Qatar Vinyl Company’s (QVC) caustic soda is produced from electrolysis of brine solution at our petrochemical complex located in Mesaieed Industrial City (MIC), Mesaieed, Qatar.

Molecular Weight 40.1 g/mol
Boiling Point 142-144 °C
Freezing Point 12 °C
Vapor Pressure 2 hPa at 20 °C
Liquid Density (Water = 1.0) 1.52 kg/m3 (@ 20 °C)
Vapor Density (Air = 1.0) Data not available


NaOH is used in numerous industries including soap and detergent to paper making and the alumina industry.

Handling and Storage

Caustic soda is corrosive. It should be stored away from oxidizing agents and acidic materials in a cool, dry, ventilated place. Although stable under normal conditions, caustic soda reacts with metals to form explosive and flammable hydrogen gas. Adding water to caustic soda produces a violent, exothermic reaction.

When fighting caustic spills, proper protective clothing and respiratory equipment should be used and unprotected personnel should be moved upwind of the area. Large spills must be reported to the QVC Emergency No. 4476 5800. Disposal of spill material should be in accordance with Qatari regulations.

Kindly refer to the QVC Material Safety Data Sheet (MSDS) for more detailed information regarding the use, storage and safe handling of this product.


Caustic soda is shipped as “Sodium Hydroxide Solution 50%” - a corrosive liquid; Hazard Class 8 (corrosive) and ships under Identification Number UN1824. In case of an emergency, contact QVC Emergency No. 4476 5800 (24hrs).

Point of Contact

Qatar Vinyl Company's Supply Chain Office is available at +974 44765 737/888 or email to assist you for any queries regarding this product or any other QVC product.