Sodium Hydroxide 50% Solution (Caustic Soda 50%)


SKU: GPC2003 Category:

Caustic Soda 50% Solution is an odourless, clear and colourless liquid. It is a slightly viscous liquid and is miscible with water at any ratio. Caustic Soda 50% Solution reacts strongly with alkaline and is highly corrosive to various materials.

The following pack sizes are available for purchase but exceed LQ ADR shipping restrictions, prices are available upon request



Appearance: Clear to slightly turbid liquid
pH, neat: 14
Sodium Chloride (as NaCl): 100mg/kg max.
Sodium Carbonate (as Na2CO3): 0.2% max.
Sodium Chlorate (as NaC1O3): 65mg/kg max.
Sodium Sulphate (Na2SO4): 100mg/kg max.
Arsenic (As): 1mg/kg max.
Cadmium (Cd): 0.5mg/kg max.
Chromium (Cr): 0.5mg/kg max.
Iron (Fe): 10mg/kg max.
Mercury (Hg): 0.05mg/kg max.
Nickel (Ni): 1mg/kg max.
Lead (Pb): 0.25mg/kg max.
Antimony (Sb): 2.5mg/kg max.
Selenium (Se): 2.5mg/kg max.

Hazard Class: 8

Packing Group: 2

Hazard Phrases: May be corrosive to metals. Causes severe skin burns and eye damage.

Prec Phrases: Keep out of reach of children. Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.


Cas No: 1310-73-2
Einecs No: 215-185-5

HS CODE: 2815120000


Following the UK’s departure from the EU on 1 January 2021, all European shipments are sent on a DAP Basis (Delivered at Place).

This means that the buyer will be liable for import VAT at their prevailing national rate and for orders over 150€ (including carriage) import duties will become chargeable at your prevailing national rate.

The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.


Additional information

Weight N/A
Pack Size

1L, 2.5L, 5L