Sodium hydroxide (caustic soda) – Drain cleaner granules (500 g)

Buy sodium hydroxide 99% (NaOH / caustic soda / lye)

Looking to buy sodium hydroxide for professional use? Sodium hydroxide, also known as lye or caustic soda, is a white, odourless solid with strongly alkaline properties. It is hygroscopic (absorbs moisture from the air) and releases a great deal of heat when dissolved in water. Because it is highly corrosive, careful handling and suitable personal protective equipment are essential.

Sodium hydroxide is widely used in industrial processes, including the chemical industry, metalworking and textile processing. It is supplied as a solid (granules) and is suitable for controlled professional applications.

Product specifications

• Product name: Sodium hydroxide 99% pure
• Also known as: NaOH, caustic soda, lye
• CAS number: 1310-73-2
• Chemical formula: NaOH
• Purity / quality: ≥ 99%, technical grade
• Form: Granules
• Delivery: Directly from stock, fast shipping
• Application: unblocking PVC drain pipes, kitchen sinks, washbasins, shower drains and various industrial and laboratory applications

What is sodium hydroxide used for?

Sodium hydroxide is used in a variety of industrial and technical sectors, including chemical synthesis and pH adjustment, the paper and pulp industry, textile processing, and cleaning and degreasing in metalworking.

Solid sodium hydroxide (granules) is also used for technical cleaning, including unblocking drain pipes, provided they are plastic (PVC). Use in metal pipes is discouraged because sodium hydroxide can attack them and cause leaks.

Use depends on the application and is the responsibility of the professional user.

Chemical properties

Sodium hydroxide is a strongly alkaline solid that is readily soluble in water. Dissolving it releases a great deal of heat. The substance is hygroscopic and reacts with acids and certain metals. These properties determine how it should be stored, handled and used.

Storage and use

Store the product in a dry, well-ventilated place in suitable airtight plastic packaging. Keep it away from acids, moisture and incompatible materials. Use only with appropriate personal protective equipment and in accordance with applicable safety procedures.

Health and Safety

Danger

Hazard statements (H-statements)

• H290: May be corrosive to metals.
  
• H314: Causes severe skin burns and eye damage.

Precautionary statements (P-statements)

• P260: Do not breathe mist, vapours or spray.
• P280: Wear protective gloves / protective clothing / eye protection / face protection.
• P303+P361+P353 – IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
• P305+P351+P338 – IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P310: Immediately call a POISON CENTER or doctor.

FREQUENTLY ASKED QUESTIONS – FAQ

Is sodium hydroxide dangerous?
Yes. It is highly corrosive and can cause serious injury. Always use suitable protective equipment.

Can I use sodium hydroxide drain-cleaner granules to unblock a drain?
Yes, provided the pipes are plastic (PVC) and the safety instructions are followed strictly. Not suitable for metal pipes.

How should I store sodium hydroxide?
Store in a dry, well-ventilated place in airtight plastic containers and keep out of reach of children.

May I mix NaOH with other cleaning products?
Do not mix with acids or chlorine-containing products. This can cause violent, dangerous reactions.

Where can I buy sodium hydroxide?

DutchChems supplies sodium hydroxide (caustic soda) in 500-gram bottles. We choose bottles rather than buckets for safety reasons: a bottle makes accurate dosing much easier and reduces the risk of the substance coming into contact with the skin. Discounts are available when multiple bottles are ordered.

We also supply this substance in bulk packaging such as bags and big bags. Request a quotation using our contact form.