---
product_id: 671350933
title: "Sodium Hydroxide, Caustic soda powder, Lye for soap making, Sink unblocker the best drain cleaners and unblockers, Strongest toilet unblocker, kitchen sink unblocker, drain cleaner, sink cleaner, 1KG"
brand: "spartax"
price: "€ 51.20"
currency: EUR
in_stock: true
reviews_count: 8
category: "Spartax"
url: https://www.desertcart.es/products/671350933-sodium-hydroxide-caustic-soda-powder-lye-for-soap-making-sink
store_origin: ES
region: Spain
---

# multi-surface drain unblocker 100% pure sodium hydroxide child-resistant safety cap Sodium Hydroxide, Caustic soda powder, Lye for soap making, Sink unblocker the best drain cleaners and unblockers, Strongest toilet unblocker, kitchen sink unblocker, drain cleaner, sink cleaner, 1KG

**Brand:** spartax
**Price:** € 51.20
**Availability:** ✅ In Stock

## Summary

> ⚡ Unleash the ultimate unblocker & soap-making secret weapon!

## Quick Answers

- **What is this?** Sodium Hydroxide, Caustic soda powder, Lye for soap making, Sink unblocker the best drain cleaners and unblockers, Strongest toilet unblocker, kitchen sink unblocker, drain cleaner, sink cleaner, 1KG by spartax
- **How much does it cost?** € 51.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/671350933-sodium-hydroxide-caustic-soda-powder-lye-for-soap-making-sink)

## Best For

- spartax enthusiasts

## Why This Product

- Trusted spartax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Effect:** Keeps pipes clog-free longer than typical store-bought cleaners
- • **Craft & Clean Duality:** Ideal for professional soap makers and heavy-duty drain cleaning alike
- • **Pure Power, No Fillers:** 100% sodium hydroxide for unmatched cleaning and soap making precision
- • **Safety First Packaging:** Sturdy bottle with child-resistant cap for secure handling
- • **Versatile Drain Master:** Clears kitchen, bathroom, outdoor, and toilet drains with industrial strength

## Overview

Spartax Sodium Hydroxide (Caustic Soda) powder is a premium, 100% pure chemical essential for both expert soap crafting and powerful drain cleaning. Its industrial-grade formula rapidly dissolves tough blockages in sinks, toilets, showers, and outdoor drains, while its child-resistant packaging ensures safe storage. Trusted by professionals and home users alike, this 1KG powerhouse delivers long-lasting, reliable performance where ordinary cleaners fail.

## Description

Caustic Soda - Sodium Hydroxide, essential for craft enthusiasts and commercial cleaners alike. It serves as a crucial component in lye for soap making, commonly included in soap making kit and soap making supplies. As a base in soap base, it catalyses saponification, making it indispensable in crafting high-quality soaps. In cleaning applications, this potent caustic soda crystals acts as a clog cleaner and more specifically, sink and drain cleaner, efficiently clearing severe blockages. It is known for its effectiveness as a sink unblocker, toilet unblocker, shower unblocker, and shower drain unblocker, ensuring free-flowing pipes and drains in both residential and commercial settings.It excels in rigorous environments as a toilet unblocker heavy duty, industrial drain unblocker, and heavy duty drain unblocker, showcasing its versatility across various scenarios. It also addresses kitchen needs as a kitchen sink unblocker and complements this with its role as a kitchen drain unblocker. Outdoor cleaning challenges are no match for its strength as both an outdoor drain unblocker and outside drain unblocker. Its specialized formulations include caustic soda drain unblocker and wild sink and drain cleaner, tailored for diverse cleaning tasks. It’s further used as a bathroom drain unblocker and bathroom sink unblocker, providing comprehensive solutions for bathroom maintenance. This chemical is effective as a bath unblocker, drain unblocker bathroom, bathtub cleaner, sink drain cleaner, and drain hair remover. It rounds out its capabilities as a plughole unblocker, shower drain cleaner, drain cleaners and unblockers, and drainpipe cleaner, ensuring that all plumbing systems remain in optimal condition. It serves as a drain smell eliminator, pipe unblocker, and toilet drain unblocker, actively eliminating odors and maintaining hygiene. Handling this robust solution requires careful attention, ensuring effectiveness while prioritizing safety in its diverse applications.

Review: Soda - I’ve been looking for a really strong and effective drain cleaner for a while, since most store-bought products didn’t work well or only gave temporary results. This product – pure sodium hydroxide (caustic soda) – turned out to be by far the best solution. I used it in the bathtub, where a lot of hair usually builds up, and also in the kitchen sink, where food waste often causes blockages. In both cases, the effect was quick and long-lasting – the pipes are now completely clear and the problem is gone. This is definitely the best caustic soda on the market I’ve tried so far. Another big plus is the packaging – a sturdy plastic bottle with a child-resistant cap, so there’s no risk of accidental opening. Of course, I still recommend keeping it far away from children and pets, as it’s a very powerful product. I also really appreciate the purity and quality – no fillers, just pure sodium hydroxide, which makes it perfect for other uses as well. Personally, I use it mainly for drain cleaning, but I could easily recommend it to a friend who’s looking for pure sodium hydroxide for soap making. To sum up: powerful, strong, long-lasting, and reliable. If you’re searching for something that truly works where others fail – this is the one. Highly recommended!
Review: Great caustic soda - I’ve tried many products for drain cleaning before, but nothing works as well as this one. This Caustic Soda (sodium hydroxide) is exactly what I needed – it’s 100% pure caustic soda, with no additives or fillers. That makes it extremely powerful and effective, much stronger than regular store-bought cleaners. I mainly use it in the bathtub – with a wife and three daughters, the poor drain doesn’t stand a chance against all that hair from everyday showers. Thanks to this caustic soda (sodium hydroxide), the water now disappears faster than my daughters can finish singing their favourite songs in the bathroom. It’s become my secret weapon to keep the bathtub clear and drama-free. Overall, this is by far the best caustic soda I’ve used. Pure, reliable, and extremely effective. If you’re looking for something that truly works, this is it. Highly recommended!

## Features

- Causes severe skin burns and eye damage.
- May be corrosive to metals.
- a. Soap making supplies. Sodium hydroxide powder is crucial in soap and detergent production. Great for soap making kit. Lye for soap making, soap base.
- b. Drain unblocker and sink unblocker combine with toilet unblocker for complete clog resolution. Shower drain unblocker and kitchen sink unblocker ensure smooth water flow.
- c. Use caustic soda drain unblocker and heavy duty drain unblocker for tough blockages. Outdoor drain unblocker and bathroom sink unblocker target specific areas effectively.
- d. Toilet unblocker heavy duty pairs with sink and drain cleaner for powerful cleaning. Drain hair remover and plughole unblocker offer targeted solutions to keep pipes clear.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DLP6QM9G |
| Best Sellers Rank | 7,536 in Grocery ( See Top 100 in Grocery ) 46 in Drain Openers |
| Brand | Spartax |
| Customer Reviews | 4.6 out of 5 stars 74 Reviews |
| Manufacturer | AB Powder Products Limited |

## Product Details

- **Brand:** Spartax
- **Item weight:** 1 Kilograms
- **Molecular formula:** NaOH
- **Purity percentage:** 99
- **Item volume:** 1 Kilograms

## Images

![Sodium Hydroxide, Caustic soda powder, Lye for soap making, Sink unblocker the best drain cleaners and unblockers, Strongest toilet unblocker, kitchen sink unblocker, drain cleaner, sink cleaner, 1KG - Image 1](https://m.media-amazon.com/images/I/418u3iPZ0kL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Soda
*by B***A on 13 September 2025*

I’ve been looking for a really strong and effective drain cleaner for a while, since most store-bought products didn’t work well or only gave temporary results. This product – pure sodium hydroxide (caustic soda) – turned out to be by far the best solution. I used it in the bathtub, where a lot of hair usually builds up, and also in the kitchen sink, where food waste often causes blockages. In both cases, the effect was quick and long-lasting – the pipes are now completely clear and the problem is gone. This is definitely the best caustic soda on the market I’ve tried so far. Another big plus is the packaging – a sturdy plastic bottle with a child-resistant cap, so there’s no risk of accidental opening. Of course, I still recommend keeping it far away from children and pets, as it’s a very powerful product. I also really appreciate the purity and quality – no fillers, just pure sodium hydroxide, which makes it perfect for other uses as well. Personally, I use it mainly for drain cleaning, but I could easily recommend it to a friend who’s looking for pure sodium hydroxide for soap making. To sum up: powerful, strong, long-lasting, and reliable. If you’re searching for something that truly works where others fail – this is the one. Highly recommended!

### ⭐⭐⭐⭐⭐ Great caustic soda
*by Z***4 on 19 September 2025*

I’ve tried many products for drain cleaning before, but nothing works as well as this one. This Caustic Soda (sodium hydroxide) is exactly what I needed – it’s 100% pure caustic soda, with no additives or fillers. That makes it extremely powerful and effective, much stronger than regular store-bought cleaners. I mainly use it in the bathtub – with a wife and three daughters, the poor drain doesn’t stand a chance against all that hair from everyday showers. Thanks to this caustic soda (sodium hydroxide), the water now disappears faster than my daughters can finish singing their favourite songs in the bathroom. It’s become my secret weapon to keep the bathtub clear and drama-free. Overall, this is by far the best caustic soda I’ve used. Pure, reliable, and extremely effective. If you’re looking for something that truly works, this is it. Highly recommended!

### ⭐⭐⭐⭐⭐ Very happy 🥰🥰🥰🥰🥰
*by M***A on 19 March 2025*

The Best and Strongest Caustic Soda I've Ever Used! 😍🥰🤩 I can't express how happy I am to have finally found pure caustic soda that actually delivers incredible results! This product is extremely powerful, so you need to be careful while using it, but trust me—it’s absolutely worth it. It works like magic in dissolving food residue in the sink, leaving the drain completely clear. I also use it weekly to clean my bathtub, and it effortlessly removes all the hair buildup that used to slow down the water flow. This is, without a doubt, the best and strongest caustic soda I’ve ever used. The results are simply amazing, and I couldn’t be more satisfied! If you’re looking for a high-quality, super-effective solution for drain and pipe cleaning, this is the one. I highly, highly recommend it! 🔥💪 🥰🥰🥰🥰🥰🥰

## Frequently Bought Together

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-28*