---
product_id: 218960174
title: "1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3"
brand: "trustleaf"
price: "€ 52.28"
currency: EUR
in_stock: true
reviews_count: 8
category: "Trustleaf"
url: https://www.desertcart.sk/products/218960174-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4
store_origin: SK
region: Slovakia
---

# Iron-free for organic & horticulture use Powerful water purification agent 17% pure Aluminium Sulphate concentration 1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3

**Brand:** trustleaf
**Price:** € 52.28
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your craft and garden with the pure power of Aluminium Sulphate!

## Quick Answers

- **What is this?** 1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 by trustleaf
- **How much does it cost?** € 52.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/218960174-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4)

## Best For

- trustleaf enthusiasts

## Why This Product

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

## Key Features

- • **Precision Purity:** 17% Aluminium Sulphate ensures consistent, high-performance results
- • **Eco-Friendly Formula:** Iron-free composition ideal for organic gardening and soil pH adjustment
- • **Versatile Application:** Perfect mordant for vibrant textile dyeing and paper-making
- • **Water Clarity Booster:** Effectively coagulates impurities for crystal-clear water purification
- • **Hydrangea Hue Enhancer:** Adjust soil pH to transform your garden’s floral palette

## Overview

This 1kg bag of 17% Aluminium Sulphate (iron-free) is a multi-functional chemical essential for professionals and hobbyists alike. Trusted for water purification, textile dye mordanting, paper-making, and organic horticulture, it offers precise pH control to enhance hydrangea colors and ensures superior coagulation of impurities. Ideal for those who demand purity, versatility, and eco-conscious performance in one crystalline powder.

## Description

Aluminium sulphate is used in water purification and as a mordant in dyeing and printing textiles. In water purification, it causes impurities to coagulate which are removed as the particulate settles to the bottom of the container or more easily filtered. When dissolved in a large amount of neutral or slightly alkaline water, aluminium sulfate produces a gelatinous precipitate of aluminium hydroxide, Al(OH)3. In dyeing and printing cloth, the gelatinous precipitate helps the dye to adhere to the clothing fibres by rendering the pigment insoluble. Can change the colour of hydrangeas by reducing the PH value of soil..

Review: Useful powder to use - I used this as part of a flower pounding project. It is a white powder that you mix with water and soak material in. Once dried this acts as a mordant on the material for the flower dyes and preserves the colours. Easy to use and I didn’t find it affected my skin at all though I was more careful to keep away from my eyes.
Review: Perfect! - Does what it was intended for, as a mordant. Worked perfectly.

## Features

- Causes serious eye damage.
- Aluminium Sulphate in Crystaline form
- Iron Free - suitable for use as a dye, mordant, water purifier and jar sterilizer and in paper-making
- Can reduce soil PH to change Hydrangea's colour
- Suitable for use in Organic Agriculture / Horticulture
- Sometimes called Alum or Papermakers Alum.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NYGXL9T |
| Best Sellers Rank | 1,557 in Garden ( See Top 100 in Garden ) 4 in Water Garden & Pond Treatment |
| Brand | Trustleaf |
| Customer Reviews | 4.5 4.5 out of 5 stars (353) |
| Date First Available | 15 July 2014 |
| Item Weight | 1.15 kg |
| Material | Aluminium |
| Product Dimensions | 16 x 25 x 4 cm; 1.15 kg |

## Product Details

- **Brand:** Trustleaf
- **Item form:** Powder
- **Item weight:** 1.15 Kilograms
- **Manufacturer:** Trustleaf
- **Package information:** Bag

## Images

![1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 - Image 1](https://m.media-amazon.com/images/I/41-BWSOwYcL.jpg)
![1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 - Image 2](https://m.media-amazon.com/images/I/51HliQaZhZL.jpg)
![1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 - Image 3](https://m.media-amazon.com/images/I/51OBKFgEycL.jpg)
![1kg bag ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 - Image 4](https://m.media-amazon.com/images/I/91hfm+O5SRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Useful powder to use
*by J***N on 14 June 2024*

I used this as part of a flower pounding project. It is a white powder that you mix with water and soak material in. Once dried this acts as a mordant on the material for the flower dyes and preserves the colours. Easy to use and I didn’t find it affected my skin at all though I was more careful to keep away from my eyes.

### ⭐⭐⭐⭐⭐ Perfect!
*by C***S on 3 April 2025*

Does what it was intended for, as a mordant. Worked perfectly.

### ⭐⭐⭐⭐ It works
*by J***S on 7 August 2025*

It works for the purpose I bought it. Hydrangea has beautiful blue flowers

## Frequently Bought Together

- 1kg Bag Aluminium Sulphate 17% Iron Free Alum Al2(SO4)3
- Wild Colour: How to Make and Use Natural Dyes

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**Shop now:** [https://www.desertcart.sk/products/218960174-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4](https://www.desertcart.sk/products/218960174-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-05*