---
product_id: 473736375
title: "1kg Bag Aluminium Sulphate 17% Iron Free Alum Al2(SO4)3"
brand: "trustleaf"
price: "VT22651"
currency: VUV
in_stock: true
reviews_count: 5
category: "Trustleaf"
url: https://www.desertcart.vu/products/473736375-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4
store_origin: VU
region: Vanuatu
---

# Iron-free, ideal for organic use Powerful water purifier & mordant 17% pure aluminium sulphate crystals 1kg Bag Aluminium Sulphate 17% Iron Free Alum Al2(SO4)3

**Brand:** trustleaf
**Price:** VT22651
**Availability:** ✅ In Stock

## Summary

> 🌈 Unlock vibrant colors & pure water with every crystal!

## Quick Answers

- **What is this?** 1kg Bag Aluminium Sulphate 17% Iron Free Alum Al2(SO4)3 by trustleaf
- **How much does it cost?** VT22651 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/473736375-1kg-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

- • **Crystal Clear Purity:** 17% aluminium sulphate in premium crystalline form ensures consistent performance every time.
- • **Eco-Conscious & Iron-Free:** Perfect for organic agriculture and horticulture, with zero iron contamination for pure results.
- • **Resealable & Ready-to-Use:** Convenient 1kg bag with easy reseal keeps your supply fresh and mess-free.
- • **Soil PH Magic for Hydrangeas:** Transform your garden with soil pH adjustment that unlocks stunning hydrangea color changes.
- • **Versatile Water & Textile Treatment:** Effortlessly purifies water and enhances dye adhesion for vibrant, lasting colors.

## Overview

Trustleaf’s 1kg Aluminium Sulphate (17% pure, iron-free) is a multi-use powerhouse for water purification, textile dyeing, and horticulture. Its crystalline form guarantees high efficacy, while its iron-free formula makes it ideal for organic applications. Perfect for gardeners aiming to alter hydrangea colors by adjusting soil pH, and for professionals seeking reliable coagulation in water treatment or enhanced mordant action in fabric printing.

## 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: Perfect! Nice re-sealable tub and now I have beautiful blue hydrangeas!
Review: Bought this as my Great Dane split a nail and I couldn't stop it bleeeding, and every time it healed he knocked it and started over again..... I put half a teaspoon on some cotton wool and bandaged his nail and toe and when I checked 24 hours later it had completely dried and was able to seal the broken nail wil super glue

## Features

- 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 | #91,257 in Office Products ( See Top 100 in Office Products ) #247 in Fabric Dyes |
| Brand Name | Trustleaf |
| Container Type | Bag |
| Customer Reviews | 4.5 4.5 out of 5 stars (562) |
| Item Form | Powder |
| Manufacturer | Trustleaf |

## Product Details

- **Brand:** Trustleaf
- **Item form:** Powder
- **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/51HliQaZhZL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***E on 30 December 2025*

Perfect! Nice re-sealable tub and now I have beautiful blue hydrangeas!

### ⭐⭐⭐⭐⭐ Review
*by A***A on 25 January 2026*

Bought this as my Great Dane split a nail and I couldn't stop it bleeeding, and every time it healed he knocked it and started over again..... I put half a teaspoon on some cotton wool and bandaged his nail and toe and when I checked 24 hours later it had completely dried and was able to seal the broken nail wil super glue

### ⭐⭐⭐⭐⭐ Review
*by A***R on 24 October 2025*

My son asked to order for their art biology project. In terms of chemistry effect it worked. My son asked me to order more.

## 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.vu/products/473736375-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4](https://www.desertcart.vu/products/473736375-1kg-bag-aluminium-sulphate-17-iron-free-alum-al2-so4)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-07*