---
product_id: 225540643
title: "1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3"
brand: "trustleaf"
price: "¥8172"
currency: JPY
in_stock: true
category: "Trustleaf"
url: https://www.desertcart.jp/products/225540643-1kg-tub-aluminium-sulphate-17-iron-free-alum-al2-so4
store_origin: JP
region: Japan
---

# Iron-free, organic-friendly Efficient water purifier agent 17% pure aluminium sulphate 1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3

**Brand:** trustleaf
**Price:** ¥8172
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your craft and garden with science-backed purity!

## Quick Answers

- **What is this?** 1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 by trustleaf
- **How much does it cost?** ¥8172 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/225540643-1kg-tub-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

- • **Multi-Use Powerhouse:** From paper-making to jar sterilizing, one tub does it all.
- • **Trusted Quality from the UK:** Top-rated with 4.5 stars and 600+ reviews, a must-have for pros.
- • **Crystal-Clear Water Purification:** Coagulates impurities for cleaner, safer water every time.
- • **Iron-Free Formula for Pure Applications:** Ideal for dyeing, printing, and organic horticulture without contamination.
- • **Precision pH Control for Vibrant Gardens:** Transform hydrangea colors by lowering soil pH with ease.

## Overview

This 1kg tub of 17% iron-free aluminium sulphate is a versatile, crystalline powder trusted for water purification, textile dyeing, and organic horticulture. It effectively lowers soil pH to alter hydrangea colors and acts as a powerful mordant and coagulating agent. Manufactured in the UK by Trustleaf, it boasts high customer satisfaction and ranks among the top garden and pond treatment products.

## 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.

## 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 | B07P3W8JJ7 |
| Best Sellers Rank | 2,108 in Garden ( See Top 100 in Garden ) 6 in Water Garden & Pond Treatment |
| Brand | Trustleaf |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.5 4.5 out of 5 stars (626) |
| Item Form | Powder |
| Item Weight | 1000 Grams |
| Manufacturer | Trustleaf |

## Product Details

- **Brand:** Trustleaf
- **Item form:** Powder
- **Item weight:** 1000 Grams
- **Manufacturer:** Trustleaf

## Images

![1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3 - Image 1](https://m.media-amazon.com/images/I/41tviv47gwL.jpg)

## Available Options

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

## Questions & Answers

**Q: At what concentration do you use this for maintaining blue hydrangea colour?**
A: Hi dose is 50g per metre applied (normally in solution) three times, two weeks apart,  May / June

## Frequently Bought Together

- Trustleaf 1kg Tub ALUMINIUM SULPHATE 17% Iron Free Alum Al2(SO4)3
- Intralabs - Sodium Carbonate Light Fine Powder 1kg - Soda Ash Light

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**Shop now:** [https://www.desertcart.jp/products/225540643-1kg-tub-aluminium-sulphate-17-iron-free-alum-al2-so4](https://www.desertcart.jp/products/225540643-1kg-tub-aluminium-sulphate-17-iron-free-alum-al2-so4)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-31*