---
product_id: 62088656
title: "Potassium alum, 1 kg tin, aluminium potassium sulphate dodecahydrate, natural"
brand: "algin"
price: "€ 55.64"
currency: EUR
in_stock: true
reviews_count: 5
category: "Algin"
url: https://www.desertcart.ie/products/62088656-potassium-alum-1-kg-tin-aluminium-potassium-sulphate-dodecahydrate-natural
store_origin: IE
region: Ireland
---

# Solubility increases with heat Versatile multi-use compound High-purity crystalline form Potassium alum, 1 kg tin, aluminium potassium sulphate dodecahydrate, natural

**Brand:** algin
**Price:** € 55.64
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your experiments and essentials with nature’s crystal powerhouse! ❄️

## Quick Answers

- **What is this?** Potassium alum, 1 kg tin, aluminium potassium sulphate dodecahydrate, natural by algin
- **How much does it cost?** € 55.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/62088656-potassium-alum-1-kg-tin-aluminium-potassium-sulphate-dodecahydrate-natural)

## Best For

- algin enthusiasts

## Why This Product

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

## Key Features

- • **Crystal-clear purity:** Premium aluminium potassium sulphate dodecahydrate in large, untreated crystals
- • **Multi-functional marvel:** From natural deodorants to food stabilizer and fire protection—one compound, endless uses
- • **Heat-activated solubility:** Dissolves rapidly in hot water for effortless crystal growing or formulation
- • **Trusted food-grade additive:** EU-approved E522 for enhancing egg whites and glazing fruits, ensuring safe culinary innovation
- • **DIY crystal growing made epic:** Grow massive, Instagram-worthy crystals with ease—perfect for science enthusiasts and creative pros

## Overview

Potassium alum (aluminium potassium sulphate dodecahydrate) is a natural, untreated crystalline compound prized for its heat-responsive solubility and versatile applications. Ideal for growing large crystals, it also serves as a traditional blood-stiller, odor reducer in deodorants, food stabilizer (EU-approved E522), and fire protection agent. This 1 kg tin offers premium quality for professional and creative uses alike.

## Description

Potassium alum, aluminium potassium sulphate dodecahydrate, potassium aluminium sulphate dodecahydrate, potassium alum, alum. Features: the solubility of the alum rises significantly with temperature. Large crystals can be grown from a hot, saturated solution. It used to be important in tanning and dyeing. Common as a blood-stiller in shaving items. Due to the odour-reducing properties, it is found in some deodorants. Inhibits sweat from decomposing into butyric acid. It is used as a strengthening and stabilising agent in food. It is licensed in the EU as food additive with the designation E 522, exclusively for egg whites, glazed, candied or crystallised fruits and vegetables. Fire protection for wooden constructions.

Review: Einfache Handhabung, tolles Ergebnis
Review: Ich hatte für meine Tochter hier einen Experimentierkasten zum züchten von Kristallen gekauft. Leider sind dabei die Tütchen mit dem Alaun a) sehr klein und b) nur in begrenzter Stückzahl vorhanden - daher den Kauf von diesem Kilo. Es ist fantastisch: Die Kristalle wurden so groß, dass wir sie nicht mehr aus dem Glas bekommen haben. Dabei haben wir erst einen kleinen Anfangskristall gezüchtet, den Rest dann im Wasserbad auf dem Herd wieder verflüssigt (es ist dabei zu beachten, dass man abwartet bis das Material sich komplett aufgelöst hat) danach kurz abkühlen lassen und den kleinen Anfangskristall dann an einem Bändchen rein gehangen. Fantastisch! Vor allem für den Preis echt eine tolle Alternative zum teuren Set.

## Features

- Aluminium potassium sulphate dodecahydrate, untreated.
- Crystals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B018TZEODQ |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 2,500,229 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 655,581 in Cooking & Dining |
| Customer Reviews | 4.5 4.5 out of 5 stars (386) |
| Date First Available | 17 Jan. 2016 |
| Item Package Quantity | 1 |
| Item Weight | 998 g |
| Manufacturer | Algin |
| Manufacturer reference | AC-145 |
| Material | Aluminium |
| Part number | AC-145 |
| Size | 1 kg (Pack of 1) |

## Product Details

- **Brand:** Algin
- **Item form:** Powder
- **Item weight:** 998 g
- **Manufacturer:** Algin

## Images

![Potassium alum, 1 kg tin, aluminium potassium sulphate dodecahydrate, natural - Image 1](https://m.media-amazon.com/images/I/71mG58jpC0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***U on 31 August 2023*

Einfache Handhabung, tolles Ergebnis

### ⭐⭐⭐⭐⭐ Review
*by H***. on 17 June 2019*

Ich hatte für meine Tochter hier einen Experimentierkasten zum züchten von Kristallen gekauft. Leider sind dabei die Tütchen mit dem Alaun a) sehr klein und b) nur in begrenzter Stückzahl vorhanden - daher den Kauf von diesem Kilo. Es ist fantastisch: Die Kristalle wurden so groß, dass wir sie nicht mehr aus dem Glas bekommen haben. Dabei haben wir erst einen kleinen Anfangskristall gezüchtet, den Rest dann im Wasserbad auf dem Herd wieder verflüssigt (es ist dabei zu beachten, dass man abwartet bis das Material sich komplett aufgelöst hat) danach kurz abkühlen lassen und den kleinen Anfangskristall dann an einem Bändchen rein gehangen. Fantastisch! Vor allem für den Preis echt eine tolle Alternative zum teuren Set.

### ⭐⭐⭐⭐ Review
*by H***S on 6 June 2025*

Einwandfrei

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-04*