---
title: Magnesium Sulfate 7H₂O
date: 2025-02-21T09:44:07Z
modified: 2026-09-16T12:02:16Z
permalink: "https://allanchem.com/magnesium-sulfate-7h2o/"
type: page
status: publish
excerpt: ""
wpid: 2870
timestamp: 2026-09-16T12:02:16Z
tags: []
---

##### CAS Number

10034-99-8















##### Grade

ACS, High & Purity, USP















##### Packaging

Bag







































Magnesium Sulfate heptahydrate, commonly known as Epsom salt, is a chemical compound with the formula MgSO4·7H₂O.
**Chemical Formula:** MgSO4 .7H₂O
**Appearance:** Colorless to white crystalline granules or powder.
**Uses:**
**Pharmaceuticals:** Epsom salt is widely used for its therapeutic properties in medical treatments, particularly in bath soaks and topical applications.
**Cosmetics and Personal Care Industry:** Epsom salt is incorporated into cosmetic and personal care formulations for its exfoliating, cleansing, and soothing properties. It is valued for its ability to remove dead skin cells, unclog pores, and soften rough, dry skin.
**Mordant:** It can act as a mordant or dyeing assistant to enhance color fastness, improve dye uptake, and ensure uniform dye penetration in fabrics and leather products.
**Fertilizer:** Magnesium sulfate heptahydrate is utilized in agriculture as a source of magnesium and sulfur nutrients for plants. It is applied to soils or used as a foliar spray to correct magnesium deficiencies, enhance crop yields, and improve the quality of fruits, vegetables, and crops.
**Additional Applications:** Used as a drying agent, desiccant, or crystallization agent in chemical synthesis, pharmaceutical manufacturing, and laboratory procedures. Epsom salt can facilitate the precipitation and purification of organic compounds and biochemicals.







































<a class="position-relative wp-block-kubio-button__link style-DEJBniBX-N-link style-local-2443-link h-w-100 h-global-transition">Request more info</a>



















<a class="position-relative wp-block-kubio-button__link style-NsQ3lupwjl-link style-local-2446-link h-w-100 h-global-transition">download SDS</a>



















[Return to all products](https://www.allanchem.com/all-products/)