---
title: Potassium Bromide
date: 2025-03-05T12:31:23Z
modified: 2026-09-15T04:47:44Z
permalink: "https://allanchem.com/potassium-bromide/"
type: page
status: publish
excerpt: ""
wpid: 4668
timestamp: 2026-09-15T04:47:44Z
tags: []
---

##### CAS Number

7758-02-3















##### Grade

ACS, Photo, USP















##### Packaging

Fiber Drum







































Potassium Bromide is a compound readily soluble in water. It is an ionic compound formed by the combination of potassium (K⁺) and bromide (Br⁻) ions.
**Chemical Formula:** KBr
**Appearance:** Colorless or white crystals or as a crystalline powder.
**Uses:**
**Medicine:** In the past, potassium bromide was used as an anticonvulsant medication to treat epilepsy and seizure disorders.
**Photography:** Potassium bromide has historically been used in traditional black-and-white photography as a component of photographic developer solutions. It acted as a restrainer, controlling the development of silver halide crystals on photographic film or paper, thereby preventing fogging and producing clear images.
**Chemical Synthesis:** Potassium bromide serves as a source of bromide ions in chemical reactions and synthesis processes. It is employed in organic synthesis, pharmaceutical manufacturing, and laboratory research.







































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