---
title: Phosphotungstic Acid
date: 2025-03-05T09:10:26Z
modified: 2026-09-14T09:16:32Z
permalink: "https://allanchem.com/phosphotungstic-acid/"
type: page
status: publish
excerpt: ""
wpid: 4383
timestamp: 2026-09-14T09:16:32Z
tags: []
---

##### CAS Number

12067-99-1















##### Grade

Reagent















##### Packaging

Plastic Drum







































Phosphotungstic Acid, also known as phosphotungstic acid hydrate, is a type of polyoxometalate, which consists of a central tungsten atom surrounded by twelve oxygen atoms, forming a tungsten oxide cluster.
**Chemical Formula:** H3PW12O40
**Appearance:** Yellow to pale yellow crystals or as a yellow powder
**Uses:**
**Analytical Chemistry:** Phosphotungstic acid is widely used as a reagent in analytical chemistry for the detection and determination of substances. It acts as a staining agent for visualizing proteins and other biomolecules on gels in techniques such as polyacrylamide gel electrophoresis (PAGE) and isoelectric focusing (IEF).
**Pharmaceuticals:** Utilized in pharmaceutical analysis for the detection and quantification of alkaloids, carbohydrates, and other organic compounds.
**Coagulant:** It can act as a coagulant or flocculant to aid in the precipitation and removal of contaminants, contributing to the purification of water resources.
**Material Science:** Phosphotungstic acid is examined for its potential use in the synthesis of functional materials with applications in catalysis, energy storage, and sensing.







































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