PHOSPHOMOLYBDIC ACID

PHOSPHOMOLYBDIC ACID

(ACS / ISO / Ph Eur Grade)
CAS Number: 514-82-1
Chemical Formula: H₃PMo₁₂O₄₀ · xH₂O
Molecular Weight: ~1825.25 g/mol (hydrated form varies)
Index No: 047-001-00-2
Grade: EMSURE® (ACS, ISO, Reag. Ph Eur compliant)
Appearance: Yellow to green crystalline powder or solid
Purity: ≥ Analytical grade (high purity for lab use)

Description
Phosphomolybdic acid is a heteropoly acid widely used as a strong oxidizing agent and analytical reagent. It is highly soluble in water and forms characteristic blue complexes upon reduction, making it essential in qualitative and quantitative analysis.

Key Properties
Strong inorganic acid
Powerful oxidizing agent
Forms “molybdenum blue” complexes
Highly soluble in water and alcohols
Sensitive to reducing agents

Applications
Analytical chemistry: Detection of phenols, alkaloids, lipids
Chromatography (TLC staining reagent)
Biochemical assays: Protein & lipid visualization
Catalysis: Acid catalyst in organic synthesis
Material science: Nanomaterials & coatings research

Specifications (Typical)
Assay: ≥ 99% (ACS compliant)
Solubility: Freely soluble in water
Residue on ignition: Within pharmacopeia limits
Heavy metals: Trace level (controlled)

Hazard Information
⚠️ Corrosive (GHS05) – Causes severe skin burns and eye damage
☠️ Toxic (GHS06) – Harmful if swallowed or inhaled
May cause respiratory irritation
Environmental hazard if improperly disposed

Handling & Safety
Use PPE: gloves, goggles, lab coat
Handle in well-ventilated area / fume hood
Avoid inhalation and direct contact
Do not mix with strong reducing agents or incompatible materials

Storage
Store in tightly closed container
Keep in cool, dry, well-ventilated area
Protect from moisture and contamination
Away from incompatible substances

Packaging
Typical pack sizes: 25 g, 100 g, 500 g
Supplied in chemical-resistant containers (as shown)
Comparable Suppliers
Merck (EMSURE®)
Sigma-Aldrich
Loba Chemie
Molychem
BDH / VWR
J.T. Baker
Fisher Scientific
Applications Insight (WLS Note)
Commonly used by labs for TLC spray reagent and biochemical staining, making it a high-demand reagent for academic, pharmaceutical, and research laboratories.