Thermo Scientific™ N,N,N',N'-Tetramethyl-p-phenylenediamine dihydrochloride ≥98%

Thermo Scientific™ N,N,N′,N′-Tetramethyl-p-phenylenediamine dihydrochloride (TMPD) is a high-purity redox indicator used primarily in the oxidase test for identifying cytochrome c oxidase activity in microorganisms. With ≥98% assay purity, TMPD is widely used in clinical, food, and environmental microbiology for differentiating pathogenic from non-pathogenic bacterial strains based on respiratory enzyme activity.

Key Features

• ≥98% assay purity – Suitable for sensitive redox assays
• Reliable colorimetric reagent – Used in oxidase testing of bacteria
• Redox mediator – Transfers electrons in cytochrome c oxidase test
• Stable solid form – Supplied in amber glass bottles to prevent light degradation
• Melting Point: ~228 °C (decomposes)

Specifications

Applications

• Microbiology – Oxidase test for bacterial cytochrome c oxidase
• Biochemical Analysis – Redox mediator in enzyme activity studies
• Clinical & Diagnostic Labs – Pathogen identification and differentiation
• Environmental & Food Testing – Detection of oxidase-positive organisms
• Teaching Labs – Educational demonstrations of microbial respiration

Ordering Information

Caution

TMPD may darken over time during storage. Store in a cool, dry place, away from light and moisture to maintain stability.

Thermo Scientific™ TMPD (≥98%) is a high-quality reagent essential for oxidase testing and microbial identification. Its consistent performance and purity make it ideal for microbiological laboratories involved in clinical diagnostics, environmental surveillance, and bacterial taxonomy.