3,5-Dimethylpyrazole

CAS NO. 67-51-6

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Product Description

Product Name	3,5-Dimethylpyrazole (3,5-DMP) (Isocyanate Blocking Agent / Nitrification Inhibitor)
CAS NO.	67-51-6
Formula & Weight	C5H8N2 (MW: 96.13 g/mol)
Chemical Structure
Technical Specifications	Appearance: White to off-white crystalline powder Purity (GC): ≥ 99.5% (High Purity Grade) Melting Point: 106.0°C - 108.0°C Moisture: ≤ 0.5% Solubility: Soluble in organic solvents, slightly soluble in water
Key Applications	3,5-DMP is a versatile heterocyclic compound serving two major industries: 1. Polyurethane Industry (Blocking Agent): Stable Bonding: Reacts with isocyanates to form stable bonds at room temperature, extending shelf-life of 1K PU systems. Controlled Deblocking: Releases isocyanate active groups at 110°C - 120°C, allowing for lower curing temperatures compared to other blocking agents (e.g., Caprolactam). Recyclability: Can be recovered after the curing process, reducing formulation costs. 2. Agrochemicals (Nitrification Inhibitor): Fertilizer Efficiency: Inhibits the activity of nitrosomonas bacteria, slowing the conversion of ammonium to nitrate. Eco-Friendly: Reduces nitrogen leaching and greenhouse gas emissions (N2O), aligning with EU environmental regulations.
Packaging & Supply	Standard Packaging: 25kg Fiber Drum or Kraft Bag with PE liner. Storage: Store in a cool, dry place. Stable under normal conditions.

Related Synthesis Materials & Fertilizer Additives

We supply both the upstream raw materials and alternative fertilizer synergists:

Raw Material

Acetylacetone

Key precursor for synthesizing 3,5-DMP.

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Fertilizer Synergist

Dicyandiamide (DCD)

The industry standard nitrification inhibitor.

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Heterocycles

Sourcing Isocyanate Blockers?

Royalchem's 3,5-DMP offers a precise deblocking temperature of ~110°C, ideal for energy-saving coating processes.
We also supply Acetylacetone and DCD. Contact us for a combined quote.