For B2B procurement managers, R&D scientists, and product formulators in the chemical industry, understanding the precise technical specifications of raw materials is paramount. Melamine Pyrophosphate (MPP), a highly sought-after halogen-free flame retardant, is no exception. At NINGBO INNO PHARMCHEM CO.,LTD., we are committed to transparency and providing our clients with comprehensive data. This article details the key technical properties of our Melamine Pyrophosphate (CAS No. 15541-60-3), highlighting why it is the preferred choice for numerous demanding applications.

Chemical Identity and Core Properties

Chemical Name: Melamine Pyrophosphate
CAS Number: 15541-60-3
Molecular Formula: C₃H₁₀N₆O₇P₂ (or similar variations depending on hydration/stoichiometry, often presented as (C₃N₆H₆)₂·H₄P₂O₇)
Molecular Weight: Approximately 304.1 g/mol

Typical Specifications and Their Significance:

  • Appearance: White Powder. This consistent physical form is crucial for ease of handling, dispersion, and integration into various formulations without affecting the aesthetic of the final product.
  • Nitrogen Content (N % w/w): Typically >38%. The high nitrogen content is a key factor in its flame retardant mechanism, contributing to gas-phase flame inhibition and char promotion.
  • Phosphorus Content (P % w/w): Typically >14%. The phosphorus content is essential for its role as an acid source in intumescent systems and for promoting char formation in the condensed phase, thereby enhancing thermal stability and fire resistance.
  • pH Value (20℃, 100g water): Usually in the range of 5.0-6.0. This neutral to slightly acidic pH is beneficial for compatibility with a wide range of materials and processing conditions, minimizing unwanted side reactions.
  • Specific Gravity: Approximately 1.80 g/cm³. This density is typical for such inorganic-organic hybrid compounds and is important for formulation calculations and material handling.
  • Water Solubility (20℃, 100g water): Generally <0.15 g/100g water. Low water solubility is a significant advantage, as it prevents leaching or degradation of the flame retardant when exposed to moisture, ensuring long-term performance and stability in diverse environments.
  • Fineness (30μm sieve pass rate %): Typically >99%. A fine particle size is critical for uniform dispersion within polymer matrices or coatings, leading to consistent flame retardant performance and minimal impact on the mechanical properties of the base material.

Why These Specifications Matter to Our Customers

As a leading Melamine Pyrophosphate supplier in China, NINGBO INNO PHARMCHEM CO.,LTD. ensures that our product consistently meets these demanding specifications. The high nitrogen and phosphorus content guarantees effective flame retardation, while the fine particle size and low water solubility ensure excellent processability and durability. These attributes make our MPP an ideal choice for manufacturers looking to buy Melamine Pyrophosphate for applications in plastics, rubber, and intumescent coatings.

We encourage you to request a quote or contact our technical sales team to discuss how our high-quality Melamine Pyrophosphate can meet your specific formulation needs. Partner with NINGBO INNO PHARMCHEM CO.,LTD. for reliable, high-performance flame retardant solutions manufactured in China.