For B2B buyers in the chemical industry, understanding the precise specifications of a product like Tris(2-hydroxyethyl)cyanuric acid (THEIC), CAS 839-90-7, is critical for ensuring optimal performance and avoiding costly errors. As a leading manufacturer and supplier, NINGBO INNO PHARMCHEM CO.,LTD. believes in empowering our clients with knowledge. This guide outlines the essential specifications that define high-quality THEIC and what to look for when you buy.

Appearance: The First Indicator of Quality

Typically, THEIC is supplied as a white crystalline powder. Any significant deviation from this appearance, such as discoloration or the presence of foreign matter, could indicate contamination or improper storage. While subtle variations in crystal size might occur, the color and form are primary visual cues for initial quality assessment.

Purity (Assay): The Core Performance Metric

The assay, or purity, of THEIC is arguably its most important specification. For most industrial applications, including high-performance coatings, wire enamels, and effective PVC stabilization, a purity of 99% is considered standard for premium grades. Higher purity ensures that the chemical will perform as expected in complex formulations without introducing unwanted side reactions or contaminants that could compromise the end product’s properties.

Key Technical Properties: Beyond Purity

Several other properties are crucial for understanding THEIC's suitability for specific applications:

  • Melting Range: The melting range provides insight into the purity and consistency of the material. For THEIC, a typical specification is around 133.5-137.0 °C. A narrow melting range generally indicates a purer substance.
  • Hydroxyl Value: This value, often expressed in mg KOH/g, quantifies the number of hydroxyl groups present in the molecule. It is a critical parameter for THEIC's function as a cross-linking agent or reactant in esterification and polymerization processes. A typical specification is around 640 ± 10 mg KOH/g.
  • Acidity: Low acidity is important to prevent unwanted reactions, especially in sensitive formulations. Specifications typically cap acidity at around ≤1.0 mg KOH/g.
  • pH Value: The pH of a solution can indicate the presence of acidic or basic impurities. THEIC solutions are generally neutral, with a typical pH range of 6.5-7.5.
  • Turbidity: Measured in NTU (Nephelometric Turbidity Units), this indicates the clarity of a solution. Low turbidity (≤1.0 NTU) suggests minimal insoluble impurities.

Sourcing THEIC with Confidence

When you are ready to purchase THEIC, partnering with a reputable manufacturer like NINGBO INNO PHARMCHEM CO.,LTD. ensures you receive products that consistently meet these critical specifications. We provide detailed technical data sheets (TDS) and certificates of analysis (CoA) for our 99% pure THEIC, giving you the confidence needed for your procurement decisions. Contact us to discuss your requirements and obtain a competitive THEIC price.