Cresyl Diphenyl Phosphate Bulk Procurement Specs & Data
Essential Technical Specifications for Cresyl Diphenyl Phosphate Bulk Procurement
Procurement of Cresyl Diphenyl Phosphate (CAS 26444-49-5) requires strict adherence to defined physicochemical parameters to ensure performance consistency in polymer matrices. This Triaryl phosphate ester functions primarily as a flame retardant additive and secondary plasticizer, necessitating high industrial purity to prevent phase separation or blooming in finished goods. Buyers must validate Certificate of Analysis (COA) data against internal quality benchmarks before committing to bulk volumes.
The molecular weight of 340.32 g/mol and molecular formula C19H17O4P define the stoichiometric baseline for purity calculations. Critical acceptance criteria include acid value, water content, and color stability, as deviations directly impact the thermal history of the final polymer blend. For applications requiring a reliable plasticizer for PVC or rubber compounds, the specific gravity typically ranges between 1.18 and 1.20 g/cm³ at 20°C. The boiling point is approximately 360°C, indicating high thermal stability suitable for high-temperature processing environments.
The following table outlines the comparative specifications between standard commercial grades and high-purity grades required for sensitive formulations:
| Parameter | Standard Grade | High Purity Grade | Test Method |
|---|---|---|---|
| Appearance | Clear Liquid | Water White Liquid | Visual / APHA |
| Purity (GC Area %) | > 95.0% | > 98.5% | GC-MS |
| Acid Value (mg KOH/g) | < 0.5 | < 0.1 | Titration |
| Water Content (wt%) | < 0.2% | < 0.05% | Karl Fischer |
| Flash Point (°C) | > 220°C | > 230°C | COC / PMCC |
| Color (APHA) | < 100 | < 50 | ASTM D1209 |
Verification of these specs ensures the material acts effectively as a CDP phosphate equivalent in formulation systems. Deviations in acid value can catalyze polymer degradation, while excessive water content may cause voids during extrusion. Procurement teams should mandate GC-MS chromatograms with every shipment to confirm the absence of unreacted phenols or cresols.
Impact of Synthesis Chemistries on Cresyl Diphenyl Phosphate Bulk Purity Specs
The manufacturing pathway significantly influences the isomer distribution and impurity profile of the final product. Standard synthesis involves the esterification of cresol and phenol with phosphorus oxychloride (POCl3) in the presence of a catalyst. The ratio of ortho-, meta-, and para-cresyl isomers affects the low-temperature flexibility and compatibility with specific resin systems. Manufacturers controlling the feedstock purity can minimize side reactions that generate di-cresyl or tri-cresyl phosphate byproducts.
Advanced production facilities utilize fractional distillation under vacuum to isolate the target Cresyl Diphenyl Phosphate fraction from the reaction mixture. This step is critical for achieving the high purity grades listed in the specification table. Residual chloride ions from the phosphorylation process must be neutralized and washed out thoroughly, as they contribute to corrosion in processing equipment and instability in the final polymer. For detailed insights into substitution strategies, refer to this Cresyl Diphenyl Phosphate PVC plasticizer alternative guide.
Batch-to-batch consistency relies on tight control over reaction temperature and stoichiometry. Variations in the phenol-to-cresol ratio during synthesis will shift the molecular weight distribution, potentially altering the plasticizing efficiency. High-quality flame retardant additive production requires post-reaction filtration to remove catalyst residues, ensuring the final liquid remains clear and free from particulates that could clog filtration systems during downstream compounding.
Regulatory Compliance and Safety Data Requirements for Cresyl Diphenyl Phosphate
While regulatory landscapes vary by region, procurement contracts must stipulate the provision of comprehensive Safety Data Sheets (SDS) compliant with GHS standards. The SDS must accurately reflect the flash point of 230°C and solubility characteristics, noting insolubility in water but solubility in organic solvents like benzene and toluene. Documentation should include toxicological data relevant to industrial handling, focusing on inhalation and dermal exposure limits.
Quality assurance protocols at NINGBO INNO PHARMCHEM CO.,LTD. emphasize batch-specific testing rather than generic regulatory claims. Buyers should request HPLC or GC-MS reports confirming the absence of restricted substances often associated with lower-grade organophosphates. It is critical to verify that the material meets internal safety specifications for workplace exposure, particularly regarding mist formation during high-temperature mixing.
Transport classification typically falls under non-hazardous or low-hazard categories due to the high flash point, but local regulations must be confirmed. The SDS should provide clear guidance on storage conditions, recommending cool, dry, and well-ventilated areas to maintain stability. For performance benchmarking against similar chemistries, review the Cresyl Diphenyl Phosphate vs TCP plasticizer performance comparison to understand safety and efficacy nuances.
Bulk Packaging Solutions and Logistics for CDP Procurement Orders
Standard bulk packaging for Cresyl Diphenyl Phosphate includes 200kg steel drums or ISO tanks for larger volumes. Drums must be lined or coated to prevent interaction with the metal surface, preserving the low acid value of the contents. Palletization should comply with international shipping standards, ensuring drums are secured to prevent leakage during transit. For high-volume users, ISO tank containers offer a cost-effective solution while minimizing packaging waste.
Logistics planning must account for the liquid density of approximately 1.19 g/cm³ when calculating load weights. Storage facilities should be equipped with spill containment measures, as the material is soluble in many organic solvents and could compromise certain flooring types if leaked. Lead times for bulk orders depend on production scheduling and inventory levels of the Triaryl phosphate stock.
Shipping documentation must include the correct HS code and emergency contact information. Buyers should inspect incoming containers for seal integrity before acceptance. Proper handling equipment, such as drum pumps or heated transfer lines for viscous batches in cold climates, ensures efficient unloading without contamination. Consistency in packaging quality is as vital as chemical quality to prevent introduction of foreign materials into the supply chain.
Vendor Qualification Criteria and Bulk Pricing Factors for CDP Supply
Qualifying a supplier for CDP phosphate requires an audit of their quality management systems and production capacity. Key criteria include the ability to provide consistent COAs, traceability of raw materials, and stability of supply during market fluctuations. Pricing models for bulk procurement are typically tied to raw material indices for phenol and cresol, alongside energy costs associated with the distillation process.
Long-term supply agreements often secure better pricing tiers and prioritize allocation during periods of high demand. Evaluating a vendor involves reviewing their track record for on-time delivery and technical support capabilities. NINGBO INNO PHARMCHEM CO.,LTD. maintains rigorous quality controls to support industrial clients requiring reliable industrial purity materials. Buyers should assess the vendor's ability to handle custom specifications, such as adjusted isomer ratios for specific polymer compatibility.
Cost considerations should extend beyond the unit price to include total cost of ownership, factoring in consistency, technical support, and logistics reliability. A supplier offering Cresyl Diphenyl Phosphate flame retardant additive with verified specs reduces the risk of production downtime caused by off-spec materials. Establishing a partnership with a manufacturer capable of scaling production ensures continuity for long-term manufacturing projects.
Securing a reliable supply chain for this specialty chemical mitigates risks associated with market volatility. Procurement teams should prioritize vendors who demonstrate transparency in their manufacturing processes and testing methodologies. This approach ensures that the material performs consistently in flame retardant systems and polymer formulations.
To request a batch-specific COA, SDS, or secure a bulk pricing quote, please contact our technical sales team.