Isopropylate Triphenyl Phosphate (IPPP 35 )

Catalog NumberACM68937417-4

CAS Number68937-41-7

CategoryPhosphate Ester Flame Retardant

Synonyms	Isopropylate Triphenyl Phosphate ;Isopropyl Phenyl Diphenyl Phosphate;Tri(isopropylphenyl) Phosphate;
Molecular Weight	390
Molecular Formula	C27H33O4P
Appearance	Colorless or light yellow transparent liquid
Application	Widely used for fabric coating, circuit boards, flooring, textiles, PVC, phenolic resin and other fields.
Acid Value	0.1 (mgKOH/g)
APHA Color	≤50
Content	Phosphate content (P%) 8.6
Packaging	Net weight: 200KG/galvanized iron drum, 1000KG/IB barrel or 23 tons ISOTANK.
Specific Gravity	1.183
Viscosity	42-50 (mpa25℃)

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Case Study

Enhancing Flame Retardancy and Functionality of PVA Coatings with IPPP-Loaded Silica Aerogel Particles

Feng, Yilin, et al. Colloid and Polymer Science 302.10 (2024): 1557-1571.

A multifunctional polyvinyl alcohol (PVA) composite coating system was developed using hydrophilic mesoporous silica aerogel particles to encapsulate high loadings of isopropylate triphenyl phosphate (IPPP) flame retardant and oil-soluble dyes. This approach combined flame retardancy, coloration, and thermal insulation in a single coating system applied to cotton yarn substrates.
Methodology: IPPP-loaded silica aerogel particles were synthesized and incorporated into PVA coatings applied to cotton yarns via aqueous knife coating, with comprehensive characterization including morphological analysis, BET surface area measurement, thermal stability testing, and flame retardancy evaluation.
Key Results:
· Synthesized aerogel particles exhibited uniform morphology with average diameter of 10 µm and expanded pore structure due to IPPP incorporation, facilitating high flame retardant loading.
· Coating composites demonstrated progressive improvement in thermal decomposition temperature and limiting oxygen index values with increasing IPPP@SiO2 content, achieving simultaneous enhancement of flame retardancy and mechanical properties.
· Layer-by-layer knife coating application (0.4-4 mm thickness) created ordered porous structures with excellent thermal insulation properties, maintained through sintering processes that preserved particle packing integrity.
· Integrated Functionality: The system successfully combined flame retardancy, color integration, and thermal insulation in a coherent monolithic material with assisted PVA adhesion.

Enhanced Mineral Insulating Oil Performance with Isopropylate Triphenyl Phosphate

Wei, Jiaqiang, et al. IOP Conference Series: Earth and Environmental Science. Vol. 714. No. 4. IOP Publishing, 2021.

Mineral insulating oil, while widely used in oil-immersed transformers as both an insulating medium and coolant. A comprehensive modification approach was developed using isopropylate triphenyl phosphate (IPPP) as a flame retardant in combination with various nanomaterials (ferric oxide, copper, and magnesium hydrate) to simultaneously improve both the fire resistance and electrical performance of mineral insulating oil.
Methodology: Modified oil formulations were prepared through ultrasonic processing, incorporating IPPP at mass fractions of 5% and 10% for flame retardancy, nanoscale ferric oxide (100-300 nm) and copper (300-500 nm) at concentrations of 0.1-2%, and magnesium hydrate (10-20 μm) at 1-2% concentrations. Critical parameters including flash point, fire point, breakdown voltage, and kinematic viscosity were systematically evaluated.
Key Results:
IPPP demonstrated significant advancements in both flash point and fire point, while nanometer ferric oxide notably enhances breakdown voltage. Additionally, nanometer magnesium improved flash point, fire point, and breakdown voltage, and nanometer copper contributes to improvements in flash point, fire point, and kinematic viscosity. Consequently, the key properties of mineral insulating oil are enhanced through the use of nanomaterials and flame retardants.

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