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Light Yellow Transparent Liquid - CAS 64051-29-2 - Reliable China Suppliers & Factory
Product Description
| Chemical Name | DIOLEYL PHOSPHONATE | ||
| CAS Number | 64051-29-2 | ||
| Molecular Structure |
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| Product Form | Light yellow transparent liquid | ||
| Specifications | TEST | SPECIFICATION | |
| Phosphorus content (%) | 5.0 – 5.7 | ||
| Color number (APHA) | ≤ 100 | ||
| Refractive index (25℃) | 1.4550 – 1.4650 | ||
| Acid value (mg KOH/g) | ≤ 4.5 | ||
| Specific gravity (25℃) | 0.870 – 0.920 | ||
| Application |
Key Application Areas
ECO-FRIENDLY
PHENOL-FREE
YIHOO AO18 is a 100% phenol-free, eco-friendly dialkylphosphate ester antioxidant that is widely applicable to polyolefins, PVC, lubricating oils and other polymer systems. As an auxiliary stabilizer and mixed metal salt stabilizer for PVC materials, it effectively enhances initial color retention and anti-precipitation performance of the substrates. For unsaturated polyesters, this product can inhibit yellowing induced during resin synthesis, maintaining long-term color stability of the end products. Additionally, it serves as an extreme pressure anti-wear (EP-AW) agent in lubricating oils, significantly boosting the anti-wear performance of the formulated oils. |
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Frequently Asked Questions
Q
What is DIOLEYL PHOSPHONATE (CAS 64051-29-2)?
DIOLEYL PHOSPHONATE (CAS 64051-29-2), commercially known as YIHOO AO18, is a 100% phenol-free dialkylphosphate ester antioxidant. It appears as a light yellow transparent liquid and is designed for use in polyolefins, PVC, lubricating oils, and other polymer systems as an eco-friendly stabilizer and antioxidant.
Q
What are the main applications of YIHOO AO18?
YIHOO AO18 serves multiple applications: it functions as an auxiliary stabilizer and mixed metal salt stabilizer for PVC materials, an antioxidant for polyolefins, a yellowing inhibitor during unsaturated polyester resin synthesis, and an extreme pressure anti-wear (EP-AW) agent in lubricating oil formulations.
Q
What makes YIHOO AO18 an eco-friendly antioxidant?
YIHOO AO18 is formulated to be 100% phenol-free, which means it does not contain phenolic compounds that can pose environmental and health concerns. This makes it a safer and more sustainable alternative to traditional phenolic antioxidants in polymer and lubricant applications.
Q
What are the key technical specifications of DIOLEYL PHOSPHONATE?
The key specifications include: Phosphorus content of 5.0–5.7%, Color number (APHA) ≤ 100, Refractive index (25℃) between 1.4550–1.4650, Acid value ≤ 4.5 mg KOH/g, and Specific gravity (25℃) in the range of 0.870–0.920. These parameters ensure consistent quality and performance in end-use applications.
Q
How does YIHOO AO18 improve PVC material performance?
When used as an auxiliary stabilizer and mixed metal salt stabilizer in PVC materials, YIHOO AO18 effectively enhances initial color retention, helping the material maintain its appearance over time. It also improves anti-precipitation performance, preventing the migration or separation of additives within the PVC matrix.
Q
Can YIHOO AO18 be used in lubricating oil formulations?
Yes. YIHOO AO18 functions as an extreme pressure anti-wear (EP-AW) agent in lubricating oils. It significantly boosts the anti-wear performance of formulated oils, helping to protect metal surfaces under high-pressure and high-load conditions, extending the service life of machinery and equipment.

