AO4500
product description
| Chemical name | 4,4'-butylidene-bis(3-methyl-6-tert-butylphenyl) alkyl(C13)-phosphite | ||
| CAS number | 13003-12-8 | ||
| Molecular structure | ![]() |
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| Product form | Pale yellow and transparent Liquid | ||
| Specifications | TEST | SPECIFICATION | |
| Phosphorus content (%) | 4.8 | ||
| Color (APHA) | <100 | ||
| Acid value (mg KOH/g) | ≤0.10 | ||
| Refractive index (25℃) | 1.4880-1.4950 | ||
| Specific gravity (25℃) | 0.940-0.9600 | ||
| Application | YIHOO AO4500 is a nonylphenol-free phosphite antioxidant, specifically formulated as a multifunctional stabilizer for organic polymers. It exhibits excellent antioxidant performance at a typical dosage of 0.1% to 3.0 wt%, effectively enhancing the color fastness, light stability and clarity of polymer end products—this effect is particularly pronounced when compounded with primary metal stabilizers and epoxy stabilizers. In rubber applications, YIHOO AO4500 delivers superior color improvement performance compared to conventional TNPP. This product is widely applicable to polyolefins, rubbers and PVC materials. The recommended dosage ranges from 0.05% to 1.0%. | ||
| Pakcage | / | ||


