AO4500 Liquid - Pale Yellow Transparent Liquid | China Suppliers & Factory - CAS 13003-12-8
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 |
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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%. |
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Frequently Asked Questions
Q
What is YIHOO AO4500 and what type of antioxidant is it?
YIHOO AO4500 is a nonylphenol-free phosphite antioxidant formulated as a multifunctional stabilizer for organic polymers. Its chemical name is 4,4'-butylidene-bis(3-methyl-6-tert-butylphenyl) alkyl(C13)-phosphite, with CAS number 13003-12-8. It appears as a pale yellow, transparent liquid.
Q
What is the recommended dosage for YIHOO AO4500?
The typical dosage of YIHOO AO4500 ranges from 0.1% to 3.0 wt% for general antioxidant performance. For specific applications such as polyolefins, rubbers, and PVC materials, the recommended dosage is between 0.05% and 1.0%.
Q
What materials is YIHOO AO4500 compatible with?
YIHOO AO4500 is widely applicable to polyolefins, rubbers, and PVC materials. It is especially effective when used in combination with primary metal stabilizers and epoxy stabilizers, delivering enhanced color fastness, light stability, and product clarity.
Q
How does YIHOO AO4500 compare to conventional TNPP in rubber applications?
In rubber applications, YIHOO AO4500 delivers superior color improvement performance compared to conventional TNPP (tris(nonylphenyl) phosphite). Additionally, as a nonylphenol-free product, it offers a more environmentally compliant alternative.
Q
What are the key physical and chemical specifications of YIHOO AO4500?
Key specifications include: Phosphorus content of 4.8%, Color (APHA) below 100, Acid value ≤0.10 mg KOH/g, Refractive index (25°C) between 1.4880 and 1.4950, and Specific gravity (25°C) between 0.940 and 0.9600.
Q
Why is YIHOO AO4500 considered a nonylphenol-free antioxidant and why does it matter?
YIHOO AO4500 is specifically formulated without nonylphenol, a substance subject to increasing regulatory restrictions due to environmental and health concerns. Choosing a nonylphenol-free phosphite antioxidant helps manufacturers meet compliance requirements while maintaining high-performance stabilization in polymer processing.