China AO4500 Liquid Suppliers - Pale Yellow Transparent Liquid from Reliable 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 |
Nonylphenol-Free Phosphite Antioxidant
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 with the chemical name 4,4'-butylidene-bis(3-methyl-6-tert-butylphenyl) alkyl(C13)-phosphite (CAS: 13003-12-8). It is a multifunctional stabilizer designed for use in organic polymers, available in pale yellow transparent liquid form.
Q
What is the recommended dosage of YIHOO AO4500 in polymer applications?
The typical dosage of YIHOO AO4500 is 0.1% to 3.0 wt% for general antioxidant performance. For specific applications such as polyolefins, rubbers and PVC materials, the recommended dosage ranges from 0.05% to 1.0%, depending on the polymer system and processing conditions.
Q
Which materials is YIHOO AO4500 compatible with?
YIHOO AO4500 is widely applicable to polyolefins, rubbers, and PVC materials. Its performance is particularly enhanced when compounded with primary metal stabilizers and epoxy stabilizers, making it a versatile choice across various polymer processing industries.
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 formulation, it meets stricter environmental and regulatory requirements while maintaining high stabilization efficiency.
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℃) between 1.4880 and 1.4950, and Specific gravity (25℃) between 0.940 and 0.9600. These parameters ensure consistent product quality and performance.
Q
Why is YIHOO AO4500 considered a nonylphenol-free product and what are the benefits?
YIHOO AO4500 is specifically formulated without nonylphenol (NP) or nonylphenol ethoxylates (NPEs), which are subject to increasing environmental restrictions globally due to their endocrine-disrupting properties. By being nonylphenol-free, YIHOO AO4500 helps manufacturers comply with REACH, RoHS and other international regulations while delivering excellent antioxidant and stabilization performance.