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China Suppliers of CAS 1809-19-4 Colorless to Light Yellow Transparent Liquid from Reliable Factory
Product Description
| Chemical name | Dibutyl phosphite | ||
| CAS number | 1809-19-4 | ||
| Molecular structure |
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| Product form | Colorless to light yellow transparent liquid | ||
| Specifications | TEST | SPECIFICATION | |
| Phosphorus content (%) | 14.5 – 16.0 | ||
| Purity (%) | ≥ 94.0 | ||
| Acid value (mg KOH/g) | ≤ 15.0 | ||
| Specific gravity (25℃) | 0.980 – 1.010 | ||
| Application | EP-AW YIHOO AO04 is an eco-friendly phenol-free phosphite, specifically engineered as an extreme pressure anti-wear (EP-AW) agent for lubricating oils. This product delivers outstanding EP-AW performance and excellent compatibility with base oils and other additives. It is ideal for formulating a broad spectrum of lubricants, including industrial gear oils, automotive gear oils, cutting oils, and other metalworking fluids. The recommended dosage ranges from 0.3% to 1%. Additionally, it can be compounded with other single-functional additives to produce multifunctional lubricant additive packages. | ||
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Frequently Asked Questions
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Q What is Dibutyl Phosphite (CAS 1809-19-4) used for?Dibutyl phosphite (YIHOO AO04) is primarily used as an extreme pressure anti-wear (EP-AW) additive in lubricating oils. It is suitable for industrial gear oils, automotive gear oils, cutting oils, and various metalworking fluids, helping to reduce friction and protect metal surfaces under high-pressure conditions.
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Q What is the recommended dosage of YIHOO AO04 in lubricant formulations?The recommended dosage of YIHOO AO04 ranges from 0.3% to 1% in lubricant formulations. The optimal dosage may vary depending on the specific application and the desired performance level of the finished lubricant.
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Q Is YIHOO AO04 compatible with other lubricant additives?Yes. YIHOO AO04 exhibits excellent compatibility with base oils and a wide range of other lubricant additives. It can also be compounded with other single-functional additives to create multifunctional lubricant additive packages, offering greater formulation flexibility.
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Q What makes YIHOO AO04 an eco-friendly choice compared to conventional phosphite additives?YIHOO AO04 is a phenol-free phosphite, which means it does not contain phenolic compounds that can pose environmental and health concerns. This makes it a more environmentally responsible option for lubricant formulators seeking greener additive solutions without compromising performance.
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Q What are the key physical and chemical properties of Dibutyl Phosphite?Dibutyl phosphite is a colorless to light yellow transparent liquid. Key specifications include a phosphorus content of 14.5–16.0%, a purity of ≥94.0%, an acid value of ≤15.0 mg KOH/g, and a specific gravity of 0.980–1.010 at 25℃.
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Q Can Dibutyl Phosphite be used in both industrial and automotive lubricants?Yes. YIHOO AO04 (Dibutyl Phosphite) is versatile and suitable for a broad range of lubricant types, including industrial gear oils, automotive gear oils, cutting oils, and other metalworking fluids, making it a highly adaptable EP-AW additive for both industrial and automotive applications.

