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Diphenylphosphine oxideCAS： 4559-70-0
Diphenylphosphine oxide CAS：4559-70-0
Product Name: Diphenylphosphine oxide
CAS: 4559-70-0
EINECS: 625-671-2
MF: C12H11OP
MW: 202.19
Density: Not available
Melting Point: 56-57 °C
Boiling Point: 102-105 °C at 0.2 mmHg
Purity: ≥98%
Appearance: White solid
Packaging: 10g, 25g, 100g, 500g, 1kg, 25kg or customized
Grade: Fine Chemical Grade, Industrial Grade
Storage Condition: Store at room temperature (20-25°C), keep in cool, dry and inert atmosphere environment, avoid light and moisture
Shelf Life: 2 years under proper storage
HS Code: Not available
Our Advantages: Supply Capacity & Service
As a professional fine chemical manufacturer in China,Lingzhiyue technology provide comprehensive product support, including:
✅ Competitive price, stable bulk supply to meet large-scale procurement needs.
✅ Custom Solutions: Custom Purity & Packaging to match different application scenarios and procurement requirements.
✅ Full test reports: COA, HPLC, NMR, MSDS and professional technical support for safe use and quality confirmation.
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If you need real-time price, inventory information or sample support, please feel free to send an inquiry. Request COA & Quotation:Lingzhiyue@aliyun.com
Synonyms: DPPO, HPOPh2, Diphenylphosphaneoxide, Diphenylphosphinoxid, Diphenylphosphinit
Diphenylphosphine oxide (CAS：4559-70-0) is a high-purity organophosphorus fine chemical compound with the molecular formula C12H11OP. It appears as a white solid at room temperature, features stable chemical properties and moderate reactivity, and is a core intermediate widely used in organic synthesis, catalytic reactions and polymer material modification industries. This product is a typical secondary phosphine oxide with excellent ligand properties and synthetic auxiliary functions, commonly applied in laboratory R&D and industrial fine chemical production.
1. Organic Synthesis Intermediate: Diphenylphosphine oxide (CAS：4559-70-0) serves as a key intermediate for synthesizing various organophosphorus derivatives, including triarylphosphine oxides and alkenyldiphenylphosphine oxides, and is widely used in Wittig-Horner reaction preparation and alkyne addition reactions.
2. Catalytic Reaction Ligand: Diphenylphosphine oxide (CAS：4559-70-0) acts as an efficient ligand for multiple cross-coupling reactions, including Buchwald-Hartwig cross coupling, hydrophosphonylation and Suzuki-Miyaura coupling reactions, improving catalytic efficiency and reaction selectivity in organic catalytic systems.
3. Pharmaceutical and Agrochemical Intermediate: Diphenylphosphine oxide (CAS：4559-70-0) is applied in the synthesis of high-value pharmaceutical and agrochemical products, providing stable phosphorus-containing structural units for fine pharmaceutical chemical synthesis and pesticide intermediate preparation.
4. Polymer Flame Retardant Modifier: Diphenylphosphine oxide (CAS：4559-70-0) is used as a halogen-free reactive flame retardant intermediate for polymer materials, modifying the thermal stability and flame retardant performance of plastics and electronic polymer materials, meeting environmental protection flame retardant requirements.
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In order to provide an accurate quotation, buyers need to confirm the following information before quoting.
✅ Product name and CAS number
✅ Sample quantity or bulk quantity
✅ Required purity, grade or specification
✅ Usage direction
✅ Packing requirement
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We conduct strict testing on every batch after production and re-inspect before shipment to ensure compliance. A Certificate of Analysis (COA) is provided for customers before procurement. We suggest that customers request samples from us before purchasing bulk products to ensure that product meet their requirements.
If the customer receives a product that does not meet the requirements during testing, please communicate with us within 7 days and we will provide technical guidance; If it is confirmed that it is a problem with our product, we will proceed with a return or exchange.
1. What is the MOQ of this product?
We accept flexible MOQ, including small quantities for laboratory R&D and large volumes for industrial production.
2. What is the delivery time?
Normally 3–7 working days after payment confirmation, depending on stock and order quantity.
3. Can I request a sample of Diphenylphosphine oxide (CAS：4559-70-0) for testing before placing a bulk order?
Yes, we support quality evaluation by providing samples for laboratory testing. We understand the importance of verification in chemical sourcing; please contact our team to arrange a sample shipment.
4. How to guarantee product quality and handle quality issues?
Strict quality inspection is conducted before delivery, and each batch is equipped with a COA. If quality defects are found within 7 days after receipt, goods can be returned or exchanged after failing third-party testing to protect your interests.
5. Are technical documents available?
COA, TDS, and SDS can be provided to support product evaluation and industrial use.
6. What are the usage precautions for Diphenylphosphine oxide (CAS：4559-70-0)?
This product is an irritant fine chemical. Avoid direct contact with skin, eyes and respiratory tract during operation, wear professional protective gloves and goggles. Use in a well-ventilated laboratory or production environment, keep away from heat and strong oxidants, and seal the container tightly after use to prevent moisture absorption and deterioration.
