China (Mainland)
high quality (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl with best price CAS NO.76189-55-4
- FOB Price: USD: 1.00-2.00 /Metric Ton Get Latest Price
- Min.Order: 10 Gram
- Payment Terms: L/C,T/T,Other
- Available Specifications:
EP/BP/USP(1-10)Metric TonEP/BP/USP(11-100)Metric Ton
- Product Details
Keywords
- (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
- high purity (R)-(+)-2,2'-Bis(diphenylphosphino)-1,1'-binaphthyl
- high quality cas 76189-55-4
Quick Details
- ProName: high quality (R)-(+)-2,2'-Bis(diphenyl...
- CasNo: 76189-55-4
- Molecular Formula: C44H32P2
- Appearance: white to light yellow crystal powder
- Application: This product can be used as catalyst i...
- DeliveryTime: within in 5-7 working days after recei...
- PackAge: 25kg/paper drum or basis user request
- Port: Wuhan, Shanghai, Guangzhou, Tianjin po...
- ProductionCapacity: 200 Kilogram/Month
- Purity: 99%
- Storage: Store in dry, dark and ventilated plac...
- Transportation: by sea/by express
- LimitNum: 10 Gram
- Moisture Content: 0.001
- Impurity: 0.001
- Grade: Industrial Grade
Superiority
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1,Best Quality: Our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other countries, and we have got very good feedback from our customers.so you can trust us. 2, Payment method: for example T/T, Westerm Union,other 3, Excellent Service: Best service and after-sales service to all clients. 1)We will ship the goods within 5days after get your payments.If you want to cancel or change order, please tell me within 24hours after you finish the payment.. 2)We will ship the goods that you order from us by DHL, UPS, TNT and EUB.We will decided to choose which courier depend on different countries.To find the best way to delivery the goods for you. 3)As usual you can get the goods with in 4-7days.If the goods were lost or not received for other reasons, please contact us immediately. 4,Fast and safe delivery: Sample Order : As usual you can get the goods within 4-7days. We can send it via HKems, HK Air Post, DHL or other methods. We have a professional and stable logistics, and we can deliver the package smoothly around 3 to 5 days. Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is 7-15days after payment. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our customers and principals. With our high-performance teamwork centers and associated production sites for custom synthesis, we ensure effective professional response and offer extensive applications-related consulting and compliance regulation services. |
Details
Description
BINAP (2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) is an organophosphorus compound. This chiral ligand is widely used in asymmetric synthesis. It consists of a pair of 2-diphenylphosphinonaphthyl groups linked at the 1 and 1´ positions. This C2-symmetric framework lacks a stereogenic atom, but has axial chirality due to restricted rotation (atropisomerism). The barrier to racemization is high due to steric hindrance, which limits rotation about the bond linking the naphthyl rings. The dihedral angle is approximately 90.
Properties
Appearance & Physical State: white to light yellow crystal powder
Melting Point: 239-242ºC
Boiling Point: 724.3ºC at 760 mmHg
Flash Point: 419ºC
Refractive Index: 235 ° (C=0.3, Toluene)
Water Solubility: insoluble
Storage Condition: Room temperature.
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