1,4-Diphosphinobutane, also known as 1,4-bis(diphenylphosphino)butane or dppb, is a bidentate phosphine ligand widely used in homogeneous catalysis. It features a butane chain with two diphenylphosphino groups attached at the 1 and 4 positions, providing a flexible and sterically accessible structure. This ligand is known for its ability to stabilize metal complexes and enhance catalytic activity in various reactions, such as hydrogenation, hydroformylation, and cross-coupling. Its electronic properties and steric bulk make it a versatile choice for fine-tuning the selectivity and reactivity of catalytic systems.

5518-64-9

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Basic information
1. Product Name: 1,4-diphosphinobutane
2. Synonyms:
3. CAS NO:5518-64-9
4. Molecular Formula:
5. Molecular Weight: 122.087
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 1,4-diphosphinobutane(CAS DataBase Reference)
10. NIST Chemistry Reference: 1,4-diphosphinobutane(5518-64-9)
11. EPA Substance Registry System: 1,4-diphosphinobutane(5518-64-9)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 5518-64-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 5518-64-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,1 and 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5518-64:
(6*5)+(5*5)+(4*1)+(3*8)+(2*6)+(1*4)=99
99 % 10 = 9
So 5518-64-9 is a valid CAS Registry Number.

5518-64-9Upstream product

5518-64-9Downstream Products

28240-71-3 1,4-Butandiylbis(dichlorphosphan)

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