1,1'-Bi-2-naphthol BINOL CAS 602-09-5

【Chemical Name】 1,1'-Bi-2-naphthol

【Other Name】 BINOL | (±)-2,2'-Dihydroxy-1,1'-binaphthyl | (±)-1,1'-Binaphthalene-2,2'-diol | 2,2'-Dinaphthol | (±)-2,2'-Dihydroxydinaphthyl

【CAS No.】 602-09-5

【Molecular Formula】 C₂₀H₁₄O₂

【Molecular Weight】 286.32–286.33 g/mol

【Product properties】

| Property | Value |

| :--- | :--- |

| Appearance | White to light yellow crystalline powder to crystal |

| Purity (GC) | ≥99.0% |

| Purity (HPLC) | ≥98.0% – ≥99.5% (high purity grade) |

| Melting Point | 214–221°C (literature) |

| Boiling Point | N/A (decomposes) |

| Density | 1.301 g/mL |

| Solubility | Insoluble in water; soluble in THF (50 mg/mL), dioxane, methanol, ethanol; slightly soluble in toluene |

| pKa | ~8.0 (25°C) |

| Physical State (20°C) | Solid |

Structural data:

- Hydrogen Bond Donors: 2

- Hydrogen Bond Acceptors: 2

- Rotatable Bonds: 1

【Storage】

Store sealed in a cool, dark, dry place. Recommended storage temperature: Room temperature (<15°C) or 0–8°C. Air and light sensitive.

【Packing】

Available in 1g, 5g, 10g, 25g, 100g, 250g, 500g, 1kg, and bulk packaging upon request.

【Application】

- Asymmetric Synthesis: Serves as a privileged chiral ligand and auxiliary widely used in asymmetric catalysis, including alkynylation, enantioselective Diels-Alder reactions, asymmetric Michael additions, C-C and C-heteroatom bond formation. Enables the synthesis of enantiomerically pure compounds essential for pharmaceuticals and agrochemicals.

- Organic Electronics: Used as a building block in the development of organic light-emitting diodes (OLEDs) and organic solar cells, enhancing device efficiency and stability.

- Polymer Chemistry: Acts as a monomer for chiral conjugated polymers, covalent organic frameworks (COFs), and functional materials with improved thermal and mechanical properties.

- Catalysis: Functions as a ligand or precursor for chiral catalysts in various organic transformations.

- Analytical Chemistry: Employed as a reagent for the detection and quantification of metal ions.

【Product Specification】

| Item | Specification |

| :--- | :--- |

| Purity (GC) | ≥99.0% |

| Purity (HPLC) | ≥98.0% – ≥99.5% |

| Optical Purity (enantiopure grade) | ≥98.0 ee% |

| Appearance | White to light yellow powder/crystal |

| Melting Point | 214–221°C |

| Loss on Drying | ≤0.2% |

| Water Solubility | Insoluble |

| MDL Number | MFCD00004068 |

| EC Number | 210-014-0 |

| UN Number | UN2811 |

| Hazard Class | 6.1 |

| HS Code | 2907.29.9090 / 2907290090 |

| GHS Signal Word | Danger (H301 - Toxic if swallowed) |