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HS Code |
448958 |
| Chemical Name | 2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane |
| Molecular Formula | C8H13BO2 |
| Molecular Weight | 151.00 g/mol |
| Cas Number | 99883-96-8 |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 67-69 °C at 12 mmHg |
| Density | 0.91 g/cm³ |
| Purity | Typically ≥ 97% |
| Smiles | CC1(C)OB(B#C)OC1(C)C |
| Refractive Index | n20/D 1.430 |
| Storage Temperature | 2-8 °C (refrigerated) |
| Solubility | Soluble in organic solvents |
| Synonyms | Ethynylboronic acid pinacol ester |
| Inchi | InChI=1S/C8H13BO2/c1-5-9-10-7(2,3)8(4,11-9)6 |
As an accredited 2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | The packaging for **2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (1 gram, Sigma Aldrich)** features an amber glass vial with screw cap. |
| Shipping | 2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane is typically shipped in sealed amber glass bottles under an inert atmosphere to protect from moisture and light. Shipment complies with international chemical transport regulations, with appropriate hazardous labeling and documentation. Ensure prompt, temperature-controlled delivery as recommended by Sigma Aldrich, Merck, or TCI for chemical-grade reagents. |
| Storage | 2-Ethynyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane should be stored in a tightly sealed container, under an inert atmosphere such as nitrogen or argon, in a cool, dry, and well-ventilated area, away from sources of moisture, heat, and incompatible materials like strong oxidizers. Protect from light if recommended by the supplier. Refer to the SDS for specific storage temperature instructions. |
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