| 143036 |
5-Hexynoic Acid is an aliphatic carboxylic acid containing a terminal alkyne group. It is commonly used as an intermediate in organic and chemical synthesis, particularly in reactions involving alkyne functionalization and carbon–carbon bond formation. The compound is valued in research and industrial settings for developing speciality chemicals and advanced molecular frameworks.
Synonym: 5-hexynoic acid, 5-hexyn-1-oic acid, 4-ethynylbutyric acid, acmc-1an4h
| Appearance | Colourless to light orange-yellow, clear liquid |
| Melting Point | ~27 °C (estimated) |
| pH of Liquid, Typical (10% soln) | Not typically specified (not a standard aqueous specification) |
| Specific Gravity Approx | ~1.03 g/mL at 20 °C |
| Odor | Characteristic organic acid/chemical odor (not usually specified) |
| Color | Colourless to yellow |
| Linear Formula | CH≡C(CH₂)₃COOH |
| IUPAC Name | hex-5-ynoic acid |
| Formula Weight | 112.13 g/mol |
| percent purity | Typically ≥ 96 % (often ~97 %) |
| Physical Form | Liquid |
| Chemical Name or Material | 5-Hexynoic acid (alkynoic acid intermediate) |
| Content / Assay Percent Range | ≥ 96 % (GC) typical specification |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Hazards not otherwise classified (HNOC) or not covered by GHS
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS). For the full text of the H-Statements mentioned in this Section, see Section 16.
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