| 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 |
| 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
