2,5-Dimethyl-3-hexyne-2,5-diol
2,5-dimethyl 2,5-hexynediol
CAS: 142-30-3
Molecular Formula: C8H14O2
2,5-Dimethyl-3-hexyne-2,5-diol - Names and Identifiers
2,5-Dimethyl-3-hexyne-2,5-diol - Physico-chemical Properties
| Molecular Formula | C8H14O2 |
| Molar Mass | 142.2 |
| Density | 0,949 g/cm3 |
| Melting Point | 90-94 °C (lit.) |
| Boling Point | 121-123 °C/7 mmHg (lit.) |
| Flash Point | 102°C |
| Water Solubility | 240 g/L (20 ºC) |
| Solubility | 240g/l |
| Vapor Presure | 0.025 hPa (40.3 °C) |
| Appearance | White to yellowish lens |
| Color | White to light yellow |
| BRN | 969835 |
| pKa | 12.91±0.29(Predicted) |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.4179 (estimate) |
| MDL | MFCD00004468 |
| Physical and Chemical Properties | Crystalline solid. Melting point 94-95 ℃, boiling point 205-206 ℃,121-123 ℃(0.93kPa), relative density 0.949(20/20 ℃). The solubility in water at 20 ° C is 27.0%, soluble in acetone, ethylene glycol, methyl ethyl ketone. No deliquescence. |
| Use | Used as brightener for electroplating industry and raw material of perfume, herbicide and insecticide |
2,5-Dimethyl-3-hexyne-2,5-diol - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 42/43 - May cause sensitization by inhalation and skin contact. |
| Safety Description | S7 - Keep container tightly closed. S36 - Wear suitable protective clothing. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | MR0176000 |
| TSCA | Yes |
| HS Code | 29053980 |
2,5-Dimethyl-3-hexyne-2,5-diol - Reference Information
| LogP | 0.81 at 25℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used as surfactant, polyol component of polyester in polyurethane production. It is also an intermediate for herbicides, adhesives, metal surface treatment aids, lubricants for wires, organic peroxides and defoamers. Semi-bright nickel intermediates Used as brighteners for electroplating industry and raw materials for spices, herbicides and pesticides |
| Production method | is obtained by the reaction of acetone and acetylene. The condensation reaction is carried out in solvent benzene, the reaction is carried out in the presence of potassium hydroxide at 35-40°C, and then acidified with hydrochloric acid to obtain the finished product. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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