A1607812
2-Butyne , >97.0%(GC) , 503-17-3
Synonym(s):
Crotonylene;Dimethylacetylene
CAS NO.：503-17-3
Empirical Formula: C4H6
Molecular Weight: 54.09
MDL number: MFCD00009275
EINECS: 207-962-2
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -32 °C |
| Boiling point: | 27 °C(lit.) |
| Density | 0.691 g/mL at 25 °C(lit.) |
| vapor pressure | 11.47 psi ( 20 °C) |
| refractive index | n |
| Flash point: | -25 °C |
| storage temp. | 2-8°C |
| form | Liquid |
| color | Clear colorless to light yellow |
| Specific Gravity | 0.691 |
| Water Solubility | Not miscible in water. |
| Thermal Conductivity | 0.12 W/(m·K) at 25 ℃ |
| BRN | 1361340 |
| Henry's Law Constant | 4.6×10-4 mol/(m3Pa) at 25℃, Yaws (2003) |
| InChI | InChI=1S/C4H6/c1-3-4-2/h1-2H3 |
| InChIKey | XNMQEEKYCVKGBD-UHFFFAOYSA-N |
| SMILES | CC#CC |
| CAS DataBase Reference | 503-17-3(CAS DataBase Reference) |
| EPA Substance Registry System | 2-Butyne (503-17-3) |
Description and Uses
2-Butyne is used to synthesize alkylated hydroquinones in the total synthesis of Vitamin E. It is also used as pharmaceutical intermediates.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H315-H319-H224 |
| Precautionary statements | P501-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P337+P313-P305+P351+P338-P362+P364-P303+P361+P353-P332+P313-P403+P235 |
| target organs | Respiratory system |
| PPE | Eyeshields, Faceshields, Gloves |
| Hazard Codes | F+,Xi |
| Risk Statements | 12-36/37/38 |
| Safety Statements | 16-26-36 |
| RIDADR | UN 1144 |
| WGK Germany | 3 |
| RTECS | GQ7210000 |
| TSCA | TSCA listed |
| HazardClass | 3 |
| PackingGroup | I |
| HS Code | 29012990 |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Eye Irrit. 2 Flam. Liq. 1 Skin Irrit. 2 STOT SE 3 |
| Limited Quantities | 0.5 L (0.1 gallon) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (300g or 300ml) |
