A3157812
2,3-Dimethylbutane , StandardforGC,>99.5%(GC) , 79-29-8
Synonym(s):
Diisopropyl
CAS NO.：79-29-8
Empirical Formula: C6H14
Molecular Weight: 86.18
MDL number: MFCD00008925
EINECS: 201-193-6
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -129 °C |
| Boiling point: | 58 °C(lit.) |
| Density | 0.662 g/mL at 25 °C(lit.) |
| vapor density | 3 (vs air) |
| vapor pressure | 7.41 psi ( 37.7 °C) |
| refractive index | n |
| Flash point: | −28 °F |
| storage temp. | Flammables area |
| solubility | In methanol: 495, 593, 760, and 1,700 g/L at 5, 10, 15, and 20 °C, respectively. Miscible at higher
temperatures (Kiser et al., 1961). |
| pka | >14 (Schwarzenbach et al., 1993) |
| form | Liquid |
| color | Colorless |
| explosive limit | ~7.7% |
| Odor Threshold | 0.42ppm |
| Water Solubility | Soluble in water (1mg/ml @22°C), DMSO, ethanol, acetone. |
| BRN | 1730737 |
| Henry's Law Constant | 1.28(atm?m3/mol) at 25 °C (Mackay and Shiu, 1981) |
| Exposure limits | ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and
1,000 ppm, respectively (adopted). |
| Dielectric constant | 1.8899999999999999 |
| Stability: | Stable. Flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, oxygen. |
| InChIKey | ZFFMLCVRJBZUDZ-UHFFFAOYSA-N |
| LogP | 3.42 |
| CAS DataBase Reference | 79-29-8(CAS DataBase Reference) |
| EPA Substance Registry System | 2,3-Dimethylbutane (79-29-8) |
Description and Uses
2,3-Dimethylbutane is a colorless liquid.Molecular weight= 86.20; Boiling point = 58℃; Flashpoint= 229℃; Autoignition temperature= 405℃.Explosive limits: LEL = 1.2%; UEL= 7.0%. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 3, Reactivity 0. Insoluble in water
2,3-Dimethylbutane is used in high octane fuels and in organic synthesis. It is also used as a gas chromatography standard.
Safety
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H225-H304-H315-H336-H411 |
| Precautionary statements | P210-P233-P273-P301+P310-P303+P361+P353-P331 |
| Hazard Codes | F,Xn,N |
| Risk Statements | 11-65-67-51/53-38 |
| Safety Statements | 16-23-33-62-61-29-9 |
| OEB | A |
| OEL | TWA: 100.0 ppm; 350.0 mg/m3, STEL: 510.0 ppm; 1800.0 mg/m3 |
| RIDADR | UN 2457 3/PG 2 |
| WGK Germany | 3 |
| RTECS | EJ9350000 |
| Autoignition Temperature | 788 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29011000 |
| Hazardous Substances Data | 79-29-8(Hazardous Substances Data) |
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
