2,2-Dimethylbutane
- Product Name2,2-Dimethylbutane
- CAS75-83-2
- CBNumberCB7280708
-
MFC6H14
Lewis structure
- MW86.18
- EINECS200-906-8
- MDL NumberMFCD00009321
- MOL File75-83-2.mol
- MSDS FileSDS
Chemical Properties
| Melting point | −102 to −98 °C; −152 to −145 °F; 171 to 175 K |
| Boiling point | 49.7 to 49.9 °C; 121.4 to 121.7 °F; 322.8 to 323.0 K |
| Density | 649 g/L |
| vapor density | 2.97 (vs air) |
| vapor pressure | 5.35 psi ( 20 °C) |
| refractive index | 1.3688 |
| Flash point | −48 °C (−54 °F; 225 K) closed cup |
| storage temp. | Flammables area |
| solubility | In methanol: 590 and 800 g/L at 5 and 10 °C, respectively. Miscible at higher temperatures (Kiser et al., 1961). Miscible with other aliphatic hydrocarbons, e.g., pentane, hexane, heptane, etc. |
| pka | >14 (Schwarzenbach et al., 1993) |
| form | liquid |
| color | Colorless |
| Odor Threshold | 20ppm |
| explosive limit | ~7.7% |
| Water Solubility | insoluble |
| Thermal Conductivity | 0.0934 W/(m·K) at 25 ℃ |
| Specific Heat Capacity | Cp(liquid): 2.23 J/(g·K), at 25℃ |
| BRN | 1730736 |
Safety
| Symbol(GHS) |
   
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| Signal word | Danger | |||||||||
| Hazard statements | H315-H336-H304-H411-H225 | |||||||||
| Precautionary statements | P501-P273-P240-P261-P210-P233-P243-P241-P242-P271-P264-P280-P370+P378-P391-P331-P362+P364-P303+P361+P353-P332+P313-P301+P310-P304+P340+P312-P403+P233-P403+P235-P405 | |||||||||
| Hazard Codes | F,Xn,N | |||||||||
| Risk Statements | 11-38-51/53-65-67 | |||||||||
| Safety Statements | 9-16-29-33-61-62 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 100.0 ppm; 350.0 mg/m3, STEL: 510.0 ppm; 1800.0 mg/m3 | |||||||||
| RIDADR | UN 1208 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | EJ9300000 | |||||||||
| Autoignition Temperature | 797 °F | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 2901100000 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Aquatic Chronic 2 Asp. Tox. 1 Flam. Liq. 2 Skin Irrit. 2 STOT SE 3 | |||||||||
| Hazardous Substances Data | 75-83-2(Hazardous Substances Data) | |||||||||
| Toxicity | Reported as an impurity (0.2 wt %) in 99.0–99.7 wt % 2,3-dimethylbutane (Chevron Phillips, 2004). | |||||||||
| NFPA 704: |
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