PRODUCT Properties
| Melting point: | −97 °C(lit.) |
| Boiling point: | 72-73 °C(lit.) |
| Density | 0.742 g/mL at 25 °C(lit.) |
| vapor pressure | 155 mm Hg ( 25 °C) |
| refractive index | n |
| Flash point: | -19 °C |
| storage temp. | Store below +30°C. |
| solubility | water: soluble1.2 g/100g at 20°C(lit.) |
| form | Powder/Solid |
| color | White |
| explosive limit | 1.23-7.7%(V) |
| Water Solubility | Miscible with alcohol, ethyl ether. Slightly miscible with water. |
| Merck | 14,3774 |
| BRN | 1731469 |
| Exposure limits | ACGIH: TWA 25 ppm |
| Stability: | Stable, but may react with air to form peroxides. Once opened, store under an inert atmosphere and test for the presence of peroxides before use. Highly flammable. Incompatible with strong oxidizing agents. |
| InChIKey | NUMQCACRALPSHD-UHFFFAOYSA-N |
Description and Uses
In the 1990s, the production of other fuel oxygenates began, with the appearance of ethyl tertiary-butyl ether, CAS RN 637- 92-3 (ETBE), first produced in France in 1992, and tertiary-amyl methyl ether, CAS RN 994-05-8 (TAME). To their number others have been added, such as diisopropyl ether, CAS RN 108-20-3 (DIPE) and, most recently, tertiary-amyl ethyl ether, CAS RN 919-94-8 (TAEE), which is being produced in Germany; however, the use of these oxygenates is currently small scale. Alcohols, such as ethanol, CAS RN 64-17-5 (EtOH) and methanol, may also be used as fuel oxygenates, but methanol is not used as such, although it is used in China as a liquid fuel for passenger cars and for synthesis of dimethyl ether as an alternative to diesel fuel for trucks and buses. Ethers have the advantage over alcohols in currently designed engines because alcohols in petrol tend to make the blend very volatile and water soluble, possibly creating problems in the fueldistribution system and vehicle engine. Perhaps the larger-scale use of ethanol in fuel oxygenation is in the production of ETBE or coblending with ETBE.
In 2006, because of litigation and liability fears, the blending (but not the production) of MTBE into petrol in the United States was discontinued, whereas the European Union (EU) has continued its use of ethers in blending. Other global producers and consumers of fuel ether oxygenates are the Middle East, South America (excluding Brazil), Mexico, and a large portion of Asia. The current global production capacity is estimated to be approximately 18 Mton year1. The expected demand for MTBE t ETBE in Asia is 11.9 Mton. In 2010, China was the world’s largest producer of MTBE (6.8 Mton year1), yet was also importing MTBE at 740 kton in the same year. In Japan, Bio-ETBE is the biofuel of choice for petrol. It is preferred over alcohols in Japan on the basis of emission benefits, vehicle performance, and existing regulations.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225-H336 |
| Precautionary statements | P210 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36/38-67 |
| Safety Statements | 16-26 |
| RIDADR | UN 1179 3/PG 2 |
| WGK Germany | 1 |
| RTECS | KN4730200 |
| F | 23 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29091990 |
