Methyl tert-Butyl ether
CAS 1634-04-4
EC 216-653-1
Formula C5H12O
MW 88.15 g/mol
Solvents Personal Care & Cosmetics Solvent & CarrierFlavoring & Acidulant
Description
Methyl tert-Butyl Ether (MTBE, CAS 1634-04-4) is an ether-class solvent also referenced under trade designations such as HP-MTBE and MBT-ETHER, and by the abbreviations tert-C4H9OCH3 and tert-Butoxymethane. It carries no assigned E-code and is classified under HS code 29091900 within the cyclic ether category.
In personal care and cosmetics formulation, MTBE functions as a solvent and carrier, dissolving fragrance compounds and facilitating their even dispersion within a finished product matrix. Its low polarity and moderate evaporation rate make it effective for extracting and concentrating aromatic constituents during fragrance ingredient processing.
MTBE is supplied as a liquid-phase solvent grade and is subject to REACH registration requirements for European commerce. Procurement teams should confirm supplier SDS documentation and purity specifications prior to sourcing. Packaging formats typically follow standard industrial solvent conventions, including drums and IBC containers.
In personal care and cosmetics formulation, MTBE functions as a solvent and carrier, dissolving fragrance compounds and facilitating their even dispersion within a finished product matrix. Its low polarity and moderate evaporation rate make it effective for extracting and concentrating aromatic constituents during fragrance ingredient processing.
MTBE is supplied as a liquid-phase solvent grade and is subject to REACH registration requirements for European commerce. Procurement teams should confirm supplier SDS documentation and purity specifications prior to sourcing. Packaging formats typically follow standard industrial solvent conventions, including drums and IBC containers.
Physical Properties
| Melting Point | -108.6 °C |
| Boiling Point | 55.2 °C |
| Density | 0.7405 g/cm³ @ Temp: 20 °C |
| Flash Point | -27 °F |
| Appearance | Methyl-tert-butyl ether is a colorless liquid. |
| Color | APHA: ≤10 |
| Odor | Characteristic ethereal odor |
| Form | Powder or Needles |
| Water Solubility | 51 g/L (20 ºC) |
| Vapor Pressure | 4.05 psi ( 20 °C) |
| Refractive Index | n 20/D 1.369(lit.) |
| Log P | 1.06 at 20℃ |
Safety & Handling (Learn More)
Danger GHS02 GHS07 GHS08
H
H225H303H304H315H320H335H336H351
P
P203P210P233P240P241P242P243P261P264P271P280P318P319P321P331P405P501P264+P265P301+P316P301+P317P302+P352P304+P340P332+P317P337+P317P362+P364P370+P378P403+P233P403+P235P303+P361+P353P305+P351+P338
Trade & Regulatory
| HS Code | 29091900 |
| UN Number | 2398 |
| ADR Class | 3 |
| Packing Group | II |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 3 |
Other Names
2-methoxy-2-methylpropanetert-C4H9OCH3t-Butyl methyl ethertert-butyl methyl etherMTBEHP-MTBEMBT-ETHERBOC-ARG(MTR)-OH
Related Products
Need a chemical? Get a quote within 24 hours.