Methyl tert-Butyl Ether (MTBE), also called tert-butyl methyl ether, is an ether identified by CAS 1634-04-4. It may be evaluated as a fuel oxygenate when the intended use, destination and current product-specific specification are stated. For an RFQ, state the intended use, destination, required specification, quantity, packaging and document needs.
Methyl tert-Butyl Ether (MTBE) CAS 1634-04-4
- CAS: 1634-04-4
- Synonyms: Methyl tert-Butyl Ether; tert-Butyl Methyl Ether; MTBE; 2-Methoxy-2-methylpropane
- Einecs: 216-653-1
- Molecular Formula: C₅H₁₂O
- Grade: State the required product-specific specification for the intended process.
- Package: State packaging and handling requirements for the product and destination.
Product Description
Methyl tert-Butyl Ether (MTBE), also called tert-butyl methyl ether, is an ether identified by CAS 1634-04-4.
Molecular formula: C₅H₁₂O.
Molar mass: 88.15 g/mol.
CAS Number: 1634-04-4.
EINECS: 216-653-1.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Safety review: assess handling, storage and process controls against the applicable SDS and current product-specific specification.
Safety review: assess handling, storage and process controls against the applicable SDS and current product-specific specification.
Safety review: assess handling, storage and process controls against the applicable SDS and current product-specific specification.
Physical-property requirements: confirm them against the current product-specific specification and applicable SDS.
Technical review
MTBE and Methyl tert-Butyl Ether are names for the same CAS 1634-04-4 ether.
Industrial process context
It may be evaluated as a fuel oxygenate when the intended use, destination and current product-specific specification are stated.
Safety review
Safety review: assess handling, storage and process controls against the applicable SDS and current product-specific specification.
FAQ - Technical & Supply Chain
-
Q:
Are MTBE, Methyl tert-Butyl Ether and tert-Butyl Methyl Ether the same product?
A: Yes. These names identify CAS 1634-04-4, but fuel-blending and high-purity solvent offers can use different specifications. State the intended use, required standard and whether gasoline-grade or higher-purity MTBE is needed before comparing price or batch analysis. -
Q:
Which specifications matter when purchasing MTBE?
A: Confirm MTBE assay, methanol, tert-Butyl Alcohol, water, sulfur, color, density, solvent-washed gum and vapor-pressure or distillation requirements where applicable. Fuel and chemical grades are not defined by purity alone, so align the quotation, method and batch analysis. -
Q:
Is fuel-grade MTBE interchangeable with solvent-grade MTBE?
A: Not without checking the specification. Fuel-grade MTBE may contain additives or meet oxygenate requirements that are not relevant to laboratory or process use, while solvent applications may require tighter water, nonvolatile residue or stabilizer controls. The application should be stated before grade selection. -
Q:
What are the key physical and transport properties of MTBE?
A: MTBE is a colorless, highly flammable liquid with boiling point about 55-56 C, melting point about -110 C, density about 0.74 g/cm3 and flash point around -28 to -33 C. It is shipped under UN 2398, Class 3 flammable liquid, packing group II. -
Q:
How should MTBE be stored and handled, and what solvent risk should be checked?
A: Store in a cool, well-ventilated area in grounded, tightly closed containers away from heat, sparks, open flames and strong oxidizers. Use vapor controls and static-safe transfer, and for solvent applications check peroxide or gum formation as material ages.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
Send the CAS number, grade, quantity, packing preference and destination.
Sample & Supply
Support is available for samples, trial orders, bulk and repeat supply.
Storage & Shipping
Product-specific conditions are confirmed before order.