Molekula
MTBE (Methyl Tert Butylether)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
MTBE (Methyl Tert-Butylether) is a high-octane gasoline additive and solvent used to improve fuel efficiency and reduce engine knocking. It is also employed in chemical synthesis and as a laboratory reagent. This clear, volatile liquid has a CAS number of 1634-04-4, a molecular formula of (CH3)3COCH3, and a molecular weight of 88.15 g/mol. It must be stored at ambient conditions and handled with caution, as it carries a "Danger" signal word due to its flammability and potential health hazards. Molekula supplies MTBE from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear, colourless liquid |
| Water | ≤100 mg/kg |
| Methanol | ≤0.010% |
| Ether | ≥99.900% |
| tert-Butanol | ≤0.025% |
| C8-hydrocarbons | ≤0.020% |
| arrears, DIN 53172 | ≤1.0mg/100ml |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | -28 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Liquid |
| Odour | Terpene-like odor |
| Melting Point | -108.6 °C |
| Boiling Point | 55.1 °C |
| Density | 0.7 (relative, water = 1) |
| Water Solubility | Soluble in water |
| Solubility (other solvents) | Very soluble in ethanol, ethyl ether |
| Vapour Pressure | 27 kPa at 20 °C |
| Refractive Index | 1.3664 |
| pKa | pKa = -3.70 |
| log P (octanol/water) | 0.94 |
Source: PubChem CID 15413 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90038316 |
| CAS Number | 1634-04-4 |
| IUPAC Name | 2-methoxy-2-methylpropane |
| EC Number | 216-653-1 |
| Molecular Formula | (CH3)3COCH3 |
| Molecular Weight | 88.15 |
| Exact Mass | 88.0888 |
| SMILES | CC(C)(C)OC |
| InChIKey | BZLVMXJERCGZMT-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H12O/c1-5(2,3)6-4/h1-4H3 |
| PubChem CID | 15413 |
| UN Number | UN2398 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29091918 |
| Tariff Code | 2909199090 |
Safety & GHS
-
Flammable
GHS02
-
Health Hazard
GHS07
Hazard statements
- H225 Highly flammable liquid and vapour
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H336 May cause drowsiness or dizziness
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P233 Keep container tightly closed
- P243 Take precautionary measures against static discharge
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-Methoxy-2-methylpropane
- 2-Methyl-2-methoxypropane
- Ether, tert-butyl methyl
- Methyl t-butyl ether
- Methyl tert-butyl ether
- Methyl tertiary-butyl ether
- MTBE
- Propane, 2-methoxy-2-methyl-
- T-BUTYL METHYL ETHER
- tert-Butyl methyl ether
Frequently asked questions
What is MTBE primarily used for?
MTBE is primarily used as a gasoline oxygenate and octane enhancer to improve fuel combustion efficiency and reduce vehicle emissions.
What is the chemical formula and molecular weight of MTBE?
The chemical formula is **(CH₃)₃COCH₃** and the molecular weight is **88.15 g/mol**.
What safety classification does MTBE have?
MTBE is classified with the **signal word 'Danger'** due to its flammability and potential health hazards.
How should MTBE be stored?
MTBE should be stored at **ambient temperature** in a well-ventilated area, away from ignition sources.
Can Molekula supply MTBE in bulk quantities?
Yes, Molekula can supply MTBE in **bulk** for industrial and commercial applications—please contact us for specific volume requirements.
What documentation is provided with an MTBE order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and compliance documentation for regulatory standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.