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Methyl tert-butyl ether

CAS Number
1634-04-4
EC Number
216-653-1
Chemical Formula
C5H12O
Molecular Weight
88.15 g/mol

Description

Methyl tert-butyl ether (CAS 1634-04-4 ), commonly known as MTBE, is an ether-based solvent used across chemical processing and specialty formulation industries. It offers fast evaporation and strong solvency for a range of organic compounds. This material is a practical choice where clean solvent recovery is a priority. In personal care and cosmetics manufacturing, it functions as a process solvent for extracting and purifying fragrance ingredients and active compounds. Its low residue profile suits applications where solvent carryover into finished formulations must be minimized. In laboratory and analytical settings, it is a standard extraction solvent for isolating non-polar compounds from aqueous matrices. Flavor and fragrance producers also use it as a carrier solvent during intermediate synthesis steps. In these environments, controlled evaporation aids in precise concentration management during the production cycle. The product is supplied as a liquid in bulk quantities, intermediate bulk containers (IBCs), and drums. Technical grade is the most common commercial specification for industrial use and large-scale processing. High-purity grades are available for analytical and specialty synthesis applications. Buyers should confirm purity thresholds and peroxide content specifications when sourcing for sensitive extraction or formulation processes. Contact us for supply of Methyl tert-butyl ether Request Quote

Other Names (Synonyms)

tert-C4H9OCH3 | t-Butyl methyl ether | Methyl tertiary-butyl ether | Methyl 1,1-dimethylethyl ether | 2-Methyl-2-methoxypropane | 2-Methoxy-2-methylpropane | MTBE | Methyl t-butyl ether

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point-108.6 °C
Boiling Point55.2 °C
Density0.7405 g/cm³ @ Temp: 20 °C
Flash Point-27 °F
AppearanceMethyl-tert-butyl ether is a colorless liquid.
ColorAPHA: ≤10
OdorCharacteristic ethereal odor
FormPowder or Needles
Water Solubility51 g/L (20 ºC)
Vapor Pressure4.05 psi ( 20 °C)
Refractive Indexn 20/D 1.369(lit.)
Log P1.06 at 20℃

Safety & Handling

Danger
GHS02· FlammableGHS07· IrritantGHS08· Health Hazard

Hazard Statements

H225Highly Flammable liquid and vapor
H303May be harmful if swallowed
H304May be fatal if swallowed and enters airways
H315Causes skin irritation
H320Causes eye irritation
H335May cause respiratory irritation
H336May cause drowsiness or dizziness
H351Suspected of causing cancer

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233Keep container tightly closed.
P240Ground and bond container and receiving equipment.
P241Use explosion-proof equipment.
P242Use non-sparking tools.
P243Take action to prevent static discharges.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P331Do NOT induce vomiting.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P378Use … for extinction.
P233Store in a well-ventilated place. Keep container tightly closed.
P235Store in a well-ventilated place. Keep cool.
P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29091900
UN Number2398
ADR Class3
Packing GroupII
Storage Class3 - Flammable liquids
WGK (Germany)3