tert-Butyl methyl ether CAS#1634-04-4

CAS Number: 1634-04-4
Chemical Formula: C5H12O
Synonyms:

Methyl tert-butyl ether, for residue analysis
Methyl-tert-bu
tert-Butyl methyl ether for HPLC, >=99.8%

Appearance: Transperant Liquid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

tert-Butyl methyl ether CAS#1634-04-4

Methyl tert-butyl ether (MTBE) is a colorless liquid with a distinctive, disagreeable odor. It is made from blending chemicals such as isobutylene and methanol, and has been used since the 1980s as an additive for unleaded gasolines to achieve more efficient burning.MTBE is also used to dissolve gallstones. Patients treated in this way have MTBE delivered directly to their gall bladders through special tubes that are surgically inserted.

tert-Butyl methyl ether Chemical Properties

Melting point	-110 °C
Boiling point	55-56 °C(lit.)
density	0.7404
vapor density	3.1 (vs air)
vapor pressure	4.05 psi ( 20 °C)
refractive index	n20/D 1.369(lit.)
Fp	-27 °F
storage temp.	Store at +2°C to +25°C.
solubility	42g/l
form	Powder or Needles
color	APHA: ≤10
Specific Gravity	0.740
Relative polarity	0.124
Odor	Characteristic ethereal odor
explosive limit	1.5-8.5%(V)
Water Solubility	51 g/L (20 ºC)
FreezingPoint	-108.6℃
λmax	λ: 210 nm Amax: 1.0 λ: 225 nm Amax: 0.50 λ: 250 nm Amax: 0.10 λ: 300-400 nm Amax: 0.005
Merck	14,6032
BRN	1730942
Exposure limits	ACGIH: TWA 50 ppm
Dielectric constant	4.5
Stability:	Stable, but may form explosive peroxides in contact with air. Extremely flammable - note low flash point. Incompatible with strong oxidizing agents.
Cosmetics Ingredients Functions	SOLVENT
InChI	1S/C5H12O/c1-5(2,3)6-4/h1-4H3
InChIKey	BZLVMXJERCGZMT-UHFFFAOYSA-N
SMILES	COC(C)(C)C
LogP	1.06 at 20℃
Surface tension	18.7mN/m at 293.15K
CAS DataBase Reference	1634-04-4(CAS DataBase Reference)
IARC	3 (Vol. 73) 1999
NIST Chemistry Reference	Propane, 2-methoxy-2-methyl-(1634-04-4)
EPA Substance Registry System	Methyl tert-butyl ether (1634-04-4)

Safety Information

Hazard Codes	Xn,F,Xi,T
Risk Statements	36/37/38-40-38-11-39/23/24/25-23/24/25
Safety Statements	9-16-24-45-36/37-7
RIDADR	UN 2398 3/PG 2
WGK Germany	3
RTECS	KN5250000
F	3-10
Autoignition Temperature	705 °F
TSCA	TSCA listed
HS Code	2909 19 90
HazardClass	3
PackingGroup	II
Storage Class	3 - Flammable liquids
Hazard Classifications	Flam. Liq. 2 Skin Irrit. 2
Hazardous Substances Data	1634-04-4(Hazardous Substances Data)
Toxicity	. LC50 in mice (15 min): 1.6 mmol/liter of atmosphere (Marsh)

Product Application of tert-Butyl methyl ether CAS#1634-04-4

Methyl tert-butyl ether (MTBE) was primarily used as a gasoline additive in unleaded gasoline in the United States prior to 2005, in the manufacture of isobutene, and as a chromatographic eluent especially in high pressure liquid chromatography. It is also a pharmaceutical agent and can be injected into the gallbladder to dissolve gallstones (ATSDR, 1996). tert-Butyl methyl ether is also used in the petrochemical industry. By reversal of its formation reaction, MTBE can be cracked to isobutene and methanol on acidic catalysts at higher temperature than MTBE synthesis.

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