tert-AMYL METHYL ETHER

PRODUCT IDENTIFICATION
CAS NO. 994-05-8

tert-AMYL METHYL ETHER
EINECS NO. 213-611-4
FORMULA C2H5C(CH3)2OCH3
MOL WT. 102.18
H.S. CODE  

TOXICITY

 Oral rat LD50: 1602 mg/kg
SYNONYMS TAME; tert-Pentyl methyl ether; 2-methoxy-2-methyl-Butane;
2-Methyl-2-methoxybutane; Methyl 1,1-dimethylpropyl ether; Methyl tert-amyl ether; Methyl 2-methyl-2-butyl ether; tertiary-amyl methyl ether; 1,1-Dimethylpropyl methyl ether;

DERIVATION

  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear, colourless and flammable liquid with low viscosity.
MELTING POINT -80 C
BOILING POINT 85 - 87 C
SPECIFIC GRAVITY 0.764
SOLUBILITY IN WATER 12 g/l
pH

 
VAPOR DENSITY 3.52
AUTOIGNITION

 
NFPA RATINGS  

REFRACTIVE INDEX

 1.3896
FLASH POINT

-11 C
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS
TAME (tert-Amyl Methyl Ether) is a volatile, low viscosity clear liquid at room temperature with an ether odour; boiling point 86 C; melting point -80 C. TAME is flammable and can form explosive mixtures with air. It is slightly soluble in water and very soluble ethers and alcohol and in most organic solvents including hydro carbons. TAME is an ether which contains an oxygen atom bonded to two carbon atoms. In tert-Amyl Methyl Ether, one carbon atom is that of a methyl group and the other is the central atom in a tertiary amyl group. TAME may be prepared by reacting isoamylenes in a mixed C5 stream with methanol in the presence of an acidic catalyst. The most quantity produced worldwide is used as an oxygenate to gasoline. It is added both to increase octane enhancement to replace banned tetraethyl lead and to raise the oxygen content in gasoline. It is known that TAME in fuel reduces exhaust emissions of VOC (volatile organic compounds: acetaldehyde, benzene, 1,3-butadiene, ethylbenzene, formaldehyde, toluene, xylenes, and particulate organic matter) except formaldehyde. Ozone is formed by the reaction of sunlight with NOx and VOCs. With strong solvating capabilities for a wide variety of compounds, TAME is used as a reaction medium and extraction solvent to replace methylene chloride, aromatics, and other ethers. TAME is a non-chlorinated process solvent. It is used as a solvent for chromotographic techniques. The sterically hindered tertiary butyl group imparts stability. It has also an acid stability compare to other diether acetals. It is used as a paraffin-removing agent alone or in combination with other solvents.
SALES SPECIFICATION

APPEARANCE

 clear liquid

ASSAY

98.0% min

C7 ETHERS

1.0% max
AMYL ALCOHOL

0.6% max

WATERR

 0.5% max
TRANSPORTATION
PACKING

 
HAZARD CLASS  
UN NO. 1993
OTHER INFORMATION
European Hazard Symbols: , Risk Phrases: 11, Safety Phrases: 16

GENERAL DESCRIPTION OF ETHER
Ether is any of a number of organic compounds characterized by an oxygen atom joined by two carbon atoms that are part of hydrocarbon groups. The general formula is ROR', where R and R' are alkyl groups. Ethers are formed by the condensation of two alcohols. They are similar to alcohols but are generally less dense, less soluble in water, and have lower boiling points. They are relatively unreactive chemically. This unreative property makes ethers valuable as solvents. Common names of ethers simply list the alkyl groups in alphabetical order (ethyl methyl ether, IUPAC name is methoxyethane). Epoxides and crown ether are a special class of cyclic ethers. Epoxide (oxirane) is a three-membered cyclic ether in which an oxygen atom is joined to each of two carbon atoms that are already bonded to each other. Crown Ether is a macrocyclic polyether whose structure contains hydrogen, carbon and oxygen atoms. Each oxygen atoms are confined between two carbon atoms and exhibits a conformation with a hole (accordingly called "crown").