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Methyl tert-butyl ether (MTBE)
An octane-enhancing oxygen-containing component is used to increase the octane number of gasolines.
Oxygenated compounds are typically high octane numbers, up to 100 according to the research method.
Among them, methyl tert-butyl ether (2-methyl-2-methoxypropane, MTBE) is distinguished by good efficiency, its octane number of mixing, depending on the component composition of gasoline, can reach 135.
Oxygenated compounds are typically high octane numbers, up to 100 according to the research method.
Among them, methyl tert-butyl ether (2-methyl-2-methoxypropane, MTBE) is distinguished by good efficiency, its octane number of mixing, depending on the component composition of gasoline, can reach 135.
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When using MTBE, the addition of a homogenizer is not required in order to avoid the separation of the aqueous phase, because MTBE dissolves exclusively in gasoline.
The addition of methyl tert-butyl ether gives the most complete combustion of motor fuel without the formation of solid carbon deposits on the cylinder walls of the internal combustion engine. The process of gasoline production using MTBE is extremely simple - mechanical mixing of low-octane gasoline and additives.
The disadvantage of MTBE is the need to enter significant amounts of it to achieve the required octane number of gasoline (10-15%).
The disadvantage of MTBE is the need to enter significant amounts of it to achieve the required octane number of gasoline (10-15%).
| Parameter | Top grade | I grade | Test method |
|---|---|---|---|
| Appearance | Transparent, colorless liquid, not containing mechanical impurities | Transparent, colorless liquid, not containing mechanical impurities | GOST R 58282-2018 |
| Mass fraction of MTBE, %, not less | 98 | 96 | GOST R 58282-2018 |
| Mass fraction of alcohols (methanol and tert-butanol), %, no more | 1.5 | 2.5 | GOST R 58282-2018 |
| Including mass fraction of methanol, %, no more | 1.0 | 1.0 | GOST R 58282-2018 |
| Mass fraction of hydrocarbons С₄ and С₈, %, no more | 1.5 | 1.5 | GOST R 58282-2018 |
| Mass fraction of water, %, no more | 0.1 | 0.1 | GOST 14870, GOST 24614 or GOST R 56340 |
| Mechanical impurities | Absence | Absence | GOST R 58282-2018, GOST 6370 |
| Color, Hazen units, no more | 70 | 70 | GOST R 58282-2018 |
MTBE - methyl tert-butyl ether - GOST R 58282-2018
Appearance: Colorless transparent liquid with aromatic odor
Chemical formula: CH3 — O — C (CH3) 3
Synonym: tert-butyl methyl ether, 2-methyl-2-methoxypropane
International name: methyl tert-butyl ether
CAS: 1634-04-4
UN: 2398
EINECS: 216-653-1
UN classification: UN hazard class: 3; UN packing group: II
Main substance content: Extra grade - not less than 98%, first grade - 96%, second grade - 94%
Solubility: completely miscible with gasoline
Shelf life: 1 year
Storage: In the premises for storing and using MTBE, it is prohibited to handle with open fire; electrical equipment, electrical networks and artificial lighting must be explosion-proof.
ATTENTION! Use ventilation, local exhaust, or respiratory protection. Protective gloves. Use safety glasses or a face mask.
Chemical formula: CH3 — O — C (CH3) 3
Synonym: tert-butyl methyl ether, 2-methyl-2-methoxypropane
International name: methyl tert-butyl ether
CAS: 1634-04-4
UN: 2398
EINECS: 216-653-1
UN classification: UN hazard class: 3; UN packing group: II
Main substance content: Extra grade - not less than 98%, first grade - 96%, second grade - 94%
Solubility: completely miscible with gasoline
Shelf life: 1 year
Storage: In the premises for storing and using MTBE, it is prohibited to handle with open fire; electrical equipment, electrical networks and artificial lighting must be explosion-proof.
ATTENTION! Use ventilation, local exhaust, or respiratory protection. Protective gloves. Use safety glasses or a face mask.