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    ASTM D5845 - 01(2016)

    Método de prueba estándar para la determinación de éter metil-terbutílico (MTBE), éter etil-terbutílico (ETBE), éter metil-teramílico (TAME), éter diisopropílico (DIPE), metanol, etanol y ter-butanol en gasolina mediante espectroscopia de infrarrojos

    Active Standard ASTM D5845 Developed by Subcommittee: D02.04.0F

    Book of Standards Volume: 05.02

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    Significance and Use

    5.1 Alcohols and ethers are added to gasoline to produce a reformulated lower emissions gasoline. Alcohols and ethers may also be added to gasoline to increase the octane number. Type and concentration of various oxygenates are specified and regulated to ensure acceptable commercial gasoline quality. Driveability, vapor pressure, phase separation, and evaporative emissions are some of the concerns associated with oxygenated fuels.

    5.2 This test method is faster, simpler, less expensive and more portable than current methods.

    5.3 This test method may be applicable for quality control in the production of gasoline.

    5.4 This test method is not suitable for testing for compliance with federal regulations.3

    5.5 False positive readings for some of the samples tested in the round robin were sometimes observed. As only extreme base gasolines were tested in the round robin, no definitive statement can be made as to the expected frequency or magnitude of false positives expected in a wider range of base gasolines.

    1. Alcance

    1.1 Este método de prueba abarca la determinación de metanol, etanol, ter-butanol, éter metil-terbutílico (MTBE), éter etil-terbutílico (ETBE), éter metil-teramílico (TAME), y éter diisopropílico (DIPE) en gasolina mediante espectroscopia de infrarrojos. El método de prueba es adecuado para la determinación de metanol de 0,1 a 6 % en masa, etanol de 0,1 a 11 % en masa, ter-butanol de 0,1 a 14 % en masa, y DIPE, MTBE, ETBE y TAME de 0,1 a 20 % en masa.

    1.2 Los valores indicados en unidades del Sistema Internacional (SI) deben considerarse como estándar. No se incluyen otras unidades de medida en este estándar.

    1.3 Este estándar no pretende abordar todas las inquietudes de seguridad, en caso de existir alguna, relacionadas con su uso. Es responsabilidad del usuario de este estándar establecer las prácticas de salud y seguridad apropiadas y determinar la aplicabilidad de las limitaciones normativas antes de su uso.

    2. Documentos Citados