METHYL ETHYL CELLULOSE C??? ??, ??, ??

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? (1) ?? : ? ??? ?????? ?? ??? ?, ? ?? 4.0ppm ????? ??.

??(2) ? : ? ?? 5.0g? ??? ??????? ?? ?????????????? ?? ??? ?, ? ?? 2.0ppm ????? ??.

??(3) ??? : ? ?? 5.0g? ??? ??????? ?? ?????????????? ?? ??? ?, ? ?? 1.0ppm ????? ??.

??(4) ?? : ? ??? ?????? ?? ??? ?, ? ?? 1.0ppm ????? ??.

????

? (1) ? ??? ???(0.1→100)? ??? ??? ???? ???.

??(2) ? ?? ???(0.5→100) 5mL? 5%? ????? ?? ?? ?????? 5mL? ???, ??? ??? ???.

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? ? ?? ? ?? ? 65mg? ??? ?? ???(5mL ???? ???)? ?? ???? 65mg, ?????? 2.0mL ? ??????(??? ??? ?) 2.0mL? ?? ??? ?? ? ??? ??? ??. ???? 30?? ??? ?? ???? ???? 150℃, 20?? ??? ?? ????? ??? ?? ?? 40?? ????. 45?? ?? ?? ? ??? ??? ?? ??? 10mg ??? ?? ??? ????? ??. ?? ???? 65mg, ?????? 2.0mL, ??????? 2.0mL? ???? ??? ??? ?? ? ??? ??? ?? ?????? 15μL? ?? ??? ??? ?? ?? ???? ?????? 45μL? ?? ??? ??? ??. ???? 30?? ??? ?? ?? ??? ?????? ??. ????? ???? 1μL? ?? ?????????? ???? ???? ?? ????? ????? ??(%)? ???.

W_Sa : ???? ?? ??????? ?(mg)

W_Sb : ???? ?? ??????? ?(mg)

Q_Sa, Q_Sb : ???? ? ??????? ????? ?? ?????? ? ??????? ?????

Q_Ta, Q_Tb : ???? ? ??????? ????? ?? ?????? ? ??????? ?????

????????

???????????? ? : ?????????? ???(Chromosorb WHP ?? ?? ??? ?)? 10% ???????? ?? ? ?? ?? ??? ?

???????? ?? ? : ???????(TCD) ?? ?????????(FID)

??????????? : 200℃

????? ???? : 50℃

??????????? : 200℃

??????????? : ?? ?? ??

????? ?????? : ??? 0.25g? ??? ??? ο-????? 50mL? ??.

?????

? ? ??? ?????? ? ?? 0.6% ????? ??.

??? ??

White to pale-cream-colored fibroussolid or powder; practically odorless. Dispersesin cold water to form aqueous solutions whichundergo a reversible transformation from solutionto gel upon heating and cooling, respectively. Com-bustible.

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Methyl Ethyl Cellulose is an aerating, emulsifying, and foaming agent. the methoxy content should be not less than 3.5% and not more than 6.5%, and the ethoxy content should be not less than 14.5% and not more than 19%, both measured on the dry sample.

??

The methyl ether ofethylcellulose in which both methyl and ethylgroups are attached to anhydroglucose units byether linkages.

Safety Profile

When heated to decomposition it emits acrid smoke and irritating fumes.

METHYL ETHYL CELLULOSE ?? ?? ? ???

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METHYL ETHYL CELLULOSE ?? ??

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METHYL ETHYL CELLULOSE ?? ??: