miscible

That can be mixed in all proportions. Used of liquids.

[Medieval Latin miscibilis, from Latin miscēre, to mix.]

(MIS-uh-buhl)
adjective

Capable of being mixed together.

[From Latin miscere (to mix), ultimately from the Indo-European root meik- (to mix) that's also the source of mix, miscellaneous, meddle, medley, promiscuous, melee, and mustang.]

Usage:

"'With old homes, some of the lead actually becomes dissolved in the hot water,' said Rahming. 'So it is advisable that hot water not be used from the sink for cooking or drinking. Even the cold side should be run for at least two minutes during the day so that any miscible lead can be washed out of the system before ingestion.'" — John H. Manor; Get the Lead Out!; Michigan Chronicle; Feb 7, 1996.

May be blended or combined; mixable.

Susceptible to being mixed.