Table 1.

Initial and final water concentrations for reactions in MTBE.

	“Dry”	Sat.	0–2	2–7	7–12
water concentration of solvent [ppm]	2400[a]	13 100[b]	–	–	–
water concentration of solvent + salt pair [ppm]	–	–	4000[c]	5000[c]	8200[c]
initial water concentration of the reaction mixture [ppm]	7700[d]	13 000[d]	2000[e]	3200[e]	3600[e]
final water concentration of the reaction mixture [ppm][f]	10 300	16 300	8200	9600	12 300

^[a]Measured for a sample of anhydrous solvent from Sigma–Aldrich.

^[b]Measured for a sample of water-saturated solvent.

^[c]In a separate experiment, the salt pairs were suspended in the anhydrous solvent and the system was stirred for 1 h before measuring the water concentration.

^[d]Measured after stirring the CLEA in the solvent for 1 h.

^[e]Measured after stirring the CLEA and the salt pair in the solvent for 1 h.

^[f]Measured for the reaction mixture after 24 h.