Disclosed is a hemolytic reagent comprising a nonionic surfactant represented by formula (I) below:
R.sub.1R.sub.2(CH.sub.2CH.sub.2O).sub.nH(I) where R.sub.1 represents an alkyl group, an alkenyl group, or an alkynyl group having 8 or more and 25 or less carbon atoms, R.sub.2 represents an oxygen atom, (COO) or a group represented by formula (II) below: ##STR00001## where n is 23 or larger and 25 or smaller, or 30, with n of 23 or larger and 25 or smaller, a concentration of the nonionic surfactant is 1700 ppm or higher and 2300 ppm or lower, and with n of 30, the concentration of the nonionic surfactant is 1900 ppm or higher and 2300 ppm or lower.

Disclosed is a hemolytic reagent comprising a nonionic surfactant represented by formula (I) below:
R.sub.1R.sub.2(CH.sub.2CH.sub.2O).sub.nH(I) where R.sub.1 represents an alkyl group, an alkenyl group, or an alkynyl group having 8 or more and 25 or less carbon atoms, R.sub.2 represents an oxygen atom, (COO) or a group represented by formula (II) below: ##STR00001## where n is 23 or larger and 25 or smaller, or 30, with n of 23 or larger and 25 or smaller, a concentration of the nonionic surfactant is 1700 ppm or higher and 2300 ppm or lower, and with n of 30, the concentration of the nonionic surfactant is 1900 ppm or higher and 2300 ppm or lower.

A process for producing an ether including treating (a) an ester with (b) hydrogen in the presence of (c) a heterogeneous catalyst to reduce the ester by hydrogenation to form an ether product, wherein the heterogeneous catalyst comprises platinum and ruthenium deposited on a zeolite support.

A process for producing an ether including treating (a) an ester with (b) hydrogen in the presence of (c) a heterogeneous catalyst to reduce the ester by hydrogenation to form an ether product, wherein the heterogeneous catalyst comprises platinum and ruthenium deposited on a zeolite support.