Compounds of the formula: R.sup.1R.sup.2N--CH.sub.2--CHO[(AO).sub.m1R.sup.4]--CH.sub.2--OR.sup.3 where R.sup.1 is alkoxylated polyhydroxy hydrocarbyl; R.sup.2 is as defined for R.sup.1, or hydrocarbyl, particularly alkyl or alkoxyalkyl, alkoxylated hydroxyalkyl, or a group: --CH.sub.2--CHO[(AO).sub.mlR.sup.4]--CH.sub.2--OR.sup.3; R.sup.3 is hydrocarbyl; AO is alkyleneoxy; ml is from 0 to 50; such that the average total number of alkyleneoxy groups in the molecule is from 3 to 50; and R.sup.4 is hydrogen, or alkyl, are useful as agrochemical adjuvants. The agrochemical can be a plant growth regulator, herbicide, and/or pesticide, for example insecticide, fungicide, acaricide, nematocide, miticide, rodenticide, bactericide, molluscicide and/or bird repellent. Particularly useful formulations include water soluble herbicide(s), particularly such as glyphosate, glufosinate and paraquat.