Abstract: The invention relates to a heat transfer medium composition excellent in dispersion stability of metal and/or metal oxide particles and high in thermal conductivity, characterized by comprising water and/or alcohol as the main component, and (a) one kind or two or more kinds selected from metal and/or metal oxide particles having an average particle diameter of from 0.001 to 0.1 ?m, (b) one kind or two or more kinds selected from polycarboxylic acids and/or salts thereof, and (c) at least one kind of a metal corrosion inhibitor.

Abstract: This invention provides a novel chromanol glycoside which is a water soluble antioxidant excellent in heat and pH stability and production method thereof. It is a chromanol glycoside represented by the general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 independently are a hydrogen atom or a lower alkyl group, R.sup.5 is a hydrogen atom, a lower alkyl group, or a lower acyl group, X is a monosaccharide residue or an oligosacoharide residue, providing the hydrogen atom of the hydroxyl group of saccharide residue may be substituted by a lower alkyl group or a lower acyl group, n is an integer in the range of 0 to 4, and m is an integer in the range of 1 to 6.

Abstract: This invention provides a novel chromanol glycoside which is a water soluble antioxidant excellent in heat and pH stability and production method thereof. It is a chromanol glycoside represented by the general formula (1): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 independently are a hydrogen atom or a lower alkyl group, R.sup.5 is a hydrogen atom, a lower alkyl group, or a lower acyl group, X is a monosaccharide residue or an oligosaccharide residue, providing the hydrogen atom of the hydroxyl group of saccharide residue may be substituted by a lower alkyl group or a lower acyl group, n is an integer in the range of 0 to 4, and m is an integer in the range of 1 to 6.