Oxygen clathrate hydrate and oxygen solution containing the same

An oxygen solution, comprising an oxygen clathrate hydrate comprising dissolved oxygen that is maintained in a state of being dissolved in a solution when heated to 100° C. under ambient pressure, wherein the amount of the dissolved oxygen is 50 ppm or more, and

• wherein the amount of dissolved oxygen is determined by difference (P1−P2) between a numerical value P1 of an amount of dissolved oxygen (ppm) measured by a dissolved oxygen measurement method comprising the steps of:
• (1) adding a deoxidizing amino compound to an oxygen solution, and heating the resultant mixture at a temperature of 80° C. or more;
• (2) measuring a concentration of the deoxidizing amino compound contained in the oxygen solution after the step (1);
• and
• (3) calculating an amount of dissolved oxygen contained in the oxygen solution before passing through the step (1) from the concentration of the deoxidizing amino compound measured in the step (2), and
• a numerical value P2 of an amount of dissolved oxygen (ppm) of an oxygen solution measured by a dissolved oxygen measurement method of any one of a diaphragm process, a fluorescence method, and a Winkler method.