Bamberger, Ber., 1893.26, p. 49 6); by the oxidation of nitrosobenzene (below) with atmospheric oxygen; or by the decomposition of benzene diazonium nitrate mercury nitrite, Hg(NO 2) 2.2C 6 H 5 N 2 NO 3, with copper powder (A.
Too much force (anything over 140/90 mm Hg is considered "high") can cause damage to the artery walls.
The compression level of such footwear is measured in mmHg, or millimeters of mercury, with the letters Hg being the chemical symbol for mercury.
Another diagnostic clue is a significant difference (greater than 30 mm Hg) in the blood pressure on the right and left sides of the body.
Blood pressure is measured in millimeters of mercury (mm Hg).