Being the product of a neutralization reaction between an acid and a base, sodium chloride is neutral, with a pH of seven. Sodium chloride is an ionic compound with the chemical formula NaCl. Continue Reading.
A D-width is considered a medium for men and a wide for women. It measures between 3 and 5 inches across the bottom of the ball of the foot, depending on your shoe size. For instance, in men's footwear, a size 10D is 4 inches across, while a size 14D is 4.5 inches across.
In the United States, shoes are sized for length and width. Nine widths are available, ranging from AAA (narrowest) to EEE (widest). For men, a D width is considered a medium; for women, a medium is a B width. For comfortable shoe-wearing, it is important to get your width right.