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.
Width is also a factor-but there's so many letters! On the website there is a chart to help you sort out what markings constitute a slim, narrow, wide or extra wide shoe. Tip for Wide Widths: The more letters, the wider the shoe. Example: EEEE or 4E is wider than EEE or 3E.