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.
It is based on the mean foot length and width for which the shoe is suitable, measured in millimetres. A shoe size of 280/110 indicates a mean foot length of 280 millimetres (11 in) and width of 110 millimetres (4.3 in). Because Mondopoint also takes the foot width into account, it allows for better fitting than most other systems.