Formic acid contains 53 g L â1 hydrogen at room temperature and atmospheric pressure. By weight, pure formic acid stores 4.3 wt% hydrogen. Pure formic acid is a liquid with a flash point 69 Â°C (cf. gasoline â40 Â°C, ethanol 13 Â°C). 85% formic acid is not flammable.
Tombstone is located in Cochise County of southeast Arizona, 70 miles southeast of Tucson, 20 miles east of the San Pedro River and 15 miles southwest of the Dragoon Mountains.
Jerome is located in Yavapai County, on the slopes of Cleopatra Hill. Post office opened on September 10, 1883 and is still in use. Once in time Jerome was fifth biggest town in Arizona, but now is reduced to capitol of the ghost towns.