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.
Location of Tucson on a map. Tucson is a city found in Arizona, The United States Of America. It is located 32.22 latitude and -110.93 longitude and it is situated at elevation 757 meters above sea level. Tucson has a population of 520,116 making it the 2nd biggest city in Arizona.