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.
Tombstone Tourism: Best of Tombstone. Tombstone, Arizona. The very mention of Tombstone brings to mind images of the lawless Old West, gunfights at the O.K. Corral, epic feuds between the Earps and the Mclaurys and Clantons, Gold Rush fever and the promise of silver and gold.