Many of the Zoos have them, but often they are only with a few of the animals. The Zoo has done alot of updating their site and park trying to compete with some of the larger Zoos. From what I could find out this Zoo also claims to be the oldest formal Zoo in the US.
What this means is that toluene will ignite with a lower amount of vapour in the air. So the upshot is that Hexane is more flammable but requires slightly more vapour in the air to ignite than does toluene. Edited to correct the flash point as the MSDS I looked for hexane quoted in Fahrenheit not Celsius. I have now converted the data.
n-Hexane: A chemical made from crude oil that is mixed with solvents for a number of uses. Inhaling n-hexane causes nerve damage and paralysis of the arms and legs. Some people abuse products containing n-hexane by inhaling it to get high..Most of the n-hexane used in industry is mixed with similar chemicals called solvents. The major use for solvents containing n-hexane is to extract vegetable oils from crops such as soybeans.These solvents are also used as cleaning agents in the printing, textile, furniture, and shoemaking industries.nhaling n-hexane causes nerve damage and paralysis of the arms and legs. Some people abuse products containing n-hexane by inhaling it to get high.. Most of the n-hexane used in industry is mixed with similar chemicals called solvents.