Ethyl benzene flash point

Compounds with low flash points (below room temperature). Examples are acetaldehyde, acetone, acetonitrile, benzene, carbon disulfide, cyclohexane, diethyl ether, ethyl acetate and -hexane. 

A flammable chemical substance is a solid, liquid, vapor, or gas that ignites easily and burns rapidly in air. Many of the flammable chemicals used in laboratories are flammable liquids and organic solvents. The vapors of these chemical substances form ignitable mixtures with air. Based on the flash points of these chemicals, classifications are made. The flash point of a chemical substance is defined as the lowest temperature at which a fuel-air mixture present above the surface of a liquid will ignite, if an ignition source is present. The common flammable chemical substances include, but are not restricted to, acetone, benzene, cyclohexane, ethanol, ethyl acetate, ethyl ether, gasoline, hexane, isopropyl alcohol, methanol, propanol, tetrahydro-furan and toluene, and xylene. 

Includes ethyl benzene and isomers of xylene. Melting point, flash point, and azeotropic characteristics will vary slightly with composition. Sources ... 

PROPENYLOXY)BENZENE (1746-13-0) CsHijO Combustible liquid (flash point 143°F/62°C). May form peroxides on contact with air. Violent reaction may occur with strong oxidizers, strong acids acetyl peroxide boron trifluoride aluminum hydride (possible explosion). Incompatible with nitrosyl perchlorate, ozone (may form explosive ethyl peroxide, aldehyde and acetic acid). On small fires, use dry chemical powder (such as Purple-K-Powder), foam, or CO2 extinguishers. 

Flash pt 125°C (275°F). Miscible with water, methanol, alcohol, acetone, and ethyl acetate. Soluble in ether (25°C) 11% w/w. Limited solubility in benzene, trichloroethylene, methylene chloride, petrol ether, and heptane. LD50 orally in rats 5.89g/kg (Smyth). Melting point mp — 18°C Boiling point bp76o 239°C bp3.o 120°C. Flash point Flash pt 125°C (275°F). Index of refraction 1.4499. 

Table 10.5 lists the physical properties of the aromatic-type pyridine and the three isomeric methyl derivatives (picolines) as well as the 2-ethyl and 4-ethyl pyridine derivatives. Complete hydrogenation of the pyridine ring yields the cyclic secondary amine, piperidine, which is also listed in Table 10.5. The pyridine derivatives are medium boiling liquids with flash points in the range of 37-134°F. The substitution of a nitrogen atom for a carbon atom in the benzene ring gives the pyridine derivative with much higher Hansen polarity and hydrogen bonding values (5 = 8.8 and 5 , = 5.9) than the benzene molecule (6 = 0 and 6 = 2.0).

Again, there is no hard line between what is safe and what is not, but solvents with flash point of less than -18°C are not used. A solvent with a flash point above -18°C can be used but special precautions must be taken such as grounding of all drums and reactors to prevent buildup of electrostatic electricity and excluding all other sources of ignition. All other solvents (toxic or flash point <-18°C) must be replaced. For example, chlorinated solvents (chloroform, carbon tetrachloride), which are carcinogenic, can be replaced with ethyl acetate. Solvents such as pentane (flammable) or hexane (forms electrostatic charges) are replaced with heptanes. Benzene (a carcinogen) is replaced with toluene or xylene. Diethyl ether is replaced with t-butyl methyl ether and dioxane with tetrahydrofiiran. 

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