Is water-soluble 2 Hexin

Hexane C.6H14 

 
Teflon closure
   
   

Clear, colorless
liquid
  
Occurrence oil
molar mass 86.175 g / mol

 
AGW 50 ml / m3 (TRGS 900)
density 0.6593 g / cm3   
Melting point −95.27 ° C
boiling point +68.72 ° C
Water solubility at 25 ° C 10 mg / l
Refractive index (20 ° C)  1,3727
Explosion limit1.1 to 7.5% by volume (air)
Flash point −22 ° C
Ignition point +225 ° C
Pictograms   
  
GHS 02
GHS 07
GHS 08
GHS 09
danger
 
Hazard classes + category   
Flammable liquids 2
Skin corrosion / irritation 2
Reproductive toxicity (F) 2
Specific target organ toxicity e. CNS 3
Specific target organ toxicity w. 2
Aspiration hazard 1
Hazardous to waters chron. 2
HP rates (see also note)       
  
H 225, 304, 315, 336, 361f, 373, 411
P 210, 261, 273, 280.1-3, 301 + 310, 331,
304+340, 403+235     
   
  
disposal G 1
Print a labelGerman designation 
Synonyms (German)
English designation 
Synonyms
CAS 110-54-3Hexane 
n-hexane
Hexanes 
n-hexanes
 
Note for schools and do-it-yourselfers: At room temperature, explosive mixtures with air can form. There is an acute danger to life if the liquid is swallowed, especially if it gets into the lungs, as breathing is blocked. When working with hexane or gasoline fractions, protective goggles, protective gowns and protective gloves made of nitrile rubber are required. Care must be taken to ensure that the room is well ventilated. Containers must be kept out of the reach of children and tightly closed in a well-ventilated and cool place.


Effect on the human body 
  
Inhaling the vapors leads to dizziness and headaches; in higher concentrations they have a narcotic effect after initial excitement. Consequences of death cannot be ruled out. Hexane irritates the eyes and the mucous membranes, nausea and vomiting can also occur. Intense skin contact can lead to pain and eczema. The substance is highly addictive when sniffing. Long-term exposure can cause nerve damage and paralysis.
  
  
properties 
  
n-Hexane is a colorless, gasoline-like smelling liquid that can hardly be distinguished from the similar cyclohexane from the outside. Hexane is only soluble in traces in water. It is very soluble in ethyl alcohol, diethyl ether or chloroform. Fats and oils also dissolve well in hexane. The liquid is very volatile and evaporates at room temperature. This creates explosive gas mixtures with the air. Hexane vapors are heavier than air and spread across the floor. The alkane burns with a weakly sooty flame.

    

  

There are five hexane isomers. The branched isomers have a lower boiling point than the unbranched one n-Hexane, its knock resistance is better. All isomers are water-soluble only in traces and they form explosive mixtures with air. They differ in their chemical-physical properties:
 
    
 
When mixing n-hexane with a little bromine, the bromine dissolves in the hexane with a yellow-brown color after shaking. No further reaction can be achieved by heating. Only when exposed to intense UV light does the solution discolor. The bromine reacts in a substitution reaction with the hexane to form hydrogen bromide and bromine hexane, a toxic member of the hydrogen halide family. The resulting hydrogen bromide forms an acid with water. A moistened universal indicator paper turns red when it comes into contact with the gaseous product.
  
 


 
When bromine is dissolved in hexane, a yellow-brown solution is formed. This solution comes with
UV light irradiated. The solution gradually decolorizes upon exposure to light and upon shaking.

This demonstration is problematic in schools. Film available on> DVD
   
Manufacturing 
  
  
use 
  
Hexane is a universal solvent and extractant. In platinum reforming, benzene is obtained from hexane through dehydrogenation. Hexane is often contained as a diluent in paints, printing inks or adhesives, where it can be misused as a sniff. In thermometers, like ethyl alcohol, it serves as a substitute for mercury.