Butane

|- | Density |601 kg/m3 in the liquid state close to the point of boiling 2,52 kg/m3 in a gas state (T=288K, p=1 atm) |-

The butane is a Hydrocarbure saturated with the family of the Alcane S. There exists in 2 forms Isomère S. There is soluble in alcohol and the ether, but little in water. Not very reactive, it requires a Catalyseur to take part in chemical reactions. It is obtained starting from the fractions of oil.

Butane

Number EINECS 203-448-7 other names: N-butane; diéthyl; méthyléthylméthane. N-butane is obtained by Distillation under pressure of the G.P.L (Petroleum gas liquefied S).

Isobutane

See also: Isobutane

Other names: I-butane; triméthylméthane; 1,1-diméthyléthane; 2-methylpropane; R600a cooling agent

Reactions and utilities

In the presence of Dioxygène, butane burns to form Carbon dioxide and vapor of Eau. In limited presence of oxygen, Carbon monoxide can be also formed.

N-Butane is the reagent for the synthesis of the maleic Anhydride by the Procédé of Dupont.

Equation:

CH3CH2CH2CH3 + 7/2 O2 → C2H2 (CO) 2O + 4:00 2O

Like many hydrocarbons, butane reacts with chlorine to form 1-chloro- and 2-chlorobutane, but also of others made up pls substituted. the rates of chlorination can be partially explained by different energy from dissociation, 425 and 411 kJ/mole for the 2 types of CH connections (2 central carbons have weaker CH connections).

Butane is sold out of bottle like fuel. It is also used in petrochemical industry.

Sentences of risk and the Councils of prudence

  • R 12: Extremely flammable

  • S 2: To preserve out of the range of the children
  • S 9: To preserve the container in a place ventilated well
  • S 16: To preserve well off any flame or source of sparks. Not to smoke

See too

External bonds

  • NIST Chemistry WebBook in English
  • French Committee Butane Propane

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