Clever Geek Handbook
📜 ⬆️ ⬇️

Benzyl alcohol

Benzyl alcohol (phenylcarbinol) is an organic compound , the simplest aromatic alcohol , C 6 H 5 CH 2 OH.

Benzyl alcohol
Benzyl-alcohol-2D-skeletal.png
Benzyl alcohol
Are common
Chem. formulaC 7 H 8 O
Physical properties
Molar mass108.14 g / mol
Density1,045 g / cm³
Thermal properties
T. melt.-15 ° C
T. Kip.205 ° C
Chemical properties
pK a15.4
Classification
Reg. CAS number100-51-6
Pubchem
Reg. EINECS number
SMILES
Inchi
Codex Alimentarius
RTECS
CHEBI
Chemspider

Content

Properties

Colorless liquid with a faint pleasant odor; t boiling point 205,8 ° C; density of 1045.5 kg / m³ (1.0455 g / cm³) at 20 ° C. Benzyl alcohol is highly soluble in organic solvents and liquid SO 2 and NH 3 , 4 g of benzyl alcohol is dissolved in 100 g of water.

Chemical Properties

Interaction with alkali and alkaline earth metals:

2C6HfiveCH2OH + 2 N a → 2 C 6 H five C H 2 O N a + H 2{\ displaystyle {\ mathsf {2C_ {6} H_ {5} CH_ {2} OH + 2Na \ rightarrow 2C_ {6} H_ {5} CH_ {2} ONa + H_ {2}}}  

sodium benzylate is formed

Interaction with phosphorus trichloride - benzyl chloride is formed

3C6HfiveCH2OH+PCl3→3C6HfiveCH2Cl+H3PO3{\ displaystyle {\ mathsf {3C_ {6} H_ {5} CH_ {2} OH + PCl_ {3} \ rightarrow 3C_ {6} H_ {5} CH_ {2} Cl + H_ {3} PO_ {3}} }}  

Interaction with acetic anhydride - benzyl ester of acetic acid ( benzyl acetate ) is formed:

C6HfiveCH2OH+(CH3CO)2O→C6HfiveCH2OCOCH3+CH3COOH{\ displaystyle {\ mathsf {C_ {6} H_ {5} CH_ {2} OH + (CH_ {3} CO) _ {2} O \ rightarrow C_ {6} H_ {5} CH_ {2} OCOCH_ {3} + CH_ {3} COOH}}}  

Being in nature

In the free state or in the form of benzoic esters , salicylic and acetic acids, benzyl alcohol is contained in essential oils , such as jasmine , clove , Peruvian balsam , etc.

Getting

Get benzyl alcohol saponification of benzyl chloride mainly in the presence of alkali :

C6HfiveCH2Cl+H2O→C6HfiveCH2OH+HCl{\ displaystyle {\ mathsf {C_ {6} H_ {5} CH_ {2} Cl + H_ {2} O \ rightarrow C_ {6} H_ {5} CH_ {2} OH + HCl}}}  

as well as the action of alkali on a mixture of benzoic aldehyde and formaldehyde :

C6HfiveCHO+HCHO+NaOH→C6HfiveCH2OH+HCOONa{\ displaystyle {\ mathsf {C_ {6} H_ {5} CHO + HCHO + NaOH \ rightarrow C_ {6} H_ {5} CH_ {2} OH + HCOONa}}}  

(see Cannizzaro Reaction ).

Application

Benzyl alcohol is used in perfumery , as well as a solvent for varnishes . Also used for disinfection of oil solutions of drugs for intramuscular administration in pharmacology.

Registered as a food additive E1519 .

Literature

  • Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1988. - Vol. 1 (Abl-Dar). - 623 s.
Source - https://ru.wikipedia.org/w/index.php?title=Benzyl alcohol_oldid = 99413100


More articles:

  • Haydn Orchestra
  • Digital Technology
  • Battle of the Terrible (1999-2000)
  • Samoilovich, Grigory Ivanovich
  • Alando
  • List of Diplomatic Missions of Nepal
  • Oshkaln, Otomar Petrovich
  • Vahdattiye
  • Isi Bin Yehuda
  • IGY Valley

All articles

Clever Geek | 2019