HEXANOIC ANHYDRIDE

HEXANOIC ANHYDRIDE Basic information
Product Name:HEXANOIC ANHYDRIDE
Synonyms:N-BUTYLACETIC ANHYDRIDE;N-CAPRONIC ANHYDRIDE;N-CAPROIC ANHYDRIDE;N-HEXOIC ANHYDRIDE;PENTYLFORMIC ANHYDRIDE;N-CAPROICANHYDRIDE=HEXANOICANHYDRIDE;Bis(hexanoic)anhydride;Biscaproic anhydride
CAS:2051-49-2
MF:C12H22O3
MW:214.3
EINECS:218-121-4
Product Categories:Pharmaceutical Intermediates
Mol File:2051-49-2.mol
HEXANOIC ANHYDRIDE Structure
HEXANOIC ANHYDRIDE Chemical Properties
Melting point -40 °C
Boiling point 246-248 °C (lit.)
density 0.928 g/mL at 20 °C (lit.)
vapor pressure 2.9Pa at 25℃
refractive index n20/D 1.428(lit.)
Fp >230 °F
storage temp. Store below +30°C.
solubility ethanol: soluble1g/10 mL, clear, colorless
form Liquid
color Clear colorless to light yellow
explosive limit0.7%(V)
Water Solubility Hydrolyzes in water.
Sensitive Moisture Sensitive
BRN 1776561
LogP4.45 at 25℃
CAS DataBase Reference2051-49-2(CAS DataBase Reference)
EPA Substance Registry SystemHexanoic acid, anhydride (2051-49-2)
Safety Information
Hazard Codes C
Risk Statements 34
Safety Statements 26-36/37/39-45
RIDADR UN 3265 8/PG 2
WGK Germany 3
TSCA Yes
HazardClass 8
PackingGroup III
HS Code 29159000
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
ALFA English
HEXANOIC ANHYDRIDE Usage And Synthesis
Chemical Propertiesclear colorless to light yellow liquid
UsesHexanoic anhydride was used in:
  • green synthesis of esters of acyclovir (acyclovir prodrugs)
  • preparation of hexanoyl-modified chitosan nanoparticles
  • preparation of chitosan-based polymeric surfactants via N-acylation of chitosans
UsesHexanoic anhydride has been used in:
  • green synthesis of esters of acyclovir (acyclovir prodrugs)
  • preparation of hexanoyl-modified chitosan nanoparticles and chitosan-based polymeric surfactants via N-acylation of chitosans
UsesHexanoic Anhydride, is used as a reactant in the total synthesis of acremomannolipin A via steroselective β-mannosylation of 4,6,-O-benzylidene-protected mannosyl sulfoxide with a D-mannitol derivative.
PreparationTo an ice-cooled flask containing 116 gm (1.0 mole) of n-caproic acid is added 21.0-23.10 gm (0.5-0.55 mole) of ketene at a rate of 0.45 mole/hr. The reaction mixture is fractionally distilled at atmospheric pressure to afford a forecut of acetone, acetic acid, and acetic anhydride. The oil bath is raised to 220°C over a 1-hr period, kept there for 3 hr to ensure complete removal of acetic acid, and then cooled. The distillation is continued under reduced pressure to afford 86-95 gm (80-87%), b.p. 109- 112°C (3 mm Hg) and b.p. 118-121°C (6 mm Hg).
Preparation of n-Caproic Anhydride
Flammability and ExplosibilityNotclassified
HEXANOIC ANHYDRIDE Preparation Products And Raw materials
Raw materialsHexanoic acid-->ketene
Preparation ProductsGERANYL CAPROATE-->N-OCTYL CAPROATE-->N-CAPROIC ACID ISOPROPYL ESTER-->HEXANAMIDE-->PENTYL HEXANOATE
LAURIC ANHYDRIDE CYCLOHEXYLPROPIONIC ANHYDRIDE N-CAPRYLIC ANHYDRIDE NONANOIC ANHYDRIDE OLEIC ANHYDRIDE BEHENIC ANHYDRIDE DECANOIC ANHYDRIDE HEXANOIC ANHYDRIDE RUBRATOXIN B ELAIDIC ANHYDRIDE PERFLUOROOCTANOIC ANHYDRIDE HEPTADECANOIC ANHYDRIDE CIS-13-DOCOSENOIC ANHYDRIDE Caproic Anhydride (Hexanoic Anhydride) MYRISTIC ANHYDRIDE Palmitic anhydride ARACHIDIC ANHYDRIDE LINOLEIC ANHYDRIDE

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