CAS 107-92-6: Butyric Acid (C4H8O2)

Identity

CAS Number107-92-6
Molecular FormulaC4H8O2
IUPAC Namebutanoic acid
Molecular Weight88.11 g/mol
SMILESCCCC(=O)O
Synonymsbutanoic acid, n-butyric acid, propylformic acid, ethylacetic acid

2D Structure

Physical Properties

Density0.959 g/mL at 25°C
Boiling Point163.5°C
Melting Point-5.1°C
Flash Point72.0°C
Vapor Pressure0.1 kPa at 20°C
Refractive IndexnD = 1.399
Dielectric Constantε = 2.9

Safety & GHS Classification

GHS05Irritant

Storage: Store in corrosion-resistant container (glass or PTFE). Has strong, unpleasant odor (rancid butter). Keep away from strong bases and oxidizers. Use in fume hood. Store in well-ventilated area.

Material Compatibility Matrix

Plastics

MaterialRating
PTFEExcellent
PVCGood
PEExcellent
PPExcellent
PEEKExcellent
PVDFExcellent

Rubbers

MaterialRating
VitonExcellent
NBRGood
EPDMExcellent
SiliconeGood
FKMExcellent

Metals

MaterialRating
Stainless 316Excellent
AluminumGood
CopperFair
BrassFair

Applications

External References: PubChem

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