Online Edition: "Specifications for Flavourings"


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Flavouring Guaiacol
Synonym(s) 1-Hydroxy-2-methoxybenzene
o-Hydroxyanisole
o-Methoxyphenol
o-Methylcatechol
1-Oxy-2-methoxybenzene
Pyrocatechol monomethyl ether
Pyroguaiac acid
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name o-Methoxyphenol
JECFA number 713
CAS number 90-05-1  
FEMA number 2532
COE number 173
FLAVIS number -
Molecular weight 124.14 
Chemical formula C7H8O2  
Physical form/odour Colourless to amber crystals, powerful, smoke-like, somewhat medicinal odour 
Solubility slightly soluble in water 
Solubility in ethanol very soluble 
Boiling point (°C) 203-206°
Assay min % 99%
Acid value max -
Refractive index 1.540-1.545
Specific gravity 1.129-1.140
Other requirements mp: 28° (liquid which may crystallize)
ID Test IR
Spectrum http://www.fao.org/ag/agn/jecfa-flav/img/img_add8/713.gif