Functions
Binder
Viscosity controlling agent
Gelling agent
Fragrance
CAS Number(s)
9002-18-0
EINECS number(s)
232-658-1
FDA UNII
89T13OHQ2B
INCI name
Agar
Agar is a galactose sulfate polymer obtained from red seaweeds like Gracilaria and Gelidium and forms heat-stable, strong gels at concentrations less than 0.5%. The gel forms at 90°F and melts at 190°F, showing a high hysteresis lag.
This unique property of Agar facilitates the processing of gelled cosmetic products. Traditional agar requires boiling at 100°C (212°F), while a new type of agar, subjected to special processing conditions, can be hydrated at 82°C (180°F).
Combined with other hydrocolloids, Agar can yield unique textural properties, and various gelling and melting points.
See also
Synonyms
Agar, Unspecified
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