4571. Guaran

Nomenclature

CAS number: 9000-30-0

Description and references

Principal polysaccharide from endosperm of guar seeds, Cyamopsis tetragonaloba (L.) Taub., Leguminosae: Heyne, Whistler, J. Am. Chem. Soc. 70, 2249 (1948). Structure: Whistler, Durso, ibid. 74, 5140 (1952). Configuration: Koleske, Kurath, J. Polym. Sci. A 2, 4123 (1964). Review: Deuel et al., Chimia 8, 64 (1954).

Chemical structure

Properties

[α]D25 +53° (1N NaOH). Sol in cold water.

Derivative

Triacetate.

Properties

Fibrous material, mp 226-227°. Can be formed into strong films which can be elongated 550%. Becomes birefringent and does not develop crystallinity.

Use

In textile and paper industry.