Guar hydroxypropyltrimonium chloride

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Guar hydroxypropyltrimonium chloride
Other names
Guar, 2-hydroxy-3-trimethylammoniopropyl ether, chloride
ECHA InfoCard 100.114.215 Edit this at Wikidata
RTECS number
  • MG0192000
Density 1.3
Lethal dose or concentration (LD, LC):
1.25g/kg rat[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Guar hydroxypropyltrimonium chloride is an organic compound that is a water-soluble quaternary ammonium derivative of guar gum. It gives conditioning properties to shampoos and after-shampoo hair care products. The effects of the cationic charge density, guar concentration in aqueous solution, and treatment time on bleached European hair have been studied. A mechanical testing method has been successfully applied to determine the efficacy of cationic guars to improve the ease of combing. The results were confirmed in a shampoo formulation on both virgin and bleached hair.[2]


  1. ^ Chambers, Michael. "ChemIDplus - 65497-29-2 - Guar gum, 2-hydroxy-3-(trimethylammonio)propyl ether, chloride - Similar structures search, synonyms, formulas, resource links, and other chemical information".
  2. ^ US patent 5817608, Stephen R. Bell, "Cleansing compositions containing conditioning agents and refined agricultural grains", issued 1998-10-06, assigned to Brimms Inc.