"The more common diols with alcohol substituents on the end carbons are ineffective at bleed control at concentration under 10% by weight, this includes such compounds as 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol. 1,2,6-hexanetriol, as discussed in some detail below, was ineffective at 20% by weight." . . . .