Glycerol is a valuable co-product from oleochemical industry such as from fatty acid and biodiesel production. By having three hydroxyl groups in its molecule, glycerol can undergo chemical modifications that lead to many possible applications. This paper reports the tosylation process of glycerol with para-toluenesulfonyl chloride (p-TsCl). Reaction of glycerol with p-TsCl in the presence of a base produced mono-, di- and tri-tosylate of glycerol even though the reaction was carried out at the mole ratio of 1.2:1.0 of glycerol to p-TsCl. The compounds were successfully isolated and characterized. Mono-, di- and tri-tosylate of glycerol exhibited inhibitory activity against Staphylococcus aureus (gram positive bacteria) and Pseudomonas aeruginosa (gram negative bacteria).
This paper reports the effects of glyceryl ether specifically mono-tert-butoxypropanediol on oil in water emulsion system.
Based on 12 HLB value, screening for stable emulsions was carried out without the presence of glyceryl ether. A stable
emulsion was used as a control. Then the effects of glyceryl ether on the emulsion system were investigated. The emulsions
prepared were analyzed for stability, viscosity, pH value, particle size, in vitro dermal irritation potential, in vitro ocular
irritation potential and also moisturizing property. The incorporation of glycerol in the emulsion system was also done
for comparison. Emulsions with glyceryl ether showed lower viscosity values than emulsions with glycerol. Furthermore,
the emulsions also exhibited moisturizing property compared to the control emulsion. Glyceryl ether is suitable to be
used in cosmetic products which require reduced viscosity but retain its skin hydration property.