Crills

Personal Care

Crills and Crillets
Sorbitan esters and their ethoxylates
Crills and Crillets are a range of mild nonionic surfactants providing formulating benefits in a number of personal care applications. Entirely vegetable-derived, Croda's Crills and Crillets have long-standing food and pharmacopoeia approvals and a safe history of use in cosmetic products. As nonionics Crills andCrillets offer many advantages over ionic surfactants such as soaps, including increased stability, formulating flexibility and wider compatibility. They are stable to mild acids, alkalis and electrolytes and do not react with ionic ingredients or actives. By combining Crills and Crillets at different ratios, formulators are able to produce systems with a wide HLB range to emulsify most cosmetic oils andwaxes. Certain Crills and Crillets are additionally highly effective solubilisers, dispersing agents and wetting aids. Functional benefits · Nonionic emulsifiers and co-emulsifiers · Solubilisers · Dispersants · Wetting agents · Stable over a wide pH range · Electrolyte tolerant · Compatible with a wide range of cosmetic actives eg AHA/BHA, cationics, nonionics Applications · O/W and W/O creamsand lotions · Sun protection and tanning products · Antiperspirants and deodorants · Depilatories · Hair dyes · Colour cosmetics · Bath and massage oils · EDT, aftershaves and colognes Product range Product name Crill 1 Crill 2 Crill 3 Crill 4 Crill 43 Crill 45 Crill 6 Crillet 1 Super Crillet 2 Super Crillet 3 Super Crillet 4 Super Crillet 45 INCI name Sorbitan Laurate Sorbitan Palmitate SorbitanStearate Sorbitan Oleate Sorbitan Sesquioleate Sorbitan Trioleate Sorbitan Isostearate Polysorbate 20 Polysorbate 40 Polysorbate 60 Polysorbate 80 Polysorbate 85 Pharmacopoeia monograph EP, NF EP, NF EP, NF EP, NF NF EP, NF EP, NF NF EP, NF EP, NF -

Croda Chemicals Europe Personal Care Cowick Hall Snaith Goole East Yorkshire DN14 9AA England Tel +44 (0)1405 860551 Fax +44 (0)1405 860205 E-mailpc-europe@croda.com www.croda.com/europe/pc
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Personal Care

Crills - sorbitan esters
Crills are partial esters of natural fatty acids and sorbitan, the cyclic ether produced by the dehydration of the hexahydric alcohol, sorbitol. A monoester can be represented by the following general formula where 'R' is the alkyl group of the fatty acid.
OH R O O O HO
Figure 1OH
Chemical structure - monoester

Properties and functions Crill 4, 43, 45 and 6 used alone act as effective water in oil (W/O) emulsifiers. When combined with the corresponding Crillet, Crills are efficient coemulsifiers for oil in water (O/W) systems. Manipulation of the Crill/Crillet ratio produces emulsifying systems of various HLB (hydrophilic-lipophilic balance) values, allowing theemulsification of many cosmetic oils and waxes. Specific properties and functions are detailed below. Product name Crill 1 Description Pale yellow liquid Cream solid Cream/yellow solid HLB 8.6 Properties and functions Most hydrophilic of the Crill range, soluble in many fatty compositions and solvents. Acts as a coemulsifier in O/W emulsions, often used in combination with Crillet 1, although otherCrillets may be employed Possesses a wax-like structure which is useful where rigidity is needed in lipophilic compositions Produces stable O/W emulsions with good aesthetics when combined with its polyethoxylated derivative, Crillet 3. Recommended for the emulsification of fatty alcohols, esters, mineral and silicone oils. Ideal for skin creams and lotions Liquid W/O emulsifiers, particularlyrecommended for unsaturated lipid components such as oleyl alcohol or vegetable oils. May also be used with the corresponding Crillet in O/W emulsions. Dispersing agents for insoluble liquids in other lipophilic liquids. Crill 4 and 43 are used as wetting agents and dispersants for pigments in colour cosmetics and zinc oxide/titanium dioxide in suncare products Excellent W/O emulsifier for...