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| Catalog Number | CI-SC-0206 |
| Product Name | Sorbitan Stearate |
| CAS | 1338-41-6 |
| Structure |  |
| Synonyms | Span 60;Sorbitan, esters, monooctadecanoate;Sorbitan, monooctadecanoate;Sorbitan, monostearate;Sorbitan monostearate;Anhydrosorbitol monostearate |
| Description | Emulsifying agent derived from sorbitol and stearic acid. Saponification value 147-157. HLB value 4.7 (gives water-in-oil emulsions). |
| IUPAC Name | [(2R)-2-[(2R,3R,4S)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] octadecanoate |
| Molecular Weight | 430.62 g/mol |
| Molecular Formula | C24H46O6 |
| Canonical SMILES | CCCCCCCCCCCCCCCCCC(=O)OC[C@H]([C@@H]1[C@@H]([C@H](CO1)O)O)O |
| InChI | HVUMOYIDDBPOLL-XWVZOOPGSA-N |
| InChI Key | InChI=1S/C24H46O6/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-22(27)29-19-21(26)24-23(28)20(25)18-30-24/h20-21,23-26,28H,2-19H2,1H3/t20-,21+,23+,24+/m0/s1 |
| Boiling Point | 465 °C |
| Melting Point | 54-57 °C(lit.) |
| Purity | 99%+ |
| Density | 1.0 g/mL |
| Solubility | Partly soluble in alcohols, insoluble in water & oils |
| Appearance | Pale-yellow pellets, odorless |
| Application | Lotions, creams, ointments, various makeup products. |
| Storage | Store in a closed container at a dry place at room temperature |
| Composition | Sorbitan monostearate |
| Features And Benefits | Mild all-purpose water-in-oil emulsifier (enables water & oil to mix)Emulsion can be further stabilized when combined with polysorbate 60 or 80Acts as dispersing agent and has thickening properties |
| GMO | GMO-free |
| HS Code | 3402130000 |
| INCI | Sorbitan monostearate |
| Isomeric SMILES | CCCCCCCCCCCCCCCCCC(=O)OC[C@H]([C@@H]1[C@@H]([C@H](CO1)O)O)O |
| Manufacture | Sorbitan stearate is obtained by esterification of sorbitan (a sorbitol derivative) with the fatty acid stearic acid. |
| Preservation | Preservative-free |
| Purity Grade | No purity grade applicable |
| Raw Material Source | Sorbitol, stearic acid (from vegetable oils) |
| Topological Polar Surface Area | 96.2 Ų |
| Uses | Warm to melt before use. Typical use level 1 - 6%. For external use only. |
Sorbitan Stearate, also known by the trade names Crill 3 NF and Lumisorb™ SMS KP, is a versatile ester of sorbitan and stearic acid, sourced from naturally renewable resources. This creamy, odorless, and tasteless solid is insoluble in both water and vegetable or mineral oils, although it can be dispersed in oils when heated and cooled. It also forms a gel in mineral oil at a concentration of 10%. With a hydrophilic-lipophilic balance (HLB) value of 4.7, Sorbitan Stearate serves as an excellent water-in-oil emulsifier. Furthermore, when combined with polysorbates, it acts as an effective co-emulsifier in oil-in-water systems, allowing for the formation of emulsifying systems with varied HLB values suitable for numerous cosmetic and pharmaceutical applications. Additionally, it functions as a solubilizing agent and is particularly effective when combined with polysorbates like Polysorbate 60. Recognized as a multi-purpose food additive, Sorbitan Stearate is deemed safe for use in skincare products, as per 21CFR 172.842 2.
What is Sorbitan Stearate?
Sorbitan Stearate, also known as Sorbitan Monostearate, is an ester of sorbitan and stearic acid. It is a creamy, odorless, and tasteless solid that is insoluble in water, as well as in vegetable and mineral oils.
What are the key properties of Sorbitan Stearate?
Sorbitan Stearate is an excellent water-in-oil emulsifier with a Hydrophilic-Lipophilic Balance (HLB) value of 4.7. It is dispersible in oils if heated and cooled, and can gel in mineral oil at a 10% concentration.
In what applications is Sorbitan Stearate commonly used?
Sorbitan Stearate is used in cosmetic and pharmaceutical formulations primarily as an emulsifier and solubilizing agent. It is effective in both water-in-oil and oil-in-water systems, especially when combined with polysorbates like Polysorbate 60.
How does Sorbitan Stearate contribute to emulsifying systems?
When combined with polysorbates (polyoxyethylene sorbitan fatty acid esters), Sorbitan Stearate acts as a co-emulsifier. By adjusting their ratios, manufacturers can create emulsifying systems with various HLB values to suit different ingredients.
Is Sorbitan Stearate safe for use in skincare products?
Yes, Sorbitan Stearate is considered safe for use in skincare applications. It is listed in the food additive regulations under 21CFR 172.842 2, acknowledging its safety and multifunctional use.
Can Sorbitan Stearate be used in food products?
Yes, Sorbitan Stearate is approved as a multi-purpose food additive, further confirming its safety and versatility, particularly in formulations that require emulsification.
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