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Sorbitane Monostearate (E491) is an ester of sorbitan (a sorbitol derivative) and stearic acid and is sometimes referred to as a synthetic wax.
Sorbitane Monostearate (E491) is a sorbitan monoester than is used as a non-ionic detergent.
Sorbitane Monostearate (E491) is a fatty acid ester.
CAS: 1338-41-6
MF: C24H46O6
MW: 430.62
EINECS: 215-664-9
Synonyms
FEMA 3028;EMALEX SPE-100S;ARLACEL 60;SPAN(TM) 60;SPAN 60;SPAN(R) 60;SPAN NO 60;SORBITAN;MONOSTEARATE;SORBITAN MONOSTEARATE;1338-41-6;Arlacel 60;Span 60;Sorgen 50;Sorbitan, monostearate;Sorbitan stearate;Anhydrosorbitol stearate;FEMA No. 3028;Sorbitan, monooctadecanoate;Lipsorb s;Anhydrosorbitol monostearate;Sorbitan monooctadecanoate;Sorbitan stearate [INN];NVZ4I0H58X;INS NO.491;Glycomul S;Liposorb S;Sorbitan C;Armotan MS;Sorbitan 0;INS-491;Drewsorb 60;Crill 3;Montane 60;Liposorb S-20;Durtan 60;Newcol 60;Crill K 3;NonionSP 60R;Nikkol SS 30;Nonion SP 60;Rikemal S 250;Sorbon S 60;Sorbitan Monostearate (Technical Grade);Ionet S 60;NCGC00164333-01;Nissan nonion SP 60;Span 55;Emsorb 2505;1,4-Anhydro-D-glucitol, 6-octadecanoate;E-491;[(2R)-2-[(2R,3R,4S)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] octadecanoate;Stearic acid, monoester with sorbitan;Sorbitani stearas;1,4-anhydro-6-O-stearoyl-D-glucitol;D-Glucitol, anhydro-, monooctadecanoate;Hodag SMS;Stearate de sorbitan;Estearato de sorbitano;UNII-NVZ4I0H58X;HSDB 778;MS 33F;Sorbitani stearas [INN-Latin];Sorbitan monostearate [USAN:NF];MS 33;Stearate de sorbitan [INN-French];5093-91-4;EINECS 215-664-9;Nonionic Surfactants;Estearato de sorbitano [INN-Spanish];D-Glucitol, 1,4-anhydro-, 6-octadecanoate;Span? 60;DSSTox_CID_7396;EC 215-664-9;SCHEMBL5447;DSSTox_RID_78436;DSSTox_GSID_27396;SORBITAN STEARATE [MI];CHEMBL3186117;DTXSID70872695;CHEBI:183394;SORBITAN STEARATE [MART.];SORBITAN MONOSTEARATE [II];SORBITAN MONOSTEARATE [FCC];SORBITAN STEARATE [WHO-DD];1,4-Anhydro-D-glucitol 6-stearate;SORBITAN MONOSTEARATE [FHFI];SORBITAN MONOSTEARATE [HSDB];SORBITAN MONOSTEARATE [USAN];Tox21_112100;SORBITAN MONOSTEARATE [VANDF];AKOS040744690;HY-W129593;SORBITAN STEARATE [EP MONOGRAPH];1,4-Anhydro-6-O-octadecanoyl-D-glucitol;CAS-1338-41-6;CS-0187722;S0062;Q907898;J-006442;Sorbitan monostearate, meets FCC analytical specifications;(R)-2-((2R,3R,4S)-3,4-dihydroxytetrahydrofuran-2-yl)-2-hydroxyethyl stearate
Sorbitane Monostearate (E491) Chemical Properties
Melting point: 54-57 °C(lit.)
Boiling point: 464.84°C (rough estimate)
Density: 1.00
Vapor pressure: <1.4 hPa (20 °C)
FEMA: 3028 | SORBITAN MONOSTEARATE
Refractive index: 1.4593 (estimate)
Fp: >230 °F
Storage temp.: Store below +30°C.
Solubility: Practically insoluble, but dispersible in water, slightly soluble in alcohol.
Form: Solid
pka: 13.63[at 20 ℃]
Color: Cream coloured flakes
Odor: Slight
Odor Type: bland
Water Solubility: Soluble in ethanol (50 mg/ml), isopropanol, mineral oil and vegetable oil. Insoluble in water.
Merck: 14,8724
BRN: 6820761
Hydrophilic-Lipophilic Balance (HLB): 4.7
Exposure limits ACGIH: TWA 10 mg/m3; TWA 3 mg/m3
Stability: Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey: HVUMOYIDDBPOLL-XGKPLOKHSA-N
LogP: 7.66
CAS DataBase Reference: 1338-41-6(CAS DataBase Reference)
EPA Substance Registry System: Sorbitane Monostearate (E491) (1338-41-6)
Sorbitane Monostearate (E491) has a bland odor and taste.
Sorbitane Monostearate (E491) is a mixture of partial stearic and palmitic acid esters of sorbitol and its mono- and dianhydrides.
For additional details of description, refer to Burdock (1997).
Sorbitane Monostearate (E491) is an ester of sorbitan -a sorbitol derivative- and stearic acid and is sometimes referred to as a synthetic wax.
Sorbitane Monostearate (E491) is primarily used as an emulsifier to keep water and oils mixed.
Sorbitane Monostearate (E491) is used in the manufacture of food and healthcare products and is a non-ionic surfactant with emulsifying, dispersing, and wetting properties.
Sorbitane Monostearate (E491) is also employed to create synthetic fibers, metal machining fluid, and brighteners in the leather industry, and as an emulsifier in coatings, pesticides, and various applications in the plastics, food and cosmetics industries.
Sorbitane Monostearate (E491) is also known as "Spans".
Sorbitane Monostearate (E491) has been approved by the European Union for use as a food additive -emulsifier
Sorbitane Monostearate (E491) is produced by the esterification of Sorbitol with commercial Stearic acid derived, and consists of approximately 95% of mixture of esters of sorbitol and its mono- and di-anhydrides.
Sorbitane Monostearate (E491) is a light cream to tan coloured hard, waxy solid with a slight characteristic odour and bland taste.
Sorbitane Monostearate (E491) is insoluble in water and dispersible in hot water.
Sorbitane Monostearate (E491) is a lipid-soluble compound that is used as a surfactant and emulsifier in food products.
Sorbitane Monostearate (E491) has been found to be nontoxic when administered at concentrations up to 5000 mg/kg of body weight for 28 days.
Sorbitane Monostearate (E491) has been shown to be nontoxic in vitro, but the long-term toxicity of this compound has not been established.
Sorbitane Monostearate (E491) also exhibits hydrogen bonding interactions with calcium pantothenate, sodium salts, and coumarin derivatives.
The model system used was an artificial membrane composed of chitosan quaternary ammonium and monolaurate.
This study found that Sorbitane Monostearate (E491) is able to permeabilize the membrane at an optimum concentration.
Uses
Sorbitane Monostearate (E491) is a sorbitan ester used for emulsification.
Sorbitane Monostearate (E491) is used as a pigment dispersion additive for PP color concentrates and as an antistatic agent for PVC.
Sorbitane Monostearate (E491) is an emulsifier for water-in-oil creams and lotions, and a solubilizer of essential oils in water.
Sorbitane Monostearate (E491) results from the reaction of stearic acid with sorbitol and is, therefore, synthetically produced from naturally derived materials.
Sorbitane Monostearate (E491) is a lipophilic emulsifier that is a sorbitan fatty acid ester, being a sorbitol-derived analog of glycerol monostearate.
Sorbitane Monostearate (E491) is a nonionic, oil-dispersible surface-active agent.
Sorbitane Monostearate (E491) is used as a gloss enhancer in chocolate coatings; as a dispersant aid in coffee whiteners; to increase volume in cakes and icings; and often in combination with polysorbates.
Typical usage level ranges from 0.30 to 0.70%.
Sorbitane Monostearate (E491) is used as emulsifier for baked goods, icings & filings and whipped toppings.
Sorbitane Monostearate (E491) is also used as a rehydration aid (production of active dry yeast) and as synthetic flavoring substances and adjuvants.
Sorbitane Monostearate (E491) has only a very faint, oily-waxy odor, and a bitter taste in concentrations higher than 1000 ppm.
However, Sorbitane Monostearate (E491)'s insolubility in water, and the fact that it is used mostly with large amounts of sugar (and acid) account for the much higher use level without any serious influence upon the flavor of the finished product.
Preparation
Prepared by reacting edible commercial stearic acid (usually containing associated fatty acids, chiefly palmitic) with sorbitol.
