PRODUCTS

SORBITAN MONOOLEATE

Sorbitan monooleate consists of a combination of anionic, nonionic and amphoteric surfactants. Sorbitan monooleate is used in hard surface cleaning, textile pretreatment and laundry detergents.Sorbitan monooleate is a suitable additive for hydrogen peroxide-based cleaners.

CAS NUMBER : 1338-43-8

SYNONYM :

Sorbitan monooleate; Sorbitan, mono-(9Z)-9-octadecenoate; Arlacel 80;Span 80;SORBITAN OLEATE;UNII-06XEA2VD56;06XEA2VD56; NCGC00164240-01; DSSTox_CID_7397; DSSTox_RID_78437;DSSTox_GSID_27397;1,4-anhydro-6-O-[(9Z)-octadec-9-enoyl]-D-glucitol; Sorbitan oleate [INN]; CAS-1338-43-8; Sorbitani oleas; Glycomul O; Sorbitan O; Alkamuls SMO; Armotan MO; Dehymuls SMO; Lonzest SMO; NSC 406239; Oleate de sorbitan; Kosteran O 1; Oleato de sorbitano; Crill 4; Sorbester P 17; Disponil 100; Montan 80; Newcol 80; Nonion OP80R; Radiasurf 7155; Sorgen 40; Sorgen 40A; Montane 80 VGA; Rheodol AO 10;Atmer 05; Emasol O 10; Emasol O 10F; Kemmat S 80; Nikkol SO 10; Nikkol SO-15; Sorbon S 80; Emasol 410; Rheodol SP-O 10

Sorbitan monooleate is a non-ionic surfactant. Sorbitan monooleate A mixture of the partial esters of sorbitol and Sorbitan monooleate mono- and dianhydrides with edible oleic acid (R). Sorbitan monooleate in greatest abundance is 1,4- sorbitan monooleate, with lesser abundance of isosorbide monooleate, sorbitan dioleate and sorbitan trioleate. Sorbitan monooleate is used as emulsifier, Sorbitan monooleate is used as solubilizer, Sorbitan monooleate is used as stabilizer, Sorbitan monooleate is used as softener, Sorbitan monooleate is used as anti-static agent etc.

Sorbitan monooleate is used as suitable for medicine, cosmetics, textiles, paints etc.Used as W/O emulsion explosive, preparation agent of textile, Sorbitan monooleate is used as emulgator of artesian well weighted mud and producing of food and cosmetic, Sorbitan monooleate is used as dispersant in beaded paint, Sorbitan monooleate is used as stabilizer of itanium dioxide, Sorbitan monooleate is used as insecticide, Sorbitan monooleate is used as wetting agent and emulgator in pesticide, Sorbitan monooleate is used as cosolvent of oil production, antirust of slushing oil, Sorbitan monooleate is used as lubricant and softening agent of textile and leather. The synthesis of sorbitan monooleate was conducted at laboratorium scale by es-terification of sorbitol and oleic acid using p-toluene sulfonic acid as catalyst. The esterifi-cation process was carried out at operation condition : Sorbitan monooleate atmospheric pressure; stirred; 7 hours of reaction; 180oC and concentration of catalyst 2.5 % based on sorbitol. The ratio of oleic acid – sorbitol concentration used in this experiment was varried at 0.75; 1.0; 1.25 and 1.50. A sample was drawn off every 10 minutes during the first hour reaction and e-very 30 minutes during the next six hours.

The analysed of sample was conducting by de-termining acid value to calculate the Sorbitan monooleate product. The result of the experi-ment showed that the optimum ratio of oleic acid - sorbitol was reached at 1.0 with Sorbitan monooleate production of 72.939 % in 60 minutes with acid value 46.132 and 82.93-5 % in 420 minutes with acid value 30.909. An emulsifier Sorbitan monooleate is used as a lipophillic non-ionic surfactant, Sorbitan monooleate emulsifier is used as stabilizer for oil based lotions, Sorbitan monooleate emulsifier is used as ointments, Sorbitan monooleate emulsifier is used in textiles as antistat, Sorbitan monooleate is used as lubricant for fabric softener, sweetening agent, Sorbitan monooleate is used as lubricant for food additive, Sorbitan monooleate is used as lubricant for tooth. Sorbitan monooleate soluble in ethanol at 50mg/ml. Sorbitan monooleate Miscible with water,ethanol,isopropanol and ether; Sorbitan monooleate Insoluble in acetone. 1 Sorbitan monooleate can be used in light pastry products.Sorbitan monooleate can be used in light pastry products, decoration and coating materials. Sorbitan monooleate can be used in bread yeast.

Sorbitan monooleate can be used in oil emulsions Sorbitan monooleate can be used in milk and cream mixtures.Sorbitan monooleate can be used in jelly marmalades.Sorbitan monooleate can be used in tahini halva varieties.Sorbitan monooleate can be used in cocoa-based confectionery. Sorbitan monooleate can be used in chocolates. Sorbitan monooleate can be used in liquid fruit and plant mixtures. Sorbitan monooleate can be used in desserts. Sorbitan monooleate can be used in sugar-based confectionery.Sorbitan monooleate can be used in food supplements. Sorbitan monooleate is a non-ionic surface active agent; Sorbitan monooleate used as emulsifier, Sorbitan monooleate used as stabilizer, and Sorbitan monooleate used as thickener (foods, cosmetics, and medicines), Sorbitan monooleate used as lubricant and Sorbitan monooleate used as softener in textiles, and Sorbitan monooleate used as surfactant for pharmaceuticals; Sorbitan monooleate used as emulsifier for water-in-oil emulsions; Sorbitan monooleate used as for synthesis in chemical industry, Sorbitan monooleate used as refining and processing metals, and in paints, lacquers, and varnishes industry. Sorbitan monooleate is a mild, non-ionic liquid surfactant suitable for use as part of the emulsification system in a wide range of beauty and personal care formulations.

Due to Sorbitan monooleate is low HLB ratio Sorbitan monooleate is best suited to water in oil emulsions. Sorbitan monooleate are derived from dehydration of sorbitol or sorbose and related compounds in ester combination with fatty acids and with short oligo (ethylene oxide) side chains and an oleate terminus to form detergents and surfactants such as polysorbate 80. Sorbitan monooleate appearance may vary from an amber-colored oily, viscous liquid, to a light cream color, to tan beads or flakes or a hard, waxy solid with a slight odor Sorbitan monooleate is also used as surfactants or Sorbitan monooleate is also used as emulsifying agents in the preparation of emulsions, creams, and ointments for pharmaceutical and cosmetic use Sorbitan monooleate is also used as in asthma inhalers has been implicated in causing secondary bronchospasms in children. Sorbitan monooleate may be safely used in accordance with the following prescribed conditions. Sorbitan monooleate is produced by the esterification of sorbitol with commercial oleic acid. Sorbitan monooleate meets the following specifications.Saponification number of Sorbitan monooleate is 145-160. Hydroxyl number of Sorbitan monooleate is 193-210.Sorbitan monooleate is used or intended for use as follows.

Sorbitan monooleate is used As an emulsifier in polymer dispersions that are used in the clarification of cane or beet sugar juice or liquor in an amount not to exceed 7.5 percent by weight in the final polymer dispersion. dehydration reaction usually produces sorbitan as a mixture of five- and six-membered cyclic ethers (1,4-anhydrosorbitol, 1,5-anhydrosorbitol and 1,4,3,6-dianhydrosorbitol)[3] with the five-membered 1,4-anhydrosorbitol form being the dominate product. The rate of formation of sorbitan is typically greater than that of isosorbide, which allows Sorbitan monooleate to be produced selectively, providing the reaction conditions are carefully controlled. The dehydration reaction has been shown to work even in the presence of excess water.

Sorbitan monooleate is a non-ionic surface active agent; Sorbitan monooleate used as emulsifier, Sorbitan monooleate used as stabilizer, and Sorbitan monooleate used as thickener (foods, cosmetics, and medicines), Sorbitan monooleate used as lubricant and Sorbitan monooleate used as softener in textiles, and Sorbitan monooleate used as surfactant for pharmaceuticals; Sorbitan monooleate used as emulsifier for water-in-oil emulsions; Sorbitan monooleate used as for synthesis in chemical industry, Sorbitan monooleate used as refining and processing metals, and in paints, lacquers, and varnishes industry. Sorbitan monooleate is a mild, non-ionic liquid surfactant suitable for use as part of the emulsification system in a wide range of beauty and personal care formulations. Due to Sorbitan monooleate is low HLB ratio Sorbitan monooleate is best suited to water in oil emulsions.

An emulsifier Sorbitan monooleate is used as a lipophillic non-ionic surfactant, Sorbitan monooleate emulsifier is used as stabilizer for oil based lotions, Sorbitan monooleate emulsifier is used as ointments, Sorbitan monooleate emulsifier is used in textiles as antistat, Sorbitan monooleate is used as lubricant for fabric softener, sweetening agent, Sorbitan monooleate is used as lubricant for food additive, Sorbitan monooleate is used as lubricant for tooth. Sorbitan monooleate soluble in ethanol at 50mg/ml. Sorbitan monooleate Miscible with water,ethanol,isopropanol and ether; Sorbitan monooleate Insoluble in acetone. 1 Sorbitan monooleate can be used in light pastry products.Sorbitan monooleate can be used in light pastry products, decoration and coating materials. Sorbitan monooleate can be used in bread yeast.Sorbitan monooleate can be used in oil emulsions Sorbitan monooleate can be used in milk and cream mixtures.Sorbitan monooleate can be used in jelly marmalades.Sorbitan monooleate can be used in tahini halva varieties.Sorbitan monooleate can be used in cocoa-based confectionery. Sorbitan monooleate can be used in chocolates. Sorbitan monooleate can be used in liquid fruit and plant mixtures. Sorbitan monooleate can be used in desserts. Sorbitan monooleate can be used in sugar-based confectionery.Sorbitan monooleate can be used in food supplements.

IUPAC NAME :

(2R)-2-[(2R,3R,4S)-3,4-dihydroxyoxolan-2-;yl]-2-hydroxyethyl (9Z)-octadec-9-enoate; 1,4-anhydro-6-O-oleoyl-D-glucitol;sorbitan oleate;(CAS 9005-65-6);Sorbitan monooleate, ethoxylated

TRADE NAME :

Leunapon-SMO;Polyoxyethylene-80-sorbitan monooleate;Sorbitan, mono-(9Z)-9-octadecenoate;poly(oxy-1,2-ethanediyl) derivs

OTHER NAME :

1286269-72-4;1286269-72-4;1340-85-8;1340-85-8;141927-23-3;141927-23-3; 178631-96-4;178631-96-4;209796-63-4;209796-63-4;2137448-98-5;2137448-98-5; 253447-34-6;253447-34-6;361534-35-2;361534-35-2;37199-23-8;37199-23-8; 37280-84-5

Sorbitan monooleate is used as emulsifier, Sorbitan monooleate is used as solubilizer, Sorbitan monooleate is used as stabilizer, Sorbitan monooleate is used as softener, Sorbitan monooleate is used as anti-static agent etc. Sorbitan monooleate is used as suitable for medicine, cosmetics, textiles, paints etc.Used as W/O emulsion explosive, preparation agent of textile, Sorbitan monooleate is used as emulgator of artesian well weighted mud and producing of food and cosmetic, Sorbitan monooleate is used as dispersant in beaded paint, Sorbitan monooleate is used as stabilizer of itanium dioxide, Sorbitan monooleate is used as insecticide, Sorbitan monooleate is used as wetting agent and emulgator in pesticide, Sorbitan monooleate is used as cosolvent of oil production, antirust of slushing oil, Sorbitan monooleate is used as lubricant and softening agent of textile and leather. The synthesis of sorbitan monooleate was conducted at laboratorium scale by es-terification of sorbitol and oleic acid using p-toluene sulfonic acid as catalyst. The esterifi-cation process was carried out at operation condition.

Sorbitan monooleate atmospheric pressure; stirred; 7 hours of reaction; 180oC and concentration of catalyst 2.5 % based on sorbitol. The ratio of oleic acid – sorbitol concentration used in this experiment was varried at 0.75; 1.0; 1.25 and 1.50. A sample was drawn off every 10 minutes during the first hour reaction and e-very 30 minutes during the next six hours. The analysed of sample was conducting by de-termining acid value to calculate the Sorbitan monooleate product. Sorbitan monooleate may be safely used in accordance with the following prescribed conditions. Sorbitan monooleate is produced by the esterification of sorbitol with commercial oleic acid. Sorbitan monooleate meets the following specifications.Saponification number of Sorbitan monooleate is 145-160. Hydroxyl number of Sorbitan monooleate is 193-210.Sorbitan monooleate is used or intended for use as follows.Sorbitan monooleate is used As an emulsifier in polymer dispersions that are used in the clarification of cane or beet sugar juice or liquor in an amount not to exceed 7.5 percent by weight in the final polymer dispersion

Source of Sorbitan monooleate: Sorbitan monooleate is produced from oleic acid and sorbitol, a normal fatty acid of vegetable or animal origin. Sorbitan monooleate Function and Features: Sorbitan monooleate has emulsifier and stabilizer properties. Sorbitan mono oleate is metabolised to sorbitol and oleic acid, which are metabolized without side effects. Although mostly vegetable oils are used, the use of animal fats (such as lard) cannot be excluded. Therefore; a number of groups, such as vegetarians, Muslims and Jews who do not eat milk or dairy, as well as meat, should avoid these products. Only manufacturers can give detailed information on the source of fatty acids. Chemically, the fatty acids of vegetable or animal origin are the same

Sorbitan monooleate emulsifier is used as stabilizer for oil based lotions, Sorbitan monooleate emulsifier is used as ointments, Sorbitan monooleate emulsifier is used in textiles as antistat, Sorbitan monooleate is used as lubricant for fabric softener, sweetening agent, Sorbitan monooleate is used as lubricant for food additive, Sorbitan monooleate is used as lubricant for tooth. Sorbitan monooleate soluble in ethanol at 50mg/ml. Sorbitan monooleate Miscible with water,ethanol,isopropanol and ether; Sorbitan monooleate Insoluble in acetone. Sorbitan monooleate is a non-ionic surface active agent; Sorbitan monooleate used as emulsifier, Sorbitan monooleate used as stabilizer, and Sorbitan monooleate used as thickener (foods, cosmetics, and medicines), Sorbitan monooleate used as lubricant and Sorbitan monooleate used as softener in textiles, and Sorbitan monooleate used as surfactant for pharmaceuticals; Sorbitan monooleate used as emulsifier for water-in-oil emulsions;

Moderate risk of over exposureThe European Food Safety Authority (EFSA) has determined that some population groups have a moderate risk of consuming too much E433 - Polyoxyethylene Sorbitan monooleate. To evaluate your exposure to the E433 - Polyoxyethylene Sorbitan monooleate food additive, you can browse our list of products that contain it. See the list of products with E433 - Polyoxyethylene Sorbitan monooleate below. Sorbitan monooleate, ethoxylated 1 - 6.5 moles ethoxylated Sorbitan monooleate is a non-ionic surface active agent; Sorbitan monooleate used as emulsifier, Sorbitan monooleate used as stabilizer, and Sorbitan monooleate used as thickener (foods, cosmetics, and medicines), Sorbitan monooleate used as lubricant and Sorbitan monooleate used as softener in textiles, and Sorbitan monooleate used as surfactant for pharmaceuticals; Sorbitan monooleate used as emulsifier for water-in-oil emulsions; Sorbitan monooleate used as for synthesis in chemical industry, Sorbitan monooleate used as refining and processing metals, and in paints, lacquers, and varnishes industry.

The additive is used in an amount not to exceed 0.70 part per million in sugar juice and 1.4 parts per million in sugar liquor. Sorbitan monooleate is a low HLB surfactant suggested for use as a w/o emulsifier or as an o/w emulsifier for use in cosmetic formulations, oil field chemicals, plastics, household products, coatings and textiles. The liquid Sorbitan monooleate ester explosive grade functions as a low HLB nonionic emulsifier. Sorbitan monooleate is well suited for a broad number of applications including emulsifier in explosives. Sorbitan Monooleate(SMO). Moderate risk of over exposureThe European Food Safety Authority (EFSA) has determined that some population groups have a moderate risk of consuming too much E433 - Polyoxyethylene Sorbitan monooleate. To evaluate your exposure to the E433 - Polyoxyethylene Sorbitan monooleate food additive, you can browse our list of products that contain it. See the list of products with E433 - Polyoxyethylene Sorbitan monooleate below.

Sorbitan monooleate, ethoxylated 1 - 6.5 moles ethoxylated. Sorbitan monooleate is used as a wetting agent, coupling agent and dispersing agent in various products. In cosmetics, pharmaceutical creams, and various other personal care products, Sorbitan monooleate is used as friction modifier and emulsifier. This clear viscous oily liquid is used for ethoxilation. Sorbitan monooleate Sorbitan Monooleate is an Emulsifier class product. Sorbitan Monooleate is a mixture of partial esters of sorbitol and anhydrides and vegetable oleic acid. Sorbitan Monooleate may contain isosorbide esters and free fatty acids. Sorbitan Monooleate Cream-yellowish beaded solid powders. Sorbitan monooleate has a slight characteristic odor. Sorbitan Monooleate is insoluble in water. Sorbitan Monooleate is a Lipophilic surfactant. Usually Sorbitan Monooleate is used as an arad emulsifier with polysorbates. Also Sorbitan Monooleate is used to modify the crystallization of oils. Sorbitan Monooleat Used in light pastry products. Sorbitan Monooleate Used in light pastry products, decoration and coating materials. Sorbitan Monooleat Used in Baker`s yeast. Used in Sorbitan Monooleate Oil emulsions. Sorbitan Monooleate Used in milk and cream mixtures. Sorbitan Monooleat Jelly is used in marmalade. Sorbitan Monooleat Used in Tahini halva varieties.

Sorbitan Monooleate Used in cocoa based confectionery. Sorbitan Monooleat Used in Chocolates. Sorbitan Monooleate Used in liquid fruit and herbal mixtures. Sorbitan Monooleat Used in Desserts. Sorbitan Monooleate Used in sugar based confectionery. Sorbitan Monooleate Used in food supplements. Sorbitan Monooleat Sorbitan monooleate is determined by the practitioner according to the intended use and the desired product. Sorbitan Monooleate Emulsifier. Used for emulsion of Sorbitan Monooleate W / O phases. Sorbitan Monooleate Cream and Lotion is used. Sorbitan Monooleat has a characteristic odor.

Sorbitan monooleate may be safely used in accordance with the following prescribed conditions. Sorbitan monooleate is produced by the esterification of sorbitol with commercial oleic acid. Sorbitan monooleate meets the following specifications.Saponification number of Sorbitan monooleate is 145-160. Hydroxyl number of Sorbitan monooleate is 193-210.Sorbitan monooleate is used or intended for use as follows.Sorbitan monooleate is used As an emulsifier in polymer dispersions that are used in the clarification of cane or beet sugar juice or liquor in an amount not to exceed 7.5 percent by weight in the final polymer dispersion

Sorbitan Monooleate is an Emulsifier class product. Sorbitan Monooleate is a mixture of partial esters of sorbitol and anhydrides and vegetable oleic acid. Sorbitan Monooleate may contain isosorbide esters and free fatty acids. Sorbitan Monooleate Cream-yellowish beaded solid powders. Sorbitan monooleate has a slight characteristic odor. Sorbitan Monooleate is insoluble in water. Sorbitan Monooleate is a Lipophilic surfactant. Usually Sorbitan Monooleate is used as an arad emulsifier with polysorbates. Also Sorbitan Monooleate is used to modify the crystallization of oils. Sorbitan Monooleat Used in light pastry products. Sorbitan Monooleate Used in light pastry products, decoration and coating materials. Sorbitan Monooleat Used in Baker`s yeast. Used in Sorbitan Monooleate Oil emulsions. Sorbitan Monooleate Used in milk and cream mixtures. Sorbitan Monooleat Jelly is used in marmalade. Sorbitan Monooleat Used in Tahini halva varieties. Sorbitan Monooleate Used in cocoa based confectionery. Sorbitan Monooleat Used in Chocolates. Sorbitan Monooleate Used in liquid fruit and herbal mixtures. Sorbitan Monooleat Used in Desserts. Sorbitan Monooleate Used in sugar based confectionery.

Sorbitan Monooleate Used in food supplements. Sorbitan Monooleat It is determined by the practitioner according to the intended use and the desired product. Sorbitan Monooleate Emulsifier. Used for emulsion of Sorbitan Monooleate W / O phases. Sorbitan Monooleate Cream and Lotion is used. Sorbitan Monooleat has a characteristic odor. At the same time, the mixture of polyoxyethylene sorbitan monooleate palmitate (Tween 40) and Sorbitan monooleate (Span 80) provides durable emulsion formation. Transfer about 25 g of the sample, accurately weighed, into a 500-ml roundbottom flask, add 250 ml of alcohol and 7.5 g of potassium hydroxide, and
mix. Connect a suitable condenser to the flask, reflux the mixture for 1 to 2 h, and then transfer to an 800-ml beaker, rinsing the flask with about 100 ml of water and adding Sorbitan monooleate to the beaker. Heat on a steam bath to evaporate the alcohol, adding water occasionally to replace the alcohol, and evaporate until the odour of alcohol can no longer be detected, Adjust the final volume to about 250 ml with hot water.

Neutralize the soap solution with dilute sulfuric acid (1 in 2), add 10% in excess, and heat, while stirring, until the fatty acid layer separates. Transfer the fatty acids to a 500-ml separator, wash with three or four 20-ml portions of hot water to remove polyols, and combine the washings with the original aqueous polyol layer from the saponification. Extract the combined aqueous layer with three 20-ml portions of petroleum ether, add the extracts to the fatty acid layer, evaporate to dryness in a tared dish, cool, and weigh. Neutralize the polyol solution with a 1 in 10 solution of potassium hydroxide to pH 7 using a suitable pH meter. Evaporate this solution to a moist residue, and separate the polyols from the salts by several extractions with hot alcohol. Evaporate the alcohol extracts on a steam bath to dryness in a tared dish, cool, and weigh. Avoid excessive drying and heating. Assay another 25 g sample by the Sorbitan Ester Content procedure to determine percent sorbitan ester.

The invention discloses a preparation technique of sorbitan monooleate, which comprises the following steps: sequentially adding oleic acid, sorbitol and a composite catalyst into a vacuum reaction kettle, and starting a material circulating pump when the material temperature is greater than 165 DEG C; reacting for 8.5-9 hours, taking samples every other 15-30 minutes, observing the product transparency, and discharging the heat-conducting oil when the product is transparent; and cooling to 80-90 DEG C, and removing the vacuum of the reaction kettle to obtain the sorbitan monooleate product. The technique is simple and easy to operate, greatly shortens the reaction time and lowers the production cost; by adopting the composite catalyst of sodium hydroxide and high-purity phosphite, the reaction time is shortened, and the production technique is simplified; the product has the advantages of light color, favorable interior regularity, favorable flowability, no need of decolorization and lower cost; and the reaction temperature of the technique is 20-40 DEG C lower than that of the traditional technique, thereby saving the energy.

A kind of preparation technology of sorbitan monooleate. The present invention relates to a kind of preparation technology of sorbitan monooleate. Dehydrating sorbitol monooleate belongs to polyol-based non-ionic surfactant, is commonly used for w/o type emulsifying agent.Due to the surfactivity such as emulsification, dispersion of excellence, the feature such as the higher and micella Gibbs free energy of nontoxic, nonirritant, low volatilization, micelle-forming concentration is lower in addition, so Sorbitan monooleate has purposes widely: the medicine processing being mainly used in various formulation, the solubilizing agent of injection liquid and oral liquid, emulsifying agent, the disintegrating agent of tablet, capsule dispersion agent, ointment emulsifying agent and matrix, Sorbitan monooleate is also emulsifying agent the most frequently used in foodstuffs industry level.The synthesis of current home products also has a lot of defect with production.

The object of the invention is to prior art defect, a kind of preparation technology of sorbitan monooleate is provided. Object of the present invention can be achieved through the following technical solutions: A preparation technology for sorbitan monooleate, described technique specifically comprises the following steps: successively oleic acid, sorbyl alcohol, composite catalyst are dropped into vacuum reaction still, steam is warming up to 160 DEG C, and vacuum tightness remains on 0.07-0.09MPa, and the heat-up rate of material temperature rises to 155-160 DEG C in 2-2.5h, when material temperature is greater than 165 DEG C, open Matter Transfer pump; steam off, use thermal oil instead and heat up, now thermal oil temperature controls at 220-240 DEG C, when material temperature reaches 190 DEG C, thermal oil temperature is brought up to 240-260 DEG C; material final temperature controls at 210-220 DEG C, and vacuum degree control is at 0.09-0.098MPa; react 8.5-9h, start, every 15-30min sampling, to see product transparency, after product is transparent, release thermal oil, cooling to material temperature is 80-90 DEG C, breaks reactor vacuum, obtaining sorbitan monooleate product, controlling at 9-10h from being warmed up to the cooling end time.

Dehydration reaction due to sorbyl alcohol is actually very complicated, and resultant is the mixture of multiple compounds, and therefore, its esterification reaction product is also diversified.Product is mono fatty acid ester mainly, but also containing complicated products such as di fatty acid ester, tri-fatty acid ester, four fatty acid esters.If not exclusively, when having water to exist, the reversed reaction of esterification also can be there is, will seriously reduce the content of ester in product in dehydration.And the too high local superheating that can make of dehydration temperaturre causes carbonization, the method for lesser temps, condition of high vacuum degree therefore should be taked to dewater, the problem that should be noted that prevents punching material.Esterification should be carried out under certain high temperature, to obtain the mixture of the higher sorbitan ester of content.Esterification time is short, and esterification is incomplete, and product acid number is high; Esterification time increases, and acid number declines; If the reaction times is long, the decomposition reaction of ester increases, and shows acid number and is gone up on the contrary by low.Therefore, the processing condition that certain temperature and time is obtained high-quality Arlacel-80 key are controlled.

The effects of a typical commercial anti-agglomerant, sorbitan monooleate (Span80), on the interactions between cyclopentane (CyC5) hydrate particles and water droplets were investigated using a micromechanical force (MMF) apparatus. The concentration of Span 80 in CyC5 was ranged from 0.01 wt.% to 1wt.%, and the experimental temperature was set at 1.5°C and 7°C, respectively. The results indicate that the absorption of Span 80 on the droplet surface can render the interfaces more stable, preventing hydrate agglomeration. When the preload/contact force exceeds the strength of the interface (<~10μN), the droplet ruptures, and the following interaction behavior depends on the subcooling significantly. At the lower temperature (1.5°C), the water in the droplet can spontaneously spread over the whole hydrate particle due to the significant reduction in water-CyC5 interfacial tension. Meanwhile, the water on the hydrate particle surface converts into hydrate rapidly. In this case, Span 80 actually accelerates the agglomeration process and grants much shorter time to allow the external force to separate the water droplet and hydrate particle. At the higher temperature (7°C), the capillary bridge dominates the interaction behavior. The addition of Span80 can reduce the capillary force through reducing the water-CyC5 interfacial tension effectively. The measurements and observations in present work can provide new insight into the mechanism of Span 80 on inhibiting hydrate agglomeration. The fatty acid moiety of sorbitan monostearate has a coefficient of digestibility of 53.3% (Oser & Oser, 1957b).

Experiments with 14C-labelled sorbitan monostearate showed that at least 90% of the emulsifier, when fed to rats in oily solution, was hydrolysed to stearic acid and anhydrides of sorbitol. A significant fraction of the administered 14C was expired as CO2. When the labelled material was administered in water, 16-25% was recovered in the urine; when Sorbitan monooleate was given in oil, 44-66% was recovered. Of the ingested radioactivity, 3-7% was recovered in the tissues 48 hours after feeding. Fractionation of the carcass fats showed that 14C was incorporated into fatty acids, glycerol and a residue that did not sublime (Wick & Joseph, 1953).

Sorbitan trioleate prepared with a 14C-label in the sorbitol or the oleate moieties was administered orally to rats. After administration of sorbitan 14C-trioleate, the appearance of 14C-CO2 in the expired air reached a peak at about 6 hours and amounted to 30-35% of administered label. The faeces and gastrointestinal tract contained about 42% of the 14C-label, indicating that Sorbitan monooleate was incompletely absorbed, and 3% appeared in the urine; the liver contained about 3% and the carcass about 22%. After administration of the 14C-sorbitan-labelled ester, less than 2% of the label was recovered as 14C-CO2; the proportions not absorbed were 24% from a water emulsion and 37% from a solution in oil; the proportions recovered of that absorbed were as follows: urine, 88%; expired air, 5%; liver, 1%; carcass, 6% (Treon et al., 1967).

In this study, sorbitan monooleate was used to pretreat lignite prior to flotation tests. First, the lignite sample and water were mixed with 0%, 0.5%, 1%, 1.5% and 2% (on the basis of the weight of the coal) of sorbitan monooleate to produce five types of flotation slurries. FTIR, XPS and SEM were used to analyze the surface properties of the lignite sample. The flotation tests were used to indicate the improvements in flotation of lignite after the sorbitan monooleate pre-treatment. FTIR and XPS results showed that there are many oxygenated functional groups in lignite such as carboxyl group and hydroxyl groups. Furthermore, SEM results showed that there are many holes on the lignite surface. These holes will be filled with water in the flotation pulp. The flotation results indicated that sorbitan monooleate can improve the lignite flotation at low concentrations of sorbitan monooleate. However, the flotation behavior of lignite deteriorated at higher concentrations of sorbitan monooleate.