1338-39-2
sorbitan monolaurate
CAS: 1338-39-2
Molecular Formula: C18H34O6
1338-39-2 - Names and Identifiers
| Name | sorbitan monolaurate |
| Synonyms | Span-20 Span?20 Arlasel 20 emsorb2515 Span(rg 20 EmulsifierS20 radiasurf7125 emulsifier(s20) Emulsifier S-20 sorbitan laurate Span?20 solution span(R) 20 solution sorbitan monolaurate span (R) 20 hlb-value 8.6 Sorbitan Monolaurate (Span-20) 3,6-anhydro-1-O-dodecanoylhexitol 1,4-anhydro-6-O-dodecanoyl-D-glucitol [2-[(2R,3S,4R)-3,4-dihydroxytetrahydrofuran-2-yl]-2-hydroxy-ethyl] dodecanoate |
| CAS | 1338-39-2 |
| EINECS | 215-663-3 |
| InChI | InChI=1/C18H34O6/c1-2-3-4-5-6-7-8-9-10-11-16(21)23-13-15(20)18-17(22)14(19)12-24-18/h14-15,17-20,22H,2-13H2,1H3/t14-,15+,17+,18?/m0/s1 |
1338-39-2 - Physico-chemical Properties
| Molecular Formula | C18H34O6 |
| Molar Mass | 346.46 |
| Density | 1.032g/mLat 25°C(lit.) |
| Boling Point | 401.18°C (rough estimate) |
| Flash Point | >230°F |
| Water Solubility | Soluble in 2-ethoxyethanol, ethanol and methanol. Not miscible or difficult to mix in water. |
| Solubility | Soluble in mineral oil, cottonseed oil, methanol, ethanol, isopropanol and ethylene glycol, insoluble in water and propylene glycol |
| Appearance | Yellow oily liquid |
| Specific Gravity | 1.032 |
| Color | Clear amber colour |
| Merck | 14,8724 |
| Storage Condition | Store below +30°C. |
| Sensitive | Easily absorbing moisture |
| Refractive Index | n20/D 1.474(lit.) |
| MDL | MFCD00005365 |
| Physical and Chemical Properties | Amber viscous liquid or beige to brownish yellow waxy solid, with slightly special odor. When the temperature is higher than the melting point, it is soluble in methanol, ethanol, toluene, ethyl ether, ethyl acetate, aniline, petroleum ether and carbon tetrachloride, etc., insoluble in cold water, but can be dispersed in hot water. The HLB value was 8.6. Rat LD50 10 g/kg,Adl 0~25 mg/kg(FAO/WHO,1994). |
| Use | Used as emulsifier, wetting agent |
1338-39-2 - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | WG2920000 |
| FLUKA BRAND F CODES | 10-23 |
| TSCA | Yes |
| HS Code | 34021300 |
| Toxicity | LD50 orally in Rabbit: 33600 mg/kg |
1338-39-2 - Upstream Downstream Industry
| Raw Materials | Sorbitol Lauric acid |
1338-39-2 - Reference
| Reference Show more | 1. Cui, Mengnan, et al. "Effect of monoglyceride content on the solubility and chemical stability of β-carotene in organogels." LWT 106 (2019): 83-91.https://doi.org/10.1016/j.lwt.2019.02.042 2. Cui, Mengnan, et al. "Effect of monoglyceride content on the solubility and chemical stability of β-carotene in organogels." LWT 106 (2019): 83-91.https://doi.org/10.1016/j.lwt.2019.02.042 3. [IF=4.952] Mengnan Cui et al."Effect of monoglyceride content on the solubility and chemical stability of β-carotene in organogels."Lwt Food Sci Technol. 2019 Jun;106:83 4. [IF=4.952] Ruoning Zhang et al."Physicochemical stability of oleogel-in-water emulsions loaded with β-carotene against environmental stresses."Lwt Food Sci Technol. 2022 Feb;155:112965 |
1338-39-2 - Nature
Open Data Verified Data
an emulsion of amber or tan liquid dispersed in water. It can be miscible with organic solvents and oils, and has good emulsification, penetration, dispersion and decontamination properties. It is a water-in-oil surfactant.
Last Update：2025-06-10 22:55:16
1338-39-2 - Preparation Method
Open Data Verified Data
with sorbitol as raw material, after dehydration and ring closure to form sorbitol, and then esterification with lauric acid.
Last Update：2022-01-01 09:28:37
1338-39-2 - Standard
Authoritative Data Verified Data
This product is Sorbitan and monolauric acid ester mixture, sorbitol dehydration, in alkaline catalyst, and lauric acid esterification and prepared; or from sorbitol and lauric acid in 180 ~ 280T: under the direct esterification of the system.
Last Update：2024-01-02 23:10:35
1338-39-2 - Trait
Authoritative Data Verified Data
- This product is light yellow to yellow oily liquid with slight abnormal odor.
- This product is slightly soluble in ethyl acetate and insoluble in water.
acid value
The acid value of this product (General 0713) is not greater than 8.
saponification value
The saponification value of this product (General rule 0713) is 158~170 (saponification time 1 hour).
hydroxyl value
The Hydroxyl value of this product (General 0713) is 330~358.
iodine value
The iodine value of this product (General 0713) is not more than 10.
peroxide value
The peroxide value of this product (General 0713) is not greater than 5.
Last Update：2022-01-01 11:21:06
1338-39-2 - Introduction
Non-ionic surfactants, emulsifiers, lubricants, desiccants, gas chromatography stationary solutions, separation and analysis of oxygenates.
Last Update：2022-10-16 17:13:27
1338-39-2 - Differential diagnosis
Authoritative Data Verified Data
take about 2g of this product, put it in a 250ml flask, add 100ml of ethanol and potassium hydroxide 3. 5G, mix well, heat reflux for 2 hours, add about 100ml of water, transfer to 250ml beaker while hot, put evaporation on water bath and continue to add water, continue to evaporate until no ethanol odor, finally, heat 100ml of water, slowly add sulfuric acid solution (1-2) Dropwise while hot to Neutral litmus paper, record the consumed volume, continue to add sulfuric acid solution (1-2) Dropwise (About 10% of the consumed volume as described above), the liquid in the lower layer was clarified by standing. Transfer the above solution to a ML separatory funnel, extract with n-hexane for 3 times, 1 0M l each time, discard the n-hexane layer, take the water layer solution, and adjust the p H value to 7 with 10% potassium hydroxide solution. 0, water bath evaporation to dryness, the residue (if necessary, the residue is triturated) plus anhydrous ethanol 150ml, stirred with a glass rod, boiled in a water bath for 3 minutes, the above solution was placed in a funnel covered with diatomite, filtered, the solution was evaporated to dryness, and the residue was dissolved with 2m l of methanol as a test solution. In addition, 3 3 m g and 1 of isosorbide were taken respectively, 4-to water sorbitol 25mg and sorbitol 25mg, plus methanol 1ml dissolved as a reference solution. According to the thin layer chromatography (General 0502) test, absorb 2 ml of each of the above two solutions, respectively point on the same silica gel G thin layer plate, with acetone-glacial acetic acid (50 : 1) as the developing solvent, expand, take out, dry, spray sulfuric acid solution (1 - 2) to just wet, immediately at 200T: heat until the spots are clear, cool, immediately view. The position and color of the spots of the test solution should be the same as that of the control solution.
Last Update：2022-01-01 11:21:07
1338-39-2 - Safety
Open Data Verified Data
non-toxic, odorless. O ADI ~ 25mg/kg. Rat acute oral LDso: 3700mg/kg.
Last Update：2022-01-01 09:28:38
1338-39-2 - Exam
Authoritative Data Verified Data
fatty acid composition
take this product O .lg, put in 25ml Erlenmeyer flask, add 0 .2ml of 5m o l/L sodium hydroxide methanol solution, shake to dissolve, heat reflux for 30 minutes, add 2ml of 14% boron trifluoride methanol solution along the condenser, heat reflux for 30 minutes, add 4ml of n-heptane along the condenser, after heating and refluxing for 5 minutes, cool, add saturated gasification sodium solution and shake for 15 seconds, add saturated gasification sodium solution to the neck of the bottle, mix well, stand and layer, take 2ml of the upper layer of liquid, wash with water for 3 times, 2ml each time, take the upper layer of liquid anhydrous sodium sulfate drying, as a test solution; Respectively precision weigh the following appropriate amount of fatty acid methyl ester reference, dissolve and dilute with n-heptane to make methyl caproate O per 1 m l. lmg, methyl octanoate 0.7mg, methyl decanoate 0.5mg, methyl laurate 4.0mg, methyl myristate 2.0mg, methyl palmitate l.Omg, methyl stearate 0.5mg, methyl oleate l.Omg, methyl linoleate 0 .2M g of mixed control solution (1), take l. O t n l, put in a 10m volumetric flask, dilute to the scale with n-heptane, shake well, and use as a mixed reference solution (2). According to the gas chromatography (General 0521) test, the capillary column with polyethylene glycol as stationary liquid is used as the column, the initial temperature is 170x:, and the temperature is raised to 23 0 1 at the rate of 2 * C per minute, maintain 10 minutes, injection port temperature 25 0*0, detector temperature 250X: take mixed reference solution (1), (2) Each 1)^ 1, separate injection of human gas chromatograph, record the chromatogram, mixed control solution (1) in each component of fatty acid methyl ester peak separation is not less than 1 .8, the number of theoretical plate according to the calculation of methyl caproate peak shall not be less than 30 0 0 0, and the signal-to-noise ratio of the minimum fatty acid methyl ester peak in the mixed reference solution (2) shall be greater than 5. Take Test Solution 1 ^ 1, inject human gas chromatograph, calculate according to peak area normalization method, containing caproic acid is not more than 1 .0 % , octanoic acid not more than 10.0%; Capric acid is not more than 1 0. 0%; Lauric acid is 40.0% -60.0%; Myristic acid is 14.0% ~ 25.0%; Palmitic acid is 7.0% ~ 1 5 .0%; Stearic acid is not more than 7.0%; Oleic acid is not more than 11.0%; Linoleic acid is not more than 3 .0%.
moisture
take this product, according to the determination of moisture (General rule 0832 first method 1), the water content shall not exceed 1 .5%.
ignition residue
The l .O. g of this product shall be taken for inspection according to law (General Rule 0 8 4 1 ) , and the residue shall not exceed 0.5%.
Heavy metals
The residue left under the item of taking the ignition residue shall not contain more than 10 parts per million of heavy metal when examined by law (General Principles 0821, Law II).
Last Update：2022-01-01 11:21:08
1338-39-2 - Category
Authoritative Data Verified Data
pharmaceutical excipients, emulsifiers and Defoamers.
Last Update：2022-01-01 11:21:08
1338-39-2 - Storage
Authoritative Data Verified Data
sealed storage.
Last Update：2022-01-01 11:21:08
1338-39-2 - Reference Information
| hydrophilic and hydrophilic balance value (HLB value) | 8.6 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | the plate 20 is sorbitol anhydride doidyl ester, amber oily liquid, miscible with organic solvents and oils, and becomes a semi-emulsion solution in water. |
| application | span 20 can be obtained by the reaction of sorbitol anhydride and lauric acid, and can be used as a gas chromatography stationary liquid, tail reducing agent, emulsifier and wetting agent for the support. |
| identification test | solubility can be dispersed in hot and cold water (OT-42). |
| content analysis | accurately weigh about 25g of sample, put into a 500ml round bottom flask, add 250ml of ethanol and 7.5g of potassium hydroxide, and mix. Install condenser and heat reflux for 1~2 hours. Move a 800ml beaker, rinse the flask with 100ml hot water, and incorporate the washed liquid into the beaker. Heat in a steam bath until the ethanol boils, add water from time to time to make up for the amount of alcohol lost, and evaporate until there is basically no ethanol to smell. Adjust the final capacity with hot water about 250ml. Neutralize the saponification solution with 50% sulfuric acid solution, add excess 10%, heat and stir until the fatty acid layer is precipitated. Move into a 500m1 separatory funnel and wash with hot water for 3-4 times, 20ml each time, to wash out polyol and merge polyol liquid. The liquid was extracted 3 times with petroleum ether, 20ml each time. The petroleum ether layer and the fatty acid layer were evaporated in the weighed evaporating dish to dry, cool, and weighed. The polyol solution is neutralized with 10% potassium hydroxide solution to pH 7 and determined with an appropriate pH meter. The liquid is evaporated to a paste and extracted with hot ethanol to separate the polyol. The ethanol extract was transferred to a weighed evaporation dish and evaporated on a steam bath to dryness, cooling and weighing. Excessive drying and heating should be avoided throughout the process. |
| toxicity | ADI 0~25 mg/kg(FAO/WHO,2001). |
| usage limit | GB 2760-2001(g/kg): fruity beverage 0.5; Moon cake 1.5; Vegetable protein beverage 2.0; Ice cream chocolate layer 2.2. |
| use | as a non-ionic food emulsifier, used alone or mixed with Twain -60, Twain -65, Twain -80. China stipulates that it can be used for ice cream and chocolate, with a maximum usage of 2.2 g/kg. The maximum usage in vegetable protein beverage and fruit-flavored beverage is 2.0 g/kg and 0.5 g/kg respectively. The maximum usage in moon cakes is 1.5 g/kg. used as emulsifier, wetting agent used as emulsifier, lubricant, wetting agent, dispersant, thickener, etc. non-ionic surfactant, emulsifier, lubricant, desiccant, gas chromatography stationary liquid, separation and analysis of oxygen-containing compounds. |
| Production method | See sorbitan monostearate |
Last Update：2024-04-11 15:26:44
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Raw Materials for 1338-39-2