26658-19-5
Sorbitan Tristearate
CAS: 26658-19-5
Molecular Formula: C60H114O8
26658-19-5 - Names and Identifiers
| Name | Sorbitan Tristearate |
| Synonyms | Span 65 SPAN 65 Span-65 SPAN(R) 65 SPAN(TM) 65 Emulsifier S-65 emulsifier(s65) EMALEX EG-2854-S SORBITAN TRISTEARATE Sorbitan Tristearate SORBITANE TRISTEARATE span (R) 65 hlb-value 2.1 POE(4) SORBITAN TRISTEARATE sorbitan tristearate (span 65) [2,3,5-trihydroxy-4,6-di(octadecanoyloxy)hexyl] octadecanoate [(2R,3S,4R)-2-[1,2-di(octadecanoyloxy)ethyl]-4-hydroxy-tetrahydrofuran-3-yl] octadecanoate |
| CAS | 26658-19-5 |
| EINECS | 247-891-4 |
| InChI | InChI=1/C60H116O9/c1-4-7-10-13-16-19-22-25-28-31-34-37-40-43-46-49-56(63)67-52-54(61)59(66)60(69-58(65)51-48-45-42-39-36-33-30-27-24-21-18-15-12-9-6-3)55(62)53-68-57(64)50-47-44-41-38-35-32-29-26-23-20-17-14-11-8-5-2/h54-55,59-62,66H,4-53H2,1-3H3 |
| InChIKey | HWKVXMKNXIZHLF-LLPUSWRMSA-N |
26658-19-5 - Physico-chemical Properties
| Molecular Formula | C60H114O8 |
| Molar Mass | 963.54 |
| Density | 0.98 g/cm3 (25℃) |
| Melting Point | 53°C |
| Boling Point | >100°C (1013 hPa) |
| Flash Point | 150°C |
| Vapor Presure | <1.4 hPa (20 °C) |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.478 |
| MDL | MFCD00151165 |
| Physical and Chemical Properties | This product is yellow waxy solid, relative density 1.001, melting point 46~48 deg C, HLB value of 2.1. Slightly soluble in isopropanol, tetrachloroethylene, xylene. |
| Use | Used as emulsifier, lubricant, wetting agent, dispersant, thickener, etc |
26658-19-5 - Risk and Safety
| WGK Germany | 1 |
| HS Code | 3824 99 93 |
| Toxicity | LD50 orally in Rabbit: > 15900 mg/kg |
26658-19-5 - Upstream Downstream Industry
| Raw Materials | Sorbitol Stearic acid |
26658-19-5 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| identification test | solubility is hardly soluble in toluene, ether, carbon tetrachloride and ethyl acetate; Can be dispersed in petroleum ether, mineral oil, vegetable oil, acetone and dicylethane; Insoluble in water, methanol and ethanol. Measured according to O-42 method. The freezing point is 47~50 ℃. Measured by conventional methods. |
| content analysis | accurately weigh about 25g of sample, move into a 500ml round bottom flask, add 250ml of ethanol and 7.5g of potassium hydroxide, and mix. The condenser is connected, heated and refluxed for 1~2h, moved into an 800ml beaker, rinsed the flask with 100m1 water, and incorporated into the beaker. The ethanol is heated and evaporated in the steam bath, and water is added at the right time to replace the ethanol, and the ethanol odor cannot be detected for a long time. Add hot water to a total volume of about 250ml, neutralize the saponification solution with 1:2 dilute sulfuric acid, add more 10%, heat and stir until the fatty acid layer is precipitated. The fatty acid is transferred into a 500m1 separatory funnel, and the polyol is washed out with hot water 3~4 times (20 m1 each time), and the lotion and the original saponified polyol water layer are combined. Each 20m1 is divided into three times with petroleum ether extraction of the combined water layer, the extraction liquid is added to the fatty acid layer, transferred to a weighed evaporator for evaporation to dry, cooling, weighing, is the fatty acid content. In addition, 1:10 potassium hydroxide solution was used to neutralize the polyol solution to pH 7 (measured by pH meter). The solution is evaporated to a wet slag, and the polyol is separated from the salt with hot ethanol in several times. The ethanol extract (contained in a weighed evaporator) is evaporated in a steam bath to dry, cooled, and weighed. Excessive drying and heating should be avoided. It is the polyol content. Another 25g of sample was taken, and the content of sorbitan ester was determined according to the method of "sorbitan ester monolaurate (10042). |
| toxicity | ADI O ~ 25 mg/kg(FAO/WH0,2001). |
| usage limit | GB 2760-96(g/kg): beverage turbidity 0.05; Cream, hydrogenated vegetable oil, instant coffee, dry yeast, 10.0. FAO/WHO(1984): margarine, chocolate and sandwich chocolate, 10 g/kg (total emulsifier 15 g/kg). |
| use | this product is used as emulsifier in medicine, cosmetics, textile, paint and explosive industries, textile oil agent, emulsifier in oil deep well weighting mud, dispersant in paint industry, cosolvent and rust inhibitor in petroleum products. as W/o food emulsifier, used alone or mixed with twain -60, twain -80, twain -65. China stipulates that it can be used for cream, hydrogenated vegetable oil, instant coffee and dry yeast, with a maximum usage of 10.0 g/kg. The maximum usage in beverage turbidity agent is 0.05 g/kg. Used as emulsifier, lubricant, wetting agent, dispersant, thickener, etc. Non-ionic surfactant |
| Production method | It is formed by dehydration of sorbitol to produce sorbitol anhydride and esterification with excess stearic acid, or by direct heating of sorbitol and stearic acid in the presence of a catalyst to obtain products. put 1 mol sorbitol into the reaction kettle, vacuum heating and dehydration, after dehydration, press into molten stearic acid 3 mol, sodium hydroxide catalyst 1kg. Under the condition of reduced pressure, slowly raise the temperature to 180 ℃ within 2 h, then raise the temperature to 210 ℃ every 1 h, raise the temperature to ℃ after 3 h, keep the temperature at 210 ℃ for 5 h, then raise to 220 ℃, react for 1 h, take samples to measure the acid value, when the acid value reaches 13~15 is qualified, stop esterification. Let stand, cool overnight, remove the lower coking substance, decolorize the upper layer with an appropriate amount of hydrogen peroxide, and finally raise the temperature to 100 ℃, hot press molding, and cool the packaging to be the finished product. |
Last Update：2024-04-09 21:01:54
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View History
26658-19-5
MLN2238
726141-59-9
313973-13-6
1H-Imidazole-4-carboxylicacid,5-amino-2-(1-methylethyl)-,ethylester(9CI)
Methyl 5,6,7,8-tetrahydroimidazo[1,5-a]pyridine-5-carboxylate
Diphylline
UDP-glucose-N-acetylglucosaminyl pyrophosphorylundecaprenol glucosyltransferase
1,2-Benzisoxazole-6-carboxylic acid, 4-hydroxy-3-methyl-, ethyl ester
475289-85-1
MLN2238
726141-59-9
313973-13-6
1H-Imidazole-4-carboxylicacid,5-amino-2-(1-methylethyl)-,ethylester(9CI)
Methyl 5,6,7,8-tetrahydroimidazo[1,5-a]pyridine-5-carboxylate
Diphylline
UDP-glucose-N-acetylglucosaminyl pyrophosphorylundecaprenol glucosyltransferase
1,2-Benzisoxazole-6-carboxylic acid, 4-hydroxy-3-methyl-, ethyl ester
475289-85-1
Raw Materials for 26658-19-5