GUANGDONG CARDLO BIOTECHNOLOGY CO., LTD.
Guangzhou Cardio Biotechnology Co,.Ltd.
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Sorbitan Monostearate SPAN60 CAS:1338416
E491 Sorbitan Stearate SPAN60 China Manufacturer For Dry Yeast
Spans are used in the manufacture of food and healthcare products as non-ionic surfactant with emulsifying, dispersing and wetting properties. They 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.
CAS NO: 1338-41-6 EC Number: 215-664-9 Formula: C24H46O6
Generally, sorbitan monostearate can be made from direct esterification of sorbitol and stearic acid. Sorbitan tristearate (E492) would be generated in the production if too much stearic acid is involved.
| Index | Span 20 | Span 40 | Span 60 | Span 80 |
| Appearance (20°C) | Amber sticky liquid | Light yellow wax | Light yellow wax soild | Amber to brown sticky oily liquid |
| Acid value (mg KOH/g) | ≦7 | ≦7 | ≦10 | ≦8 |
| Saponification value (mg KOH/g) | 155~170 | 140~155 | 147~157 | 145~160 |
| Hydroxyl value (mg KOH/g) | 330~360 | 270~305 | 235~260 | 193~210 |
| Residue on ignition (w/%) | ≦0.5 | ≦0.5 | ≦0.5 | ≦0.5 |
| Water (w/%) | ≦1.5 | ≦1.5 | ≦1.5 | ≦2.0 |
| Pb (mg/kg) | ≦2 | ≦2 | ≦2 | ≦2 |
| As ( mg/kg) | ≦3 | ≦3 | ≦3 | ≦3 |
Sorbitan monostearate is used as an emulsifier, commonly together with polysorbates to keep water and oil mixed in many food products.
It is commonly used in instant dry yeast, fat and oil emulsions, desserts, food supplements, cake, spread, margarine, coffee whiteners, and so on.
The following are its main uses and functions in food:
Meanwhile, it can be condensed with ethylene oxide to synthesize polyoxyethylene (20) sorbitan monostearate (polysorbate 60), which is also a food emulsifier.