1338-43-8 Bakery Emulsifiers E491 Span Sorbitan Fatty Acid Esters Yellowish Wax
Span/E491 - Sorbitan Fatty Acid Esters
- Sorbitan Monostearate - Yellowish Wax - Bakery Emulsifier
Sorbitan Fatty Acid Esters (Span 20, 60, 80)
Spans are used in the manufacture of food and healthcare products as non-ionic surfactant with emulsifying, dispersing and wetting properties.
Spans are 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.
Spans can be applied in flour products, dry yeast, margarine, shortening, confectionery, chocolate, coffee whitener and other food processing.
| Index | Sorbitan monolaurate (Span 20) | Sorbitan monopalmitate (Span 40) | Sorbitan monostearate (Span 60) | Sorbitan monooleate (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 |
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