IRO Surfactant » Span-40

Span-40

CAS No.

26266-57-9

Molecular Formula

C22H42O6

Molecular Weight

402.57

Structure Formula

Property

Span-40 is yellowish-brown wax. It is slightly soluble in isopropanol, xylene, and liquid paraffin, insoluble in water, and non-toxic. Odorless. HLB is 6.7.

Specifications

ItemIndex
AppearanceYellowish brown wax
Acid value8mgKOH/g Max.
Saponification value140-150mgKOH/g
Hydroxyl value255-290mgKOH/g
Water2.0% Max.
Melting point45±3℃

Use

Span-40 is used as a dispersant of printing inks and oils, a stabilizer for emulsifying, and an emulsifier for the oil fields.

Packing

In 200kg iron drum/plastic drum.

Handle with care. Span-40 should be stored in a cool, dry, and draughty place. Shelf life is 2 years. Then, Span-40 can still be used if qualified after re-check.

Keywords

Span-40, emulsifier-S40, sorbitan monopalmitate