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Sorbitan Fatty Acid Esters

Sorbitan Fatty Acid Esters

Basic Information

CAS No.: 1338-41-6
Molecular Formula: C24H46O6
Molecular Weight: 430.62

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Product Details

Sorbitan fatty acid esters, also known as Span, are an important class of nonionic surfactants. It appears as a white to yellowish-brown liquid, powder, thin sheet, granule or waxy block, and its properties vary depending on the type of fatty acid it constitutes.


Chemical Properties
PropertyValue

Melting point

54-57 °C(lit.)

Boiling point

464.84°C (rough estimate)

Density

1.00

Vapor pressure

<1.4 hPa (20 °C)

FEMA

3028 | SORBITAN MONOSTEARATE

Refractive index

1.4593 (estimate)

Fp

>230 °F

Storage temp.

Store below +30°C.

Solubility

Practically insoluble, but dispersible in water, slightly soluble in alcohol.

Form

Solid

Pka

13.63[at 20 ℃]

Color

Cream coloured flakes

Odor

Slight

Odor Type

Bland

Water Solubility

Soluble in ethanol (50 mg/ml), isopropanol, mineral oil and vegetable oil. Insoluble in water.

Merck

14,8724

BRN

6820761

Hydrophilic-Lipophilic Balance (HLB)

4.7

Exposure limits

ACGIH: TWA 10 mg/m3; TWA 3 mg/m3

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents.

InChIKey

HVUMOYIDDBPOLL-XGKPLOKHSA-N

LogP

7.66

CAS DataBase Reference

1338-41-6(CAS DataBase Reference)

EPA Substance Registry System

Sorbitan monostearate (1338-41-6)


Safety Information

PropertyValue
Hazard class codes36/37/38
Safety descriptions24/25
WGK Germany1
RTECS numberWG2933500
TSCATSCA listed
HS code34021300
Storage class11 - Combustible solids
Hazardous substances data1338-41-6 (Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 15900 mg/kg


Product Usage

Sorbitan Fatty Acid Esters are a class of nonionic surfactants widely used in food, cosmetics, pharmaceutical, and industrial applications. In the food industry, they function as emulsifiers and stabilizers to improve texture and consistency. In cosmetics, they are commonly used in creams and lotions to enhance smoothness and stability. They are also applied in plastics, textiles, and agrochemicals for dispersing, wetting, and emulsifying purposes. With good biocompatibility and safety, they are highly valued in various formulations.

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