POLYOXYETHYLENE SORBITAN LAURATE

PRODUCT IDENTIFICATION
CAS NO. 9005-64-5

POLYOXYETHYLENE SORBITAN LAURATE 

EINECS NO.

 

FORMULA  
MOL WT.  

H.S. CODE

  

TOXICITY

 

DERIVATION

 
SYNONYMS Tween® 20; Polyoxyethylene Sorbitan Monolaurate;
POE (20) sorbitan monolaurate; Polysorbate 20;

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE pale yellow oily liquid
MELTING POINT  
BOILING POINT > 100 C
SPECIFIC GRAVITY

1.09 - 1.14

SOLUBILITY IN WATER

 

pH  
VAPOR PRESSURE  

REFRACTIVE INDEX

 

NFPA RATINGS

  

AUTOIGNITION

 

FLASH POINT

 

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS
Sorbitol is a white, sweetish, hygroscopic, crystalline sugar alcohol of six-carbon. It is found naturally in various berries and fruits. Or it is prepared synthetically by high-pressure catalytic hydrogenation of glucose sugar derived from cornstarch. It melts at 93 to 98 C depending on the form. It is used as a a sweetening agent, food additive, toothpaste, tobacco, toiletries and in cosmetics. It is used for vitamin-C fermentation. It is used as a excipient and intravenous osmotic diuretic in pharmaceutical fields. It is also used in the manufacture of polyethers for polyurethanes and surfactants. The term sorbitan describes the anhydride form of sorbitol, whose fatty acids are lipophilic whereas sorbitol body is hydrophilic. This bifunctionality in one molecule provides the basic properties useful in cleaners, detergents, polymer additives, and textile industry as emulsifiers, wetting agents, and viscosity modifiers. Sorbitan esters are rather lipophilic (or hydrophobic) surfactants exhibiting low HLB (Hydrophilic-Lipophilic Balance) values; having an affinity for, tending to combine with, or capable of dissolving in lipids (or water-insoluble). While, the ethoxylated sorbitan esters are hydrophilics exhibiting high HLB values; having an affinity for water; readily absorbing or dissolving in water. The type of fatty acid and the mole number of ethylene oxide provides diverse HLB values for proper applications.

HLB numbers describe following characterestics:

<10 : Lipid soluble (or water-insoluble)
>10 : Water Soluble
4-8 : Antifoaming
7-11 : Water-in-oil emulsion
12-16 : Oil-in-water emulsion
11-14 : Good Wetting
12-15 : Good detergency
16-20 : Stabilizing

HLB values of sorbitan compounds are:

Surfactants

HLB Value

CAS RN
Sorbitan hexastearate ethoxylate EO 6 mole

3.0

 

Sorbitan isostearate

4.3

 

Sorbitan laurate

8.6

 1338-39-2
Sorbitan monoisostearate ethoxylate EO 20 mole

15.0

 66794-58-9
Sorbitan monolaurate ethoxylate EO 20 mole

16.9

 9005-64-5
Sorbitan monooleate ethoxylate EO 20 mole

15.0

 9005-65-6
Sorbitan monopalmitate ethoxylate EO 20 mole

15.6

 9005-66-7
Sorbitan monostearate ethoxylate EO 20 mole

14.9

 9005-67-8
Sorbitan monstearate ethoxylate EO 6 mole

9.5

 

Sorbitan oleate

4.3

 1338-43-8 

Sorbitan palmitate

6.7

26266-57-9

Sorbitan sesquioleate

4.5

 8007-43-0

Sorbitan stearate

4.7

 1338-41-6
Sorbitan tetraoleate ethoxylate EO 30 mole

11.5

 
Sorbitan tetraoleate ethoxylate EO 40 mole

12.5

 
Sorbitan tetraoleate ethoxylate EO 6 mole

8.5

 63089-86-1
Sorbitan tetrastearate ethoxylate EO 60 mole

13.0

 66828-20-4
Sorbitan trioleate ethoxylate EO 20 mole

11.0

 9005-70-3

Sorbitan trioleate

1.8

 26266-58-0
Sorbitan tristearate ethoxylate EO 20 mole

10.5

 9005-71-4

Sorbitan tristearate

2.1

 26658-19-5
SALES SPECIFICATION

APPEARANCE

 pale yellow oily liquid

HLB VALUE

16.5(c.a)

ACID VALUE

2.5 max

HYDROXYL VALUE

95 - 110

SAP VALUE

40 - 50

COLOR

4 max (Gardner)

TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS

 

UN NO.

 

GENERAL DESCRIPTION OF FATTY ACID
Fatty Acids are aliphatic carboxylic acid with varying length hydrocarbon chains at one end of the chain joined to terminal carboxyl (-COOH) group at the other end. The general formula is CnH2n+1COOH or R-(CH2)n-COOH. Fatty acids are predominantly unbranched and those with even numbers of carbon atoms between 12 and 22 carbons long react with glycerol to form lipids (fat-soluble components of living cells) in plants, animals, and microorganisms. Fatty acids all have common names respectively lilk lauric (C12), MyrIstic (C14), palmitic (C16), stearic (C18), oleic (C18, unsaturated), and linoleic (C18, polyunsaturated) acids. The saturated fatty acids have no double bonds, while oleic acid is an unsaturated fatty acid has one double bond (also described as olefinic) and polyunsaturated fatty acids like linolenic acid contain two or more double bonds. Lauric acid (also called Dodecanoic acid) is the main acid in coconut oil (45 - 50 percent) and palm kernel oil (45 - 55 percent). Nutmeg butter is rich in myristic acid (also called Tetradecanoic acid ) which constitutes 60-75 percent of the fatty-acid content. Palmitic acid(also called Hexadecylic acid ) constitutes between 20 and 30 percent of most animal fats and is also an important constituent of most vegetable fats (35 - 45 percent of palm oil). Stearic acid ( also called Octadecanoic Acid)  is nature's most common long-chain fatty acids, derived from animal and vegetable fats. It is widely used as a lubricant and as an additive in industrial preparations. It is used in the manufacture of metallic stearates, pharmaceuticals, soaps, cosmetics, and food packaging. It is also used as a softener, accelerator activator and dispersing agent in rubbers. Oleic acid (also called octadecenoic acid) is the most abundant of the unsaturated fatty acids in nature.
OTHER INFORMATION