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PEG 300/400/4000 (Polyethylene Glycol)
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PEG 300/400/4000 (Polyethylene Glycol)

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PEG-4000

Test Item

Test Method

Unit

Spec(Min)

Spec(Max)

Result

Molecular Weight

HPC METHOD

-

3,000

4,000

3,765

Appearance(50)

VISUAL



Flake

Flake

Color(50)

ASTM D 1209

APHA


80

6

pH

ISO 4316

-

5.5

7.5

7.1

Hydroxyl Value

ASTM D 4252

mgKOH/g

28.0

37.4

29.8

Water Contents

ASTM D 1744

wt%


0.50

0.08

Dioxane

ICI C&P/SC/44

ppm



<1

Free EO

ICI C&P/SC/44

ppm


5.0

 

<1.0

 

PROPERTIES / APPLICATIONS :-
PEG - 4000 is a high molecular weight polymer of ethylene oxide and is a blend of polymers with different degrees of polymerisation . Like all other PEGs , PEG-4000 is readily soluble in water . So water can be the most economical solvent for this , apart from other organic solvents .PEG-4000 acts as binder & dry lubricant due to its laminar structure and therefore can be used in the manufacture of pills and tablets for certain pharmacutical preparations . In rubber industry , PEG-4000 can be used as a mould release agent . A solution of PEG-4000 of 3-20 % concentration can be coated or sprayed into the hot mould cavities , thus enabling the solvent to evaporate,the solution is either dried by applying heat or allowed to dry evaporation of solvent.

Other applications of PEG-4000 include as wetting agents to inhibit soap cracking , as binder for facial makeup , as antidusting agent for afterbath talcum powder , lubricant in paper industry , as a tyre mounting agent , as an additive in grease , as plasticiser in synthetic resin , as enhancer of thermal stability in adhesive preparations , as an additional component of galvanisation bath etc. for copper & nickel electroplating of steel and iron parts. PEGs being non ionic products , facilitate the even distribution of electrolytes.

PEG-4000 dissolved in lower glycols in place of paraffin wax are used for enbalming of histological and other medical specimens.