PEG 300/400/4000 (Polyethylene Glycol)

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.