POLYETHYLENE GLYCOL DIMETHACRYLATE


PRODUCT IDENTIFICATION

CAS NO. 25852-47-5

POLYETHYLENE GLYCOL (400) DIMETHACRYLATE

EINECS NO.  
FORMULA  
MOL WT.  

H.S. CODE

2916.14
TOXICITY  
SYNONYMS Poly(ethylene glycol) Dimethacrylate;
DERIVATION

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

clear liquid

MELTING POINT

 

BOILING POINT > 200 C
SPECIFIC GRAVITY

1.09 - 1.15

SOLUBILITY IN WATER miscible
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 

REFRACTIVE INDEX

 

FLASH POINT > 105 C
STABILITY The stability depends upon dissolved oxygen and MEHQ inhibitor. The presence of oxygen is necessary for inhibitor to prevent polymerization.

APPLICATIONS

Polyethylene glycol is a condensation polymers of ethylene oxide and water with the general formula H(OCH2CH2)nOH, where n is the average number of repeating oxyethylene groups typically from 4 to about 180. The low molecular weight members from n=2 to n=4 are diethylene glycol, triethylene glycol and tetraethylene glycol respectively, which are produced as pure compounds. The low molecular weight compounds upto 700 are colorless, odorless viscous liquids with a freezing point from -10 C (diethylene gycol), while polymerized compounds with higher molecular weight than 1,000 are waxlike solids with melting point upto 67 C for n 180. The abbreviation (PEG) is termed in combination with a numeric suffix which indicates the average molecular weights. One common feature of PEG appears to be the water-soluble. It is soluble also in many organic solvents including aromatic hydrocarbons (not aliphatics).  They are used to make emulsifying agents and detergents, and as plasticizers, humectants, and water-soluble textile lubricants.Polyethylene glycol is non-toxic, odorless, neutral, lubricating, nonvolatile and nonirritating and is used in a variety of pharmaceuticals and in medications as a solven, dispensing agent, ointment and suppository bases, vehicle, and tablet excipient. Lipophilic compounds are ethoxylated ethylene oxide (the monomer of polyglycols) so that the target compounds have hydrophilic (soluble in water). The bifunctionality in one molecule provides the basic properties of surfactants. Fatty acids rather lipophilic (or hydrophobic) 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 fatty acids 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. There are almost infinite ethoxylated compounds. In combination with the average molecular weights and water-soluble property of PEG, the wide range of chain lengths of fatty acids provide identical physical and chemical properties for the proper application selections directly or indirectly.
  • 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 fatty acid compounds are:

Polyethylene Glycol Dimethacrylate, soluble in water, is used as a fuctional comonomer for flexible plastics and as a crosslinking agent between the molecular chains of polymers.

SALES SPECIFICATION

PEG 200 DMA

APPEARANCE

clear liquid

MOL WT.

330

COLOR, APHA

30 max

REFRACTIVE INDEX

1.4595 - 1.4605

FREE ACID

0.05% max (methacrylic acid)

WATER

0.5% max

VISCOSITY, cps

15 at 25 C

INHIBITOR

75 ± 25 ppm (Hydroquinone)

PEG 400 DMA

APPEARANCE

clear liquid

MOL WT.

598

COLOR, APHA

30 max

REFRACTIVE INDEX

1.4640 - 1.4650

FREE ACID

0.1% max (methacrylic acid)

WATER

0.5% max

VISCOSITY, cps

45 at 25 C

INHIBITOR

250 ± 25 ppm (Monomethyl Ether Hydroquinone)

PEG 600 DMA

APPEARANCE

clear liquid

MOL WT.

770

COLOR, APHA

35 max

REFRACTIVE INDEX

1.4650 - 1.4660

FREE ACID

0.2% max (methacrylic acid)

WATER

0.5% max

VISCOSITY, cps

67 at 25 C

INHIBITOR

1000 ± 100 ppm (Monomethyl Ether Hydroquinone)

TRANSPORTATION

PACKING 200kgs in drum
HAZARD CLASS  
UN NO.

 

OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26-36/37