Mono Ethylene Glycol
Mono Ethylene Glycol
1, 2-Ethanediol/Ethylene Dihydrate
Description
Mono Ethylene Glycol is a colorless, practically odorless, low-volatility, low-viscosity, hygroscopic liquid. It is completely miscible with water and many organic liquids. The hydroxyl groups on glycols undergo the usual alcohol chemistry, giving a wide variety of possible derivatives. Hydroxyls can be converted to aldehydes, alkyl halides, amines, carboxylic acids, ethers, mercaptans, nitrate esters, nitriles, nitrite esters, organic esters, peroxides, phosphate esters and sulfate esters. This chemistry permits ethylene glycol to act as an intermediate in a wide range of reactions. The reactivity and solubility of ethylene glycol provide the basis for many applications. The widespread use of Ethylene Glycol as an antifreeze is based on its ability to lower the freezing point when mixed with water. The physical properties of Ethylene glycol-water mixtures aretherefore extremely important.
Toxicity
Mono Ethylene Glycol, which is extremely toxic. If untreated, ingestion of Ethylene Glycol can be fatal. Initially, patients may be asymptomatic, but Ethylene Glycol is rapidly absorbed (within 1 to 4 hours), and altered mental status and tachypnoea then begin to appear as the ethylene glycol is successively metabolized to very toxic compounds. The progression of toxic effects can be roughly divided into the following three stages, although overlap is possible:
• From 30 minutes to 12 hours after exposure, unmetabolized ethylene glycol produces CNS depression, intoxication, and hyperosmolarity similar to that produced by ethanol.
• From 12 to 48 hours, ethylene glycol metabolites produce severe anion gap metabolic acidosis with compensatory hyperventilation. The acidosis results primarily from an increase in glycolic acid, although glyoxylic, oxalic, and lactic acids also contribute in small part. Calcium oxalate crystals are deposited in the brain, lungs, kidneys, and heart.
• From 24 to 72 hours, acute kidney injury. Can result from the direct renal toxic effects of the ethylene glycol metabolite calcium oxalate monohydrate.
Physical Properties of Mono Ethylene Glycol
Molecular Weight : 62.07
Appearance : Clear, Colourless, Odourless. Hygroscopic
Purity : 99.8%
Acidity (As Acetic Acid) : 10ppm max (W/W)
Chloride (As Cl) : 0.15ppm max (W/W)
Aldehyde (As Formaldehyde) : 10ppm max (W/W)
Specific Gravity at 20°C : 1.115 min
Boiling Point : 196.0°C
Freezing Point : -13.0°C
Electrical Conductivity at 20°C : 1.07 x 10-6 mhos/cm
Refractive Index at 20°C : 1.4306
Solubility in Water : Miscible with water in all proportion
Storage
Mono Ethylene Glycol is hygroscopic in nature and must be stored under condition such that contamination is prevented. The storage temperature is not critical, in that there will be no hazardous condition created by storage of this product at any ambient temperature like to be encountered. At below freezing temperature viscosity of Mono Ethylene Glycol become too high for transfer from the storage containers with the pumps.
Mono Ethylene Glycol should be kept in HDPE barrels/container, non-rusted stainless steel. Hoses should be of Polypropylene or Stainless steel. Barrels must be stored in dry condition away from sources of direct heat/sun light. Opened container/barrels must be reclosed tightly immediately drawing out the glycol.
Packing
It is available in 230kg HDPE barrel/50kg HDPE Jar.
Shelf Life
24 months if stored properly