Ethylene glycol solution magnesium corrosion

These results indicate that pure ethylene glycol is almost inert to magnesium and the corrosion of magnesium in an ethylene glycol solution is closely related to the water content of the solution. 

Corrosion rate of pure magnesium in various concentrations of ethylene glycol solution for 2 weeks [27],... 

The 2 week average corrosion rates of pure magnesium in 33 vol.% of ethylene glycol solution with various additions of Mg(N03)2 and Mg(OH>2. 

Magnesium alloys should have a similar corrosion behaviour to that of pure magnesium in an ethylene glycol solution. This has been eonfirmed by Fekry and Fatayerji s systematic study [30], which is briefly deseribed as follows. 

Although the corrosion of pure magnesium in commercial coolants has been reported [9,31], in practice, an engine block cannot be made of pure magnesium, and the coolant cannot be pure ethylene glycol solution only. Therefore, it is important to understand the corrosion behaviour of magnesium alloys in commercial coolants. 

The likely mechanism of the inhibitive effect of KF on AM-SCl is similar to that for pure magnesium and AZ91D in a fluoride-containing ethylene glycol solution, i.e. fluorides react with magnesium in the matrix of AM-SCl alloy, forming a low-solubility magnesium fluoride product which deposits on the alloy surface and prevents further corrosion attack to the alloy. 

E. Slavcheva, G. Petkova, P. Andreev, Inhibition of corrosion of AZ91 magnesium alloy in ethylene glycol solution in presence of chloride anions . Materials and Corrosion 56 (2005) 83-87. 

PHOSPHORIC ACID, DIMETHYL ESTER, WITH (E)-3-HYDROXY-A, A -DIMETHYLCROTONAMIDE (141-66-2) CsHisNOjP May react violently with antimony(V) pentafluoride. Inconqiatible with nitrates. Corrosive to cast iron, mild (low carbon) steel, brass, and stainless steel 304. Slow hydrolysis in water. Decomposes in storage at temperatures above 135°F/55°C. Incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, glycols, isocyanates, ketones, lead diacetate, magnesium, maleic anhydride, nitrates, nitromethane, phenols, silver nitrate, vinyl acetate. 

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