Laboratory tests were made to determine the suitability of sodium chromate inhibitor for ethylene glycol engine coolant. In the presence of light, chromate solutions turned green and dichromate solutions formed greenish precipitates. In the absence of light, little color change was noted.
Following completion of laboratory testing, eight-month long tests were made in automobile cooling systems. Methyl alcohol and ethylene glycol antifreezes were tested separately after addition of chromates. Indications were that chromate inhibitors could be used with ethylene glycol in the absence of light in cases where a laboratory evaluation had been made of operational factors. 5.8.2
Subject
Alcohols,
Precipitates,
Chromium,
Coolants,
Acidity,
Methyl,
Filters,
Sodium,
Corrosion inhibitors,
Color,
Glycol,
Ethylene,
Automotive
© 1960 National Association of Corrosion Engineers
1960
You do not currently have access to this content.
