Accession Number:

AD0774293

Title:

Substitution of Tolyltriazole for Mercaptobenzothiazole in Military Coolant Inhibitor Formulations

Descriptive Note:

Interim rept.

Corporate Author:

COATING AND CHEMICAL LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Jamison, Robert G.
• Jordan, Charles B.

Report Date:

1974-01-01

Pagination or Media Count:

27.0

Abstract:

The object of this study was to determine the feasibility of substituting tolyltriazole TT for mercaptobenzothiazole MBT in the corrosion inhibitor package used in military coolants. ASTM Glassware Corrosion Tests D 1384 and Simulated Service Tests D 2570 were conducted on various blends of antifreeze inhibitors with different percentages of sodium tolyltriazole NaTT. The NaTT caused foaming in the tests, but a silicone type antifoam agent was found which controlled the foaming. Results of these tests were correlated with similar tests containing the amount of MBT recommended in coolant specifications 0.4 of the sodium salt. 0.15 was found to be the optimum percentage of NaTT.

Descriptors:

• *CORROSION INHIBITION
• *COOLANTS
• STEEL
• IRON
• BRASS
• ALUMINUM
• SOLDERING
• ETHYLENE GLYCOL
• FOAMING INHIBITORS
• FORMULATIONS
• WATER
• COPPER

Subject Categories:

• Miscellaneous Materials
• Air Conditioning, Heating, Lighting and Ventilating

Distribution Statement:

APPROVED FOR PUBLIC RELEASE