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O-M-575

Revision A, September 12, 1975

Base Document Only

MORPHOLINE, TECHNICAL



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Superseded By: A-A-59665

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Description / Abstract:

Morpholine is intended for use as a corrosion inhibitor in heating plants where boiler feedwater is deaerated. It volatilizes with steam, circulates through the lines, and returns with the condensate to the boiler. Morpholine neutralizes acidity resulting from dissolved carbon dioxide and maintains alkalinity to inhibit corrosion in the boiler, pipes, and radiators.

Selection of class may depend upon environmental conditions of storage and handling. To aid selection of class, physical properties are provided in table IV below. TABLE IV. Physical properties of morpholine
Property                      Class 1   Class 2   Class 3
--------------------------------------------------------------

Specific gravity @ 20°/20° C.     1.002     1.022     1.032
Freezing point, C°               −3       −18       −27
Flash point (TOC), C°            38        46        88