Equipment and facilities

BAM-Test for investigating the chemical resistance of chlorinated hydrocarbons (CHC) against aluminium

Runaway rection of a non-stabilised chlorinated hydrocarbon with aluminium (enlarged picture)

During the degreasing process of aluminium or aluminium alloy with non-stabilised CHC exothermic polycondensation reactions under dechlorination of the CHC can be initiated. To avoid this exothermic reaction stabilised chlorinated hydrocarbons are used.

BAM offers a self-developed examination method that determines both the stability of the stabilised original CHC and the stability of chlorinated hydrocarbons recycled by destillation. The recycled solvents may be reused for degreasing aluminium or aluminium alloys under controlled reprocessing treatment.

Technical Data


Apparatus	Three-necked-flask, reflux condenser, tempering bath
Sample	100 ml fresh CHC or distilled CHC
Aluminium component	Al (thin leaves with defined dimension) and aluminium chloride
Simulation of organic contamination by	zinc stearate or oleic acid
Test procedure	18 h under reflux conditions respectively up to the start of the exothermic reaction fresh CHC with Al component according to 1.) + zinc stearate according to 1.) + oleic acid destilled CHC with Al component

BAM Equipment and facilities | Chemical Process Safety

2012-01-24

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