In the manufacturing process of metal components contaminants such as oil and grease get commonly deposited on metal surfaces and crevices. Achieving a clean dry exterior free from impurities is essential for further processing. Metal components are degreased in a large spectrum of industries including the engineering industries, heat-treatment plants, precious metal coating,cable manufacture, cleaning of delicate instruments and the operation and maintenance (O&M) sector.
GTZ-Proklima identified a range of alternatives, some of which are already in common use by industries. Their suitability has been confirmed through industrial trials. The list of solvents, their properties and EHS aspects are given in detail in the Technical advisory mentioned at the bottom of this page.
It is also possible to create blends of solvents to acquire the required properties. These blends are called Azeotropic mixtures. A suitable blend could be suggested based on specific requirement.
Petrol and Trichloroethylene (TCE) are other cleaning agents used by some industries. Their use is strongly discouraged because of the inherent cancer risk.
HAZARDS TO CONSIDER
Every substance has limitations. While every solvent is toxic to a certain extent, the harmfulness varies from one substance to another. A given substance may be hazardous on skin contact, be a fire hazard, harm the environment and / or cause cancer (i.e. red category). Knowledge on the hazard ratings will help industries to take appropriate preventive measures and detailed information on hazards and control measures are provided in the TA.
A detailed technical document titled "Selection and Safe Use of Alternatives to CTC – Metal Degreasing" has been uploaded for free download.
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Though all care has been taken while researching and compiling the information
presented above, GTZ Proklima accepts no liability for its accuracy. The
reader is advised to confirm its correctness prior to use or purchase of any
GTZ Proklima makes no claim in respect of the suitability of any substance as
substitute for CTC in any specific industrial process. Suitability remains to
be verified through trials with due consideration of health and safety
Information provided here does not constitute an endorsement or recommendation
of any product by GTZ Proklima. While preference is given to non-proprietary
products information on selected proprietary products may be included if they
appear to have a better environment, health and safety performance or if they
are already widely adopted by the industry.