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In investment casting solvents are used to soften the wax in order to give a better finish the pattern. Concerned sectors include
precision casting foundries and jewellery makers.
POSSIBLE ALTERNATIVES
The substances listed below have been found already in use for cleaning of wax patterns. No performance assessment of these products has been carried out yet.
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Substance in use
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Current
usage
|
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Perchloroethylene (PCE)
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Cleaning of wax patterns.
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Trichloroethylene (TCE) is another cleaning agent used by some industries. Its use is strongly discouraged because of the inherent cancer risk.
HAZARDS TO CONSIDER
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 |
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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). The table shows the ratings for each hazard category on a comparative scale. Click
here to review the key to the hazard categories.
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Substance
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CAS
#
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Hazard
categories evaluated
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Inhalation
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Skin
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Environment
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Flammability
|
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Perchloroethylene (PCE)
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127-18-4
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Very toxic
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Toxic
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Very hazardous
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Non-flammable
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Trichloroethylene (TCE)
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79-01-6
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Irreversible
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Irreversible
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Hazardous
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Non-flammable
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FURTHER INFORMATION
Find information on prices, physical properties and heath risks of common, non-proprietary solvents in our publication
Solvent
Alternatives. However, this edition may not provide information on every solvent listed above.
Comments? Questions? Suggestions? Please
click
here to let us know!
|
Disclaimer
Ü Though all care
has been taken while researching and compiling the information presented
above, GTZ Proklima accepts no liability for its correctness. The reader is
advised to confirm its correctness prior to use or purchase of any substance.
Ü 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 aspects.
Ü 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.
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