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Patch testing of coolant fractions.

P Menter, W Harrison, W G Woodlin

    Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association
    |September 1, 1975
    PubMed
    Summary
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    Machine operators exposed to cutting fluids did not experience dermatitis from coolant components. Patch testing of 206 employees with various coolant suspensions showed no irritant or allergic skin reactions.

    Area of Science:

    • Occupational Health
    • Dermatology
    • Industrial Hygiene

    Background:

    • Machine operators frequently develop dermatitis from exposure to cutting and grinding fluids.
    • Identifying specific irritants in machine coolants is crucial for prevention and treatment.

    Purpose of the Study:

    • To investigate the potential of various machine coolant components to cause skin irritation or allergic reactions in machine operators.
    • To assess the safety of specific coolant formulations used in industrial settings.

    Main Methods:

    • Thirteen different suspensions were prepared using combinations of coolant base, biocides, masking agents, tramp oil, used coolant, and metal fragments.
    • Patch testing was conducted on 206 employees over a ten-month period using these prepared suspensions.
    • Participants included management, salaried, and hourly employees, with some undergoing retesting up to 25 weeks later.

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    Main Results:

    • No positive skin reactions (irritant or allergic) were observed in any of the 206 employees who completed the patch testing.
    • Retesting of 29 individuals multiple times also yielded no positive reactions, indicating a lack of irritancy or allergenicity from the tested coolant components.

    Conclusions:

    • The specific machine coolant components tested, including New Codol (coolant base) and its additives, did not cause dermatitis in the study population.
    • The findings suggest that the tested coolant formulations are unlikely to be the primary cause of dermatitis in machine operators under the conditions studied.