Toxicological Evaluation and Limit Values for Nonylphenol, Nonylphenol Ethoxylates, Tricresyl, Phosphates and Benzoic Acid9. C-valueA limit value of 0.025 mg/m3 has been calculated. For substances having acute or subchronic effects, but for which activity over a certain period of time is necessary before the harmful effect occurs, the C-value is set at the limit value. A C-value of 0.02 mg/m3 and placing in Main Group 2 is proposed (MST 1992). C-value 0.02 mg/m3, Main Group 2.
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