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C� <br />Naphthalene [CAS: 91-20-31 <br />Naphthalene occurs commonly as white, crystalline flakes with a <br />strong coal tar odor. <br />Exposure to naphthalene vapors may cause headache, loss of <br />appetite, nausea, and eye injury. Ingestion of relatively large <br />amounts of naphthalene may cause hemolytic anemia and <br />hemoglobinuria. <br />The TWA of the PRL for naphthalene is 10 ppm in air. <br />42 <br />