Other issues addressed by the standard include respiratory protection, personal protective equipment, medical surveillance, emergency planning, hazard communication, MSDS, labels, training and record-keeping. Most laboratory use of methylene chloride should occur in an operating chemical fume hood. Previously, methylene chlorid e exposure limits were based on preventing irritation and injury to the neurological system. The new exposure limits also address health issues associated with chronic exposure. Methylene chloride is now classified as a suspect, or probable human carcinogen.
Laboratory studies indicate that chronic exposure causes cancer.
For more information concerning these two chemicals, please call EHOS at ext. M.D. Michael Ujhelyi, Ph.D. Thank you for your prompt and early response. We appreciate the diligence you and your staff exhibited. By Jackie Wilson, Purchasing Assistant, Radiation Safety Office Important Reminder from Radiation Safety Quite a few Semi-Annual Renewal Proposals have not been returned. We request that all Principal Authorized users who have not returned their reports, please do so very soon.