Document 2RL66Ye76p1kRD59MaRDd8wmb

WY-26-2000 11 :S3 I I t KASaJlTZ.BENSCN Monsanto MONMiTO MOMTftUL CttEMOtU CO. Ht K. lwlwir< St. Util, Uiiiwrl RIM Pkott; 0141 tS4~1MC March 16, 1975 P.02/'0S Mr. Dan A. Albert Staff Supervisor Personnel Relatione Westlnghouse Electric Corporation Highway 58 Vest South Boston, Virginia 24592 .. ' . Dear Mr. Albert: Attached are responses to the questions listed In your letter dated February 3, 1975. In addition to the industrial hygiene practices described in our responses to your questions, Z cannot overemphasize the' need to properly control the use and handling of Inerteena to prevent thein.'escape into the environment. AIbo, in discussing this information with your eaployees, I strongly recommend that the perspective gained from over 40 years or experience in which no human harm has resulted, be emphasized. In summary, the proper handling of Znerteens should pose no environmental or human health problems, permitting society's continued use of a very valuable material. I hope the above information is useful to you. If I can be of further service please let me know. Sincerely, WBP;pd V. B. fapageorge Manager, Produet Acceptability Specialty & Procesa Chemicals S wvll ManieM* \ TOWOLDMONOQ4641 MRY-26-2000 11s53 KfiSOUITZ. BENSON U P.03^05 1. Question: Does Xnerteen have permanent effects on the human body? If so, what type of permanent damage and . how long a period of time does it take Tor this to ` develop? If not, explain why, if possible. The polychlorinated biphenyls in Iaerteen can have permanent effects on the human body. The length of time or period of exposure necessary to develop symptoms depends on the degree or amount of exposure. Xn general, a single exposure for a few minutes to atmospheric concentrations that cause irritation to the eyes and/or respiratory tract would not be expected to cause either the akin eruptions or demonstrable liver injury. The problem arises from repeated and prolonged exposure to atmospheric concentrations in excess of the accepted Threshold Limit Levels or repeated and prolonged skin contact. The polychlorinated biphenyls have not been recognized as shin "irritants" in the ease sense that caustic materials or many . . organic chemicals are irritants. Because of their "solvent1* action in removing the natural fats and oils from the skin, leaching, drying and chapping, repeated and prolonged skin contact should be avoided. ' When the polychlorinated biphenyls are mixed with other Chlori nated hydrocarbons, the mixture may be classified as a skin irritant. The potential toxic effects in humans from excessive exposure to polychlorinated biphenyls include injury to the liver and . . chloracne. In animals, the liver effect is demonstrated by increased liver weights and injury to cellular tissue. Although chloracne is difficult to evaluate in animals, in humans, this take the form of comedones (large blackheads with typical acute pustules) and may be an external symptom of over exposure pre ceding serious liver injury. Animal data and human experience indicate that the toxic effects are similar whether exposure results from ingestion, inhalation of vapors, or absorption of the liquid material through the unbroken skin. (See AIHA Hygienic Guide Series - "Chlorodiphenyls" attached.) 2. Question: Several hourly employees have mentioned recently that many chemicals such as Xnerteen cause sterilization . after prolonged*use. Is this true? There is no evidence that polychlorinated biphenyls cause "sterilization" in humans. HONS L001O \ rmy-26-2000 11:54 '% KflSOUITZ.BENSON 1 P.&4^5 3, Question: Since Inerteen effects birds and other animals, lr there la no real effects to human beings, hove do you explain it to employees in such a way that they will understand why it can kill a bird and not a human? . There is a potential real effect to humans - including death as discussed in the answer to Question 1. Due to differences in metabolism of food (and food contami nanta) in birds and humans (and particularly the difference In the reproduction process In birds and mammals - inclu ding humans), birds are partlcualrly sensitive to many chlorinated hydrocarbons including polychlorinated biphenyls.'' h. Question: If an employee spills Inerteen on his clothing and later takes the clothing home to be wa ed with other -clothes, will this have any effect on he or his family and should b`e carry his clothes home to be . washed? There should not be any effect on an employee or his family from home laundering of work clothing. If washed with other clothing, there may be residual odor of the chlorinated . hydrocarbons in the clothing. 5. Question: Employees carry Inerteen home on the soles of their shoes and complain quite a bit about the effect Inerteen , has on wearing out their shoes. Is this a -serious problem? ' Will Inerteen in the sole3 and leather of shoes, over a long period of time, have an effect on the feet and skin since the shoe is the only protective equipment we wear on our feet and the Inerteen penetrates through the leather. . There should not be polychlorinated biphenyl on the floor foT workmen to contaminate their shoes to carry home. The plas ticiser or solvent action will destroy or shorten the life of the shoes. More importantly, the wearing or contaminated shoes could lead to absorption of the liquid through the soles of the feet as through any other unbroken skin surface. 6. Question: There is one employee in our plant who had no pro blem whatsoever with Inerteen years ago. After six years . of using, now when he works in Inorteen (whichnis a part of hie job) he develops a swelling on the Inner bicep of - his left arm, only In one location. Could this be from Inerteen or not? It goes away as soon Os he gets out of the Inerteen. It Is similar to the swelling after talcing an injection. rn i --a-n KWdUWI i4>JdfcN50N \ P.05/05 We do not believe there eon be any association between "a swelling on the inner bleep" of the arm and exposure to polychlorinated biphenyls. 7, Question: Are there hand cleaning solvent materials that we should be using when working in Inerteen to coat our skin before working In it and to wash. It off after we finish working In it? Please give your recommendation. Our employees working in Inerteen . are sot able to U9e gloves since it la an assembly area. Even if they could, the Inerteen would destroy the protective glove.. .. * We assume the question refers to the use of "Barrier Creams" rather than a "hand cleaning solvent". There are a number of barrier creams available to protect .. workers against water insoluble solvents* Probably the most effective include silicone' "to provide an iapervetrableBhleld", A problem with such creams is that they may offer a false sense of security. Proper use includes a discipline which requires liberal appli cation at the .beginning of a work, shift and after each washing of the' hands during the work day. HONS 1,00 TOTAL P.05 TOWOLDMONOQ46414