alternate analytical conditions.1 = MEK peroxide monomer, 2 = oxygen, 3 = MEK peroxide dimer. Samples must be stored in a freezer until analysis. Perform blank corrections for each section. Web site owner: New York Times: Details Emerge in British Terror Case, The Free Information Society: HMTD Synthesis, How MEKP cures Unsaturated Polyester Resin (video animation),, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, This page was last edited on 4 October 2020, at 11:21. Methyl ethyl ketone peroxide, 60% in DMP, from K & K Laboratories was used in this evaluation. The detection limit of the analytical procedure is 31 ng per injection. Irritates the nose, eyes, and throat. Humid air (80% relative humidity at 24°C) was pulled through the tubes for 15 min at 1 L/min. Lower Explosive Limit (LEL): data unavailable, Upper Explosive Limit (UEL): data unavailable, METHYL ETHYL KETONE PEROXIDE (Technical product), Acetals, Ketals, Hemiacetals, and Hemiketals. In this evaluation, the preparation of monomer and dimer for analytical standards was accomplished by modifying a procedure reported in the literature (Ref. Explosive decomposition occurs at 230° F. Sensitive to sunlight. ), The detection limit of the overall procedure is 4.51 µg per sample (0.30 mg/m3). This sampling and analytical method provides a simple and convenient means of monitoring occupational exposure to MEK peroxide. Humid air (80% RH at 22°C) was pulled through the train at 1 L/min. Denney, D.B., Goodyear, W.F. Can, 1950, 44, p. 25]. Butanone, also known as methyl ethyl ketone (MEK), is an organic compound with the formula CH 3 C(O)CH 2 CH 3.This colourless liquid ketone has a sharp, sweet odor reminiscent of acetone.It is … Thermal decomposition of this compound has been studied in solution starting … are damaged, end user should discontinue use Heat, acids, bases, or trace amounts of metal ions will cause decomposition. Analytical standard concentrations must bracket sample concentrations. XXV. Strong irritant to skin and tissue. No rapid reaction with air. determine the level of toxicity and the proper personal protective The precision of the analytical procedure is 0.027 for MEK peroxide dimer and 0.035 for MEK peroxide monomer. Table 4.10.2.Stability of Desorbed Samples. known to react with the Thank you for visiting our site. Normally stable, even under fire conditions. Shulsky, M., "Evaluation of Sampling and Analytical Methods Specific for Methyl Ethyl Ketone Peroxide", OSHA Analytical Laboratory, 1982. Storage test at ambient temperature. Detection limit of the analytical procedure.1 = MEK peroxide dimer, 2 = MEK peroxide monomer. Both chemicals are in the form of white powder, and according to some reports, can explode simply by being touched. including trade names and synonyms. Explosive decomposition occurs at 230° F. Sensitive to sunlight. and 5.4.) More info about absorbents, including situations to watch out for... National Oceanic and Atmospheric Administration, Ethyl Methyl Ketone Peroxide (also Methyl Ethyl Ketone Peroxide; concentration >60%), Methyl Ethyl Ketone Peroxide (concentration >60%). Flash point 20°F. Determine the monomer concentration by iodometric titration. According to the NIOSH National Occupational Exposure Surveys of 1972 and 1982, workers in the following industries (with standard industrial code) are most likely to be exposed to MEK peroxide: boat building and repairing (SIC 3732), cut stone and stone products (SIC 3281), pressed and blown glass (SIC 3229), terrazzo, tile, marble, mosaic (SIC 1743), household furniture (SIC 2519), and transportation equipment and supply (SIC 5088). In rabbits, maximum nonirritating strengths were found to be 1.5 and 0.6% for the skin and eyes, respectively. Funk, M.O., Keller, M.B. these chemicals are present. XAD-4 adsorbent was selected as the sampling medium because it has previously been found to be suitable for collecting airborne MEK peroxide (Ref. This amount produced MEK peroxide monomer and dimer peaks whose heights were about 5 times the height of the baseline noise. Sodium iodide solution: Dissolve 1 g of sodium iodide in 1 L of 2-propanol. stated. Fifteen tubes were stored in a freezer (-25°C) and the other fifteen were stored in the dark at ambient temperature (about 22°C). Normalized breakthrough times IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. Seal the vials with PTFE-lined caps and shake them on a mechanical shaker for 1 h. Measure detector response using a suitable method such as electronic integration. A chromatogram of the detection limit of the analytical procedure is shown in Figure