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methyl ethyl ketone peroxide explosive

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methyl ethyl ketone peroxide explosive

are outside our control, we make no warranties, express or implied, of DuPont or others covering any material or its use. Since conditions of use Submit at least one blank with each set of samples. 800-321-6742 (OSHA) A chromatogram at target concentration under the alternate analytical conditions is shown in Figure P&CAM 331 in "NIOSH Manual of Analytical Methods", 2nd edition, U.S. Department of Health, Education, and Welfare, Public Health Services, Center for Disease Control, NIOSH, DHEW(NIOSH) Publication No. Use caution: Liquids with this reactive group classification have been The yield is approximately 5 g. Determine the dimer purity by iodometric titration. Lower Explosive Limit (LEL): data unavailable, Upper Explosive Limit (UEL): data unavailable, METHYL ETHYL KETONE PEROXIDE (Technical product), Acetals, Ketals, Hemiacetals, and Hemiketals. Prepare analytical standards by further diluting stock standards with 2-propanol. including, without limitation, no warranties of merchantability or fitness Stable in normal transportation. Unless otherwise stated, permeation was measured for single chemicals. Fifteen tubes were stored in a freezer (-25°C) and the other fifteen were stored in the dark at ambient temperature (about 22°C). and van den Berg, J.H.M., " Determination of Trace Amounts of Hydroperoxides by Column Liquid Chromatography and Colorimetric Detection". Store samples in a freezer upon receipt at the laboratory. Dimer(based on the data of Table 4.4.1. ), The reliable quantitation limit is 4.51 µg per sample (0.30 mg/m3). Another set of storage samples were prepared and analyzed over a 16-day period. that the garment selected is suitable for the intended use. A Hewlett-Packard 3357 laboratory data system was used in this evaluation. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. Denney, D.B., Goodyear, W.F. 4.5.) After sampling, seal the tube with plastic end caps. Let stand at room temperature overnight. The desorption efficiency (DE) of MEK peroxide was determined by liquid-spiking 80-mg portions of XAD-4 with MEK peroxide at 0.5, I already had some sulfuric acid and 35% h202! rates than the fabric. 5.3. and But the method suffers from a long run time as it requires dual injections and a column wash. An HPLC method using electrochemlcal detection has been reported, (Refs. reported in minutes. Methyl ethyl ketone peroxide, or MEKP, is a similar highly explosive chemical. Table 4.10.2.Stability of Desorbed Samples. A chromatogram at the detection limit of the analytical procedure is shown in Figure National Ocean Service, Prepare separate calibration curves for MEK peroxide monomer and dimer by plotting detector responses versus the analytical standard concentrations. USA.gov. Continue stirring at room temperature overnight. The average of the reanalyzed samples relative to the average of the original analysis was 101.7%. The reliable quantitation limit and detection limits reported in the method are based upon optimization of the instrument for the smallest possible amount of the analyte. Used as an initiator for room temperature cure of unsaturated polyester resins. (Section. these chemicals are present. Allow the flask to stand in the dark for 15 min. This sampling and analytical method provides a simple and convenient means of monitoring occupational exposure to MEK peroxide. individual surviving ingestion of two ounces of a 60% methyl ethyl ketone peroxide solution. 5.8.). Depending on the experimental conditions, several different adducts of methyl ethyl ketone and hydrogen peroxide are known. Place methyl ethyl ketone (14.4 g, 0.2 mole) and 30% hydrogen peroxide (22.67 g, 0.2 mole) in the flask. The samples were desorbed 24 h later with 2 mL of 2-propanol. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. determine the level of toxicity and the proper personal protective stated. For example, both ACGIH (Ref. Wrap the tube lengthwise with an official OSHA seal (Form 21). Table 4.9.Breakthrough Data at 10× Target Concentration. The permeation characteristics of mixtures can deviate considerably Given orally, by inhalation, or by intraperitoneal injection, methyl ethyl ketone peroxide causes hyperemia of the lungs with petechial or gross hemorrhage in mice and rats. Figure 4.4.1. (Ref. METHYL ETHYL KETONE PEROXIDE is a strong oxidizing agent. Essentially all of the MEK peroxide was collected on the front tube. (USCG, 1999), Extremely destructive to tissue of the mucous membranes, upper respiratory tract, eyes, and skin. The instrument response to MEK peroxide over the range of 0.5 to 2 times the target concentration is linear with a slope of 120700 area counts per µg/mL for the dimer and 113213 area counts per µg/mL for the monomer. Dry over anhydrous magnesium sulfate and filter. absorbents No sample result had a percent deviation greater than the precision of the overall procedure, which was ±14.5%. Skin: Wear appropriate personal protective clothing to prevent skin contact. A personal sampling pump that can be calibrated to within ±5% of the recommended flow rate with the sampling device in line. 4.1. Unpublished. 5.10.). Table 4.6.1.Precision of the Analytical Methodfor MEK Peroxide 4.11.2. 5.3. MEKP is a colorless, oily liquid whereas acetone peroxide is a white powder at STP; MEKP is slightly less sensitive to shock and temperature, and more stable in storage. Cummins, K., "Analysis of Methyl Ethyl Ketone Peroxide by HPLC and Detection by Electrochemical Reduction Using a Mercury-Gold Electrode", OSHA Analytical Laboratory, 1988. Methyl ethyl ketone Sulfuric acid Methyl t-butyl ether Ammonium sulfate Magnesium sulfate, anhydrous 0.01 N Sodium thiosulfate Potassium dichromate, primary standard Hexane Liquid nitrogen. The only variable available to the user is to change the rate of this process using a catalyst, often Methyl-Ethyl-Ketone-Peroxide (MEKP), which is very toxic. A draft copy of this procedure and six samples spiked with MEK peroxide were given to a chemist unassociated with this evaluation. alternate analytical conditions.1 = MEK peroxide monomer, 2 = oxygen, 3 = MEK peroxide dimer. Toxic effects (This section is for information only and should not be taken as the basis of OSHA policy.). May be ignited by heat, sparks or flame and undergoes self-accelerating decomposition. are damaged, end user should discontinue use Sittig, M., "Handbook of Toxic and Hazardous Chemicals", Noyes Publications, Park Ridge, New Jersey, 1981. Wear safety glasses in all laboratory areas. When the target concentration of the analyte is exceptionally higher than these limits, they may not be attainable at the routine operating parameters. A portion of Samples must be stored in a freezer until analysis. 1986. Unpublished. An HPLC column capable of separating MEK peroxide monomer and dimer from potential interferences. Methyl ethyl ketone peroxide explosive molecule – Hochwertige Bilder zu Medizin und Wissenschaft für Ihre Projekte kaufen – lizenzpflichtig und lizenzfrei – 13245569 : 1338-23-4: UN-No. Organic Methods Evaluation BranchOSHA Analytical LaboratorySalt Lake City, Utah. Users must request such authorization from the sponsor of the linked Web site. Table 4.4.1.Instrument Response to MEK Peroxide Dimer, Table 4.4.2.Instrument Response to MEK Peroxide Monomer. I plan on making Tri-Nitro-Tolulene (TNT), and Methyl ethyl keytone peroxide. The concentration should be approximately 5 mg/mL. Ketone peroxides, including acetone peroxide and methyl ethyl ketone peroxide, find … The back section of the tube was removed. If fabric No. Place 20 mL of 2-propanol, 2 mL of glacial acetic acid, and 0.5 g of potassium iodide in a 500-mL Erlenmeyer flask.

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