Document 3JkO8OJazGB5aJQrbeOkbKnd0

CELANESE CHEMICAL COMPANY Chemcel Plant Bishop, Texas To: Dr. R. R. Graham From: G. D. Boyd GDB-197-82 November 5, 1982 LABORATORY DEPARTMENT SUMMARY - OCTOBER, 1982 Attached is the Laboratory's monthly summary for October. The summaries are by groups. A table listing priorities, justifications, and estimated completion dates of Special Problems projects is also included. GDB:erg Chemical J. J. Fritsch D. G. Pausky W. H. Meyer A. A. Miller G. R. Scholz M. D. Harvey J. B. Brown G. L. Cade J. R. Carr D. E. Lockwood L. M. Harvey H. H. Thigpen A. G. McGehee B. C. Kerr F. R. Dow W. P. Hightower R. S. Hahn J. C. Rubiano K. R. Stelts W. H. Brough G. D. Boyd Distribution: Plastics D. A. Reck D. W. Steele E. J. Heinz CCCTC G. J. Fisher W. E. Heinz W. T. McNair Cent ral--Files. J. N. Gann, Bay City J. E. Sanborn, Bayport J. L. Paul, Clear Lake D. W. Harris, Pampa T. H. Golson, Dallas PROPRIETARY INFORMATION FOR USE ONLY WITHIN CEiAHESE 00377.3 26 83 GDB-197-82 Page One November 5, 1982 HIGHLIGHTS - Analysis of MO-IV feed has determined that the C7-C16 hydrocarbons (approximately 1 ppm each) are not reduced by the methanol filters and/or resin bed. - The Monsanto Research Team has completed its formaldehyde/methanol sampling. Duplicate samples were taken by the Laboratory for cross reference. - Caustic consumption in the BOD Unit anaerobic reactor is decreasing as polyol acclimation progresses. - "The economic incentive for further evaluation of DuPont Sulfuric Acid 80Z has been eliminated. - The sinter test for silver catalyst has been discontinued on a routine basis. - Sodium sulfate levels in PE AML remained below 0.5 wtZ (contained-salt basis) for most of the month while the unit ran at reduced rates. - One unknown has been identified in our TMP product. The compound is the cyclic adduct of dimethylolbutyraldehyde (DMB) and TMP. - The Laboratory-developed turbidity test and melting data were successfully used to indicate that the paraform prill "soak tank" alone probably did not provide the degree of polymerization (soft point temperature) required to avoid sticking to tower walls. The pilot plant switched to additive (approximately 2 ppm sodium) and has run successfully for approximately 3 weeks. - Good correlations of turbidity with soft point temperature and melting temperature of fresh falling paraform prills was obtained. - The rate' of increase of paraform melting point during storage appears to correlate with the polymerization rate of para liquid from which it is made. - Pilot plant paraform prills have been successfully dried to 95-96 wtZ HCHO in approximately 1 hour at 90*C. About 6Z of the HCHO present went with the drying air when the assay was 95%. 003774 GDB-197-82 Page Two November 5, 1982 I. CHEMICAL ANALYTICAL GROOP - QUALITY ASSURANCE Paraform Area Ester Unit product, currently n-Butyl Acetate, is showing the effects of CLP Acetic Acid feed (Propionic Acid content of 250 ppm). Production is at 0.03 wtZ Butyl Propionate and approximately 600 M lbs. have been waived at 0.02 wtZ vs. 0.01 wtZ Mfg. Control Specs. The intermittent arrival of Mexico Acetic Acid should moderate the problem. The Mfg. Control Specification will be readjusted as soon as we determine maximum probable propionate carry over from the Ester process. None this month. Customer Complaints Quality Waivers 9- 30-82 - n-Propyl Acetate to Houston Solvents, Houston, TX - 3,630 lbs - nButyl Acetate content at 0.52 wtZ vs. MCS of 0.20 wtZ max. - QD 10- 14-82 - Molten TMP to BASF Wyandotte, Washington, NJ - 41,190 lbs - TMP content at 97.88 wtZ vs. MCS of 98.0 wtZ min. SQD 10-28-82 - n-Butyl Acetate to Bayport Terminal - 450,510 lbs (3 x 20M Gal cars) - Butyl Propionate at 0.02 vs. 0.01 wtZ max MCS. - QD 10-29-82 - n-Butyl Acetate to Bayport Terminal - 150,000 lbs (1 x 20M Gal car) - Butyl Propionate at 0.02 vs. 0.01 wtZ max MCS. - QD 003775 GDB-197-82 Page Three November 5, 1982 PRODUCT QUALITY WAIVER HISTORY Z QD1 Month Z QD YTD Z SQD2 Month Methylal PE-Pure PE-Tech n-Propyl Acetate Diacetone Alcohol Sodium Formate MEK (Purchased) PVB n-BuH n-Butyl Acetate Formaldehyde Trimethylolpropane 0 30.2 0 000 000 5.8 0.3 0 0 4.5 0 000 000 000 0 0 18.2 00 0 0 0 3.6 Z SQD YTD 0 0.3 0.3 0 0. 3.2 6.5 2.0 1.4 <0.1 0.2 Lbs. of product shipped out of Manufacturing Control Specification vs. total lbs. of that product shipped for month and YTD. 2 Lbs. of product shipped out of Sales Specification vs . total lbs. of that product shipped for month and YTD. Sample Count Chemical Section Instrument Section Total Technician Overtime Chemical Section Instrument Section Total Sample Shipping Domestic Export Plastics Others Total QA Statistics Shipments Waivers (QD) Waivers (SQD) Complaints Analytical Statistics Oct. Oct. YTD 3758 1865 5623 46,550 27,122 73,672 38 558 32 488 70 1046 66 602 5 31 08 8 102 79 743 562 5696 3 18 1 13 1 16 Previous YTD 45,914 26,975 72,889 538 330 868 593 52 11 102 758 -> 6279 24 13 15 003776 GDB-197-82 Page Four November 5, 1982 II. ANALYTICAL GROUP - F. R. Dow, Group Leader Capillary Column GC Method Development (Wise, Frankenhauser) - Capillary Column GC procedures applicable to routine analysis have been developed for diacetone alcohol, 1,3-butylene glycol, butyraldehyde, PE and TMP. After precision studies have been made the procedures will be submitted for SMA approval. Ion Chromatographic Analysis of Demineralizer Train #2 Feed Water (Glenister) - A sample of the Demineralizer Train #2 Feed Water was analyzed for sodium (Na+), chloride (Cl"), and sulfates (SO^**) utilizing Ion Chromatography. The Demineralizer Feed is routinely analyzed for sodium by Atomic Absorption (AA) and Chlorides by the Volhard Method. The Feed Water typically contains approximately 200 ppm Na+, 250 ppm Cl", and 90 ppm SO^". G. D. Boyd, Lab Supt., suggested examining Ion Chromatography (IC) as a single analytical method for determination of these components. Results of this preliminary determination indicated IC offered an excellent method for the analysis with very good accuracy. The sole limitation of the IC method is that the time requirement of the analysis is longer as compared with AA and the Volhard method. However, the method offers a good alternative method to verify the AA or Volhard methods on a routine basis. Hydrocarbon Analysis of MO-IV Methanol Feed (Glenister) - Samples of MO-IV methanol feed from the feed tank and downstream of the filters and resin bed were analyzed for the C7-C15 hydrocarbons. The analysis utilized a capillary GC method with heating of the samples prior to injection. The results indicated levels of approximately 1 ppm of the C7-C16 hydrocarbons in the MO-IV feed with no change in the feed composition downstream of the filters and the resin bed. The sample of the MeOH downstream of the final filter was filtered using a 0.2 ym teflon sheet and reanalyzed for any changes in the hydrocarbon composition. The filtration did not appear to reduce or remove the low level hydrocarbons. Documentation of the results will be issued. OSHA C. E. Gary, J. F. Glenister Formaldehyde Methods Validation (Gary) - The Laboratory validation of Celanese and NIOSH chromotropic acid formaldehyde methods is complete. The report is in preparation. Monsanto Research Formaldehyde Facility Study (Gary, Glenister) - Duplicate samples of formaldehyde and methanol exposures were obtained along with the Monsanto Research Team. The analyses have been completed and a report is in preparation. 003777 GDB-197-82 Page Five November 5, 1982 III. STAFF CHEMISTS Vapor-Liquid Equilibria for Formaldehyde (Kerr) - A cursory evaluation of the type of equipment required to obtain V-L Equilibria for the-vacuum distillation of formaldehyde was made. Further work on this project is awaiting Process Engineering evaluation of the potential for making the required changes in MO-II and/or MO-III. Paraform Dnit Data Analyses (Kerr) - Yield Accounting data from the Paraform Unit has been further studied with respect to the apparent loss of efficiency in Paraform Operations. Correlations were attempted with data from Weak Formaldehyde Unit, methanol concentration and feed volumes. None of these factors had a significant correlation with Paraform efficiency. Preparation of 2-Methyl-1,3-Pentanediol (Kerr) - Propionaldehyde obtained from Bay City is being used to prepare propionaldol, the pre-cursor to the subject chemical. This chemical is being prepared as a sample for ICI Americas in hope that it might be found to be a satisfactory substitute for hexylene glycol (hydrogenated DAA). The propionaldol will be hydrogenated and vacuum distilled. Dialysis Studies (Kerr) - Preliminary lab work shows that when PE "A"ML is dialyzed through regenerated cellulose into acetone that sodium formate crystals analyzing 97+% may be recovered from the acetone phase. Other work indicates that formaldehyde may be dialyzed into methanol across a membrane of nylon film. These studies will be pursued as time permits to seek lower energy methods for processing process streams which currently require large amounts of energy for recovery or disposal. Paraform Prill Pilot Plant Support (Thigpen) - The paraform prill pilot plant (PPPP) has operated very successfully since the addition of a "soak tank" to provide residence time (approximately 15 minutes) between the addition of additive and the prilling nozzle. The Laboratory-developed turbidity test and melting data on fresh falling prills indicated that the "soak tank" alone probably did not provide the degree of polymerization (soft point temperature) required to avoid sticking to the tower walls. The PPPP went quickly to additive (approximately 2 ppm sodium) and no problems of sticking to the walls have been encountered. Turbidity and melting data on PPPP fresh falling prills has been collected. Good correlations of soft point temperature and melting temperature with turbidity have been developed. The turbidity test will be very useful as a control analysis for operating the PPPP. 003778 GDB-197-82 Page Six November 5, 1982 Modifications of the turbidity test can probably be used to measure the polymerization rate or relative degree of polymerization of any HCHO solution. The Tech Center will explore this possibility as it applies to their low residence time evaporation pilot plant studies. Various applications of the test at Bishop will be examined after the PPPP support studies are complete. The rate of melting point change (polymerization rate) with time is being followed on several samples of paraform prills. Prills made with no additive are changing slower than prills made with 2 ppm sodium which are changing much slower than prills made with several hundred ppm sodium or oxalic acid. It appears that the rate of melting point change during storage is related to the polymerization rate of the para liquid from which they were made. This is not surprising. Future plans are to relate the melting point of stored prills (with and without additives) to end-use suitability by working with the MTDL lab at Summit where end-use evaluation will be performed. Drying studies in an air purged rotovap to take fresh PPPP 91-932 HCHO prills up to 95-962 HCHO were begun. Prills with an indicated soft point of 93*C stuck together and caked to the walls of the flask when a 95*C bath was used to heat the rotating flask. This confirms that the "soft point" indicated by the melting point apparatus represents a "sticky" temperature for the prills. The same prills were successfully dryed in a 90*C bath. The beginning assay of 92.52 HCHO was raised to 952 in about 45 minutes and to 962 in about 1.0 hour. The log of the assay was related to time (similar to earlier lab studies) up to about 962 HCHO where a much slower drying rate was observed. This slower rate may represent the polymerization rate. This will be confirmed in additional studies. The rate of HCHO going with the drying air was linear with time. About 62 of the original HCHO was lost at 95 wtZ HCHO and approximately 102 was lost when the assay hit 96 wt2. The rate of HCHO loss to the drying air should be related to the polymerization rate (depolymerization rate) of the paraform. This will be determined in future studies. IV. SPECIAL PROBLEMS - L. M. Harvey, Group Leader Waste Management B. K. Huelie A status letter documenting Laboratory studies to prepare effluents for deep well injection has been published (BKH-28-82, KRK-11-82). After a meeting with URM on October 7, a plan for future core testing was developed. URM representative Bob Kent stated that the best way to measure the compatibility of Chemcel effluents with the injection zone is via core tests using core material from the actual Chemcel injection zone. Additional Laboratory core tests will be postponed for two reasons: (1) URM stated that core tests using core material from another injection zone may give questionable results, and (2) because of the continually changing composition of effluents, a minimal amount of time should elapse between core testing and actual injection. URM also recommended that solids compatibility be determined via core tests using an inert core having a porosity equal to the porosity of our own injection zone. By November 8, URM will provide the Laboratory with an inert--core testing procedure. 003779 GDB-197-82 Page Seven November 5, 1982 Chemical compatibility core tests using a Bay City Plant core were performed on 4 sump lines fed to the BOD equalization basin. Three of the four sump lines completely failed the tests due to solids flowing out of the core. An infrared spectra of the solids show Si-0 bonding, indicating core material is being displaced as a result of core swelling. Plugging due to solids also occurred when distilled water was flowed through the core. URM has no explanation for this type of plugging. Future core testing of individual sumps will occur only if a particular sump effluent will be sent to the injection well without equalization with other effluents. BOD, Utilities D. R. Akin, J. C. Bustabad BOD II Unit Operation (Akin) - The anaerobic reactor was operated at an average organic loading of approximately 41,000 lbs of COD per day with an average COD removal efficiency of 63% during the month of October. The activated sludge system operated at an average organic loading of approximately 15,000 lbs of COD per day with an average COD removal efficiency of 91.52 (average outfall COD = 273 ppm) at a 4.2-day food detention time. Caustic usage (for buffering the anaerobic reaction) thus far in' October has been significantly less than the amount used in September. The average daily usage of 20% NaOH during September was 2150 gallons as compared to 950 gallons in October. The pH of the reactor liquid averaged 7.15 during September and 7.26 in October. The trends in pH and caustic usage will continue to be followed as caustic usage is minimized. Potential Use of DuPont H7SO4. in the Demineralizer Unit (Bustabad) Three samples of DuPont H2SO4 80% were received to be evaluated for potential use in the Demineralizer Unit. Ten-percent H2SO4 is used in the Demineralizer Unit for regeneration of the strong acid cation exchange resins. One sample varied significantly from the other two. It was dark brown with a tremendous amount of white sediment; it contained >1300 ppm iron. The other two samples were slightly colored and transparent with some sediment; they contained 110 ppm and 147 ppm iron. A DuPont representative was contacted about the variability of the samples. He gave assurance that the variability could be avoided by enforcing specifications if the H2SO4 were to be bought for Plant use. However, he also presented information showing the DuPont H2SO4 80% to no longer be economically advantageous for Celanese. A letter has been issued (JCB-18-82). No further work is planned with the DuPont H2SO4 80%. Method for Differentiating Cation Exchange Resins from Anion Exchange Resins (Bustabad, Russell) - A method was issued for differentiating most cation exchange resins from anion exchange resins (JCB-16-82, JER-49-82) The premise of the method is that in a saturated sodium chloride solution, most cation exchange resins will settle to the bottom while most anion exchange resins will float to the top. This is the result of the relative differences in the densities of the resins. 003780 GDB-197-82 Page Eight November 5, 1982 Methanol Oxidation J. E. Russell, P. W. Young MO Recycle Streams (Russell) - The Laboratory and Process Engineering are jointly investigating the expected MO-II quality when the Engineering Resins Company shuts down its units in mid-November. At that point," MO-II will be receiving T-185 OH and the Vaporizer Blowdowns from MO-II and MO-IV. Past studies have indicated there may be a link between these recycle streams and decreased MO-II product quality. The MO-II product formaldehyde normally is fed to the Trioxane Unit, where the impurities introduced by vaporizer blowdowns and T-185 OH do not seem to be detrimental. The Laboratory and Process are evaluating the options that are available if MO-II product quality deteriorates when Engineering Resins shuts down. Some options being considered are: (1) burning T-185 OH, (2) burning the vaporizer blowdowns, (3) dead tanking some or all the recycle streams until Engineering Resins is operating again (expected Jan. 1983), or (4) preferentially running the PE Unit while holding the IMP Unit down. A letter will be published listing the viable options. The letter will also identify the potential consequences associated with taking none of the above actions. Unit Support (Russell, Young) - Absorber vent samples from MO-II and MO-IV were analyzed for, use by Operations in efficiency calculations. Vent analyses will be discontinued on a routine weekly basis. The analysis will be provided as needed to identify problems or as requested. MO Vent Analysis for HCHO (Russell) -- The Laboratory is resuming method development for determining HCHO in the MO vents. The method is based on converting the HCHO to HMTA (hexamethylenetetramine) by sparging the vent gas through an ammonia solution. Preliminary tests for method validation are underway. 37% Formaldehyde Stability (Young) - The stability tests of 372 HCHO at 80* and 90*F are still in progress. Stability of HCHO From CCCTC MO Pilot Unit (Young) - A sample of 51% formaldehyde (which contains approximately 3 ppm sulfur) from the CCCTC pilot unit was set up -for a stability test. Three samples of -the sulfur-containing HCHO were set up - one with no Metolose" stabilizer and two with 11-12 ppm Metolose stabilizer added. At the same time three samples of fresh 51% MO-IV HCHO (not resin treated) were set up - one without stabilizer and two with 11-12 ppm stabilizer. All six samples were placed in an oven at 49C (120*F). (Our sales specifications state that at this temperature, our 50% HCHO with our stabilizer is stable for 30 days.) The following day, the two samples without stabilizer were cloudy. The four samples with stabilizer were still clear. This test will proceed through November. 003781 GDB-197-82 Page Nine November 5, 1982 Silver Inventory (Russell) - The Laboratory has reduced its silver inventory to a static level sufficient for proposed future testing. Silver transfers are not expected since the sinter test has been discontinued on a routine basis. The sinter test will be retained as a purchase specification for silver catalyst and will be performed on an "as requested" basis. Weak HCHO, Paraform, Esters P. W. Young Paraform Efficiency Investigation (Young) - Any formaldehyde (HCHO) fed to the Paraform scrubber (T-317) appears in cost accounting as a loss in efficiency to the Paraform Unit, even though a major portion of the HCHO is recovered in the scrubber and sent to the Weak Formaldehyde Recovery Unit. The feed to the scrubber was sampled and analyzed for formaldehyde, formic acid and methanol. The analyses are still in progress. Another sample of the feed will be taken to verify the results. Methanol Synthesis P. W. Young MS Finishing Column Vent (Young) - The overhead vent from the finishing column (T-288) is sent to the boilerhouse to be burned. Due to the addition of T-288 OH into the crude methanol feed to MO-IV, the composition and BTU value of this stream has changed. In order to update this data, a sample of this vent was sampled for analyses. The gas portion of the sample was sent to CCCTC for analysis by mass spectrometry. The condensate portion of the sample is being analyzed by the Laboratory. These analyses are still in progress. Pentaerythritol D. R. Akin, J. C. Bustabad PE Hydrolysis Resin Bed Support (Akin) - The resin bed performed well during the month with low H2SO4 usage. As a result the Na2SC>4 content of the AML was maintained consistently less than 0.5 wtZ on a contained-salt basis except after a brief sodium surge through the resin bed which occurred while the unit was being switched from technical to pure grade on the 7th. The Na2S04 content of the AML (0.5-0.7 wtZ) for a few days following this surge reflected the increased H2SO4 usage. The PE Unit ran at reduced rates the entire month until the unit was shutdown on the 18th. Update Unit Lab Methods for Sodium (Bustabad) - An effort was made to find a method for determining sodium concentrations in the dissolve tank and neutralizer tank samples in place of the present specific ion electrode method. The Unit has had problems in the past with proper maintenance of the Orion Ionalyzer 901. A previous unit method for determining sodium concentration in PE streams utilized was a cation exchange resin and a titration-. This method is satisfactory for sodium analyses of dissolve tank and neutralizer tank samples. It is also satisfactory for sodium analysis of 'B' cake samples, thus giving an indication of ash in the final product. The resin method will be revised and issued as an alternative unit method. 003782 GDB-197-82 Page Ten November 5, 1982 PE UV Absorber (Jasek) - Attempts to isolate the UV absorber(s) have been directed to the AML. Extraction of the AML with an organic solvent has removed a UV-absorbing compound(s). Analysis by Infrared Spectroscopy indicates the presence of double bond(s). Bromination of this fraction results in. loss of UV absorbance. Gas chromatographic analysis indicates the loss'of three major peaks when the UV-absorbing fraction is brominated. Work continues. Recover PE from VCI Waste (Jasek) - Six samples of residue from the aqueous layer of VCl's experimental, continuous decantation process were received from Mr. Joe Bush (VCI). Analyses were conducted for PE and PE-related components and sodium, formate. The results were transmitted to Mr. Bush (TAJ-57-82). Trimethylolpropane J. C. Bustabad, T. A. Jasek Unit Support (Jasek) - After startup of the TMP Unit, problems with the extractor were experienced. The Laboratory provided analytical support in terms of sodium formate analysis to Operations Personnel. Isolation of TMP Unknowns (Jasek) - One of the unknowns isolated from TMP has been identified by the Tech Center as the cyclic adduct of dimethylolbutyraldehyde and TMP. Isolation and identification efforts continue on the other unknowns present in TMP. Update Unit Lab Method for Sodium (Bustabad) - An effort was made to find a method for determining sodium concentration in T-204 R samples in place of the specific ion electrode method. The Unit has had problems in the past with proper maintenance of the Orion Ionalyzer 901. A previous unit method for determining sodium concentration in PE streams has been adapted for use in analyzing T-204 R samples. This method will be revised and issued as an alternative unit method. Paraformaldehyde Prilling J. E. Russell Prills Drying Study (Russell) - The Laboratory prilling studies through September 1, 1982 have been documented. The report is under review and should be issued in November. 003783 GDB-197-82 Page Eleven November 5, 1982 General J. E. Russell returned to work full-time on October 13. Jim had been on sick leave since September 9 following major back surgery. Hub Thigpen attended paraform prill meetings at the Tech Center on October 1, October 15, and October 29. 003784 GDB-197-82 Page Twelve November 5, 1982 SPECIAL PROBLEMS PROJECTS Unit/Project_________________________ Chemist_________ Priority Paraform Determine efficiency losses Support paraform prilling unit Young Thigpen 1 1 Estimated Completion Date November 1982 December 1982 Methanol Oxidation Improve energy efficiency with vacuum distillation of absorber product Determine stability of un stabilized 37% ECHO at 80` or 90*F Determine stability of Pilot Plant 51% HCHO produced during CS2 injection Improve Unit lab method for H20 in MeOH Determine absorber vent losses Clean-up recycle streams Support Plant trial using MO-IV sidedraw in lowassay blending Develop improved washing technique for catalysts Monitor product color Monitor catalyst start-up performance Develop method for catalyst evaluation Kerr Young Young Young Russell Russell Russell Russell Russell Russell Jasek 1 1 1 1 1 1 1 2 2 2 December 1982 December 1982 December 1982 December 1982 December 1982 Continuing December 1982 February 1983 Continuing Continuing February 1983 Methanol Synthesis Support Plant trial of corrosion inhibitor in MEA system Recover contaminated carbon using ultrasonic cleaning Young Jasek 1 1^ March 1983 January 1983 003785 GDB-197-82 Page Thirteen November 5, 1982 Unit/Project Chemist Oxo/BuOH Continue Rhodium Accounting Support Plant trial using polyalpha olefin as reactor solvent Recover Rhodium at Bishop Huelle Huelle Huelle BOD II Support Operations during polyol and VCI acclimations Conduct pulse test of anaerobic reactor Evaluate aerobic digestion of sludge after ultra sonic treatment Akin Akin Jasek Dtilities Determine TPP, TPPO emissions from Boiler No. 16 Support deep well project Reclaim Pond 4E Eliminate zeolite beds Akin Huelle Kerr Bustabad 1,3-Butylene Glycol Evaluate alternate catalysts Bustabad Minimize V-778 wash-outs Bustabad Trimethylolpropane Update unit lab analyses for sodium Bustabad Identify major unknowns in product Jasek Conduct Plant trials to optimize extractor Bustabad Resolve discrepancy between chemical OH and calculated OH values Glenister Estimated Completion Priority._________Date 1 Continuing 1 March 1983 2 June 1983 1 December 1982 1 November 1982 1 March 1983 1 February 1983 1 June 1983 1 December 1982 2 March 1983 1 March 1983 2 Continuing 1 November 1982 1 Continuing 1 July 1983 1 December 1982 003786 GDB-197-82 Page Fourteen November 5, 1982 Unit/Project Chemist Pentaerythritol Support resin-bed start-up Update unit lab analyses for sodium Identify UV-absorbing compound(s) Monitor low-formal shipments to Dow Evaluate alternate filter cloths Recover PE from VCI extract Akin Bustabad Jasek Akin Huelie Jasek Industrial Health Monitor methanol exposure Gary Monitor HCHO around Paraform Prilling Unit Gary HCHO exposure follow-up ' Gary Monitor nuisance dust in PE Gary Monitor silica in additional areas Gary Survey areas for miscellaneous organics Gary Miscellaneous Update Analytical Group sample schedule Glenister Synthesize 2-methyl-1,3- pentanediol for evaluation as a potential product Kerr Priority 1 1 1 1 2 .2 Estimated Completion Date November 1982 November 1982 Continuing Continuing December 1982 July 1984 2 January 1983 2 Continuing 2 Continuing 3 March 1983 3 March 1983 3 February 1983 1 November 1982 1 November 1982 003787