Document 91qmNOnvM271XLLyeB44Vyz0q

FILE NAME: Chemical Abstracts (CHAB) DATE: 1939 DOC#: CHAB016 DOCUMENT DESCRIPTION: Abstract Originally Published in 1938 by Dreesen 6471 Chemical Abstracts 6472 Vol. 33 ing symptoms of CtH poisoning had a decreased vitamin 1 10, 8 and G atm .; the max. pressure kept for 1 hr.) and C content in the blood, which was more pronounced the on the amt. and manner of the water added (with a 5 and more definite were the symptoms. Treatment with 7 atm. pressure the added water for each variant was 50, vitamin C prepns. greatly improved the condition of an 100, 150% of the abs. dry wt. of the raw material) was affected worker. Rabbits treated with vitamin C showed investigated. Analyses of the vapor phases and of the greater resistance to CtH, vapor than did normally fed ani resulting products were performed for each case. All mals. B. C. P. A. substances contained in the steam-gas mixt. obtained The effects of benzine and benzene on the human during the thermohydrolysis, in the dry powder obtained organism. W. Kretschmer. Umschau 43, 233-4(1939). 2 after the autoclave reaction, and in the steam-gas mixt. --A brief description of the patho-biological significance of obtained after the pressure reaction were detd. Con these common industrial chemicals and discussion of the clusions : COj is the main gas component of both phases; no manner in which they interfere with body chemical func traces of CO, CH( or of any unsatd. hydrocarbons were tions. H. Kwart found in the gas phase; the main component of the con Toxicology of dinitrotoluene and pathology in exposed densate was AcOH whose content was increased with an workers. Courlois-Suffit. Arch, maladies profession increase of the temp. and pressure; the amt. of lignin in nelles 1, 294-7(1939).--The principal toxic effect of the powder is increased; and the cellulose in the auto dinitrotoluene results from the inhalation of its vapors. clave reaction process is only slightly dccompd. The rate of absorption in workers who are chronic alco- 3 _ __ _ W. R. Henn holies is greatly increased. The principal effect is on the The investigation of the physical factors in the pressve nervous system and the blood. The author reviews his reaction of Barkalite powder. A. G. Natradze. Trtmy experience with this chemical in powder mills. Nauch.-Issledovatel. Lab. i Op. Stantsii Barkalaitu 1937, William G. Fredrick 01-79; Khim. Referat. Zhur. 1, No. 7, 85-0(1938).-- Affections due to organic mercury compounds. F. Pine sawdust was used in most cases to investigate the Koelsch. Arch. Gewerbepath. Gewerbehyg. 8, 113-10 influence of the size of the particles in the raw material (1937).--Org. Hg compounds such as are used for seed- and of the temp, and pressure on the plasticization process. dressings may, by const, handling, produce (a) affections The sawdust was treated thermohydrolytically at 7 atm. of skin and upper respiratory tract due to the mech. action * for 2 hrs. with an amt. of water equa to 150% of the of the dust, (6) affections of the central nervous system due abs. dry wt. The powder obtained was dried to a 0.95% to absorption, coupled with local damage to the organs moisture content, and was sifted through sieves having in which the compds. are decompd. and Hg is deposited. 289, 110, 72 and 48 meshes/sq. cm. The final distribution B. C. P. A. of the particles depends more on the properties of the The significance of chemical data in the pathology of initial material than on the applied pressure. The heat minerals producing pneumoconioses. A. Policard. Arch, phenomena occurring during the compressing were studied maladies professionnelles 1, 473-88(1938).--A discussion in a specially constructed app. The substances in of the significance of analytical data in the study of 5 vestigated were either raw or autoclave-treated saw pneumoconiosis. 20 references. William G. Fredrick dust (pine, birch) and other materials (straw, rice husks, A study of asbestosis in the asbestos textile industry. corncobs). The autoclave conditions were: temp. 180, Waldemar C. Dreessen, J. M. Dallavalle, Thomas I. pressure 10 atm., time 2 hrs. A specific pressure of 300 Edwards, J. W. Miller, R. R. Sayers, H. F. Easom kg./sq. cm. was used. The raw sawdust was pressed at a and M. F. Trice. U. S. Pub. Health Bull. No. 241, 120 temp, below or near the critical point of the exothermic pp. (1938).--Medical examn. of 447 workers in 3 plants reaction. The temp.-time diagrams for different places exposed to appreciable amts, of asbestos dust showed an of the samples are represented in 8 diagrams. Two cstd. asbestosis incidence of 27.5%. Asbestosis rarely pictures of the app. used are given. W. R. H. appears in workers exposed to less than 5 million particles 6 The influence of plasticizers and of softeners on the per cu. ft. of asbestos dust (light field count). Above plastic properties of Barkalite. A. M. Bogdanov. Trudy this value the incidence and severity of the disease is a Nauch.-Issledovatel. Lab. i Op. Stantsii Barkalaitu 1937, function of dust concn. and exposure time. Symptoms, 110-35; Khim. Referat. Zhur. 1, No. 7, 85(1938).--A case histories, autopsy data, manufg. procedures and series of expts. was performed with pine sawdust to ob many illustrations are given. 70 references. tain Barkalite powder and to investigate the action on this William G. Fredrick powder of phenol, furfural, a mixt. of phenol and glucose, A simple respiratory protective device for industrial hexamethylenetetramine, HjSO<, HjPO< and of wood purposes. E. Eigenberger. Ghent ,-Z.tg. 63, 238(1939).-- and artificial resins. Powders which were acted upon A simple supplied-air type respirator with a fully trans under pressure and plasticized with phenol and with fur parent face piece is described and illustrated along with an fural showed less water and acid resistance in the final electrically operated device for supplying it with fresh product. The phenol and glucose mixt. greatly increases filtered air at a rate of 1-2 l./scc. William G. Fredrick the viscosity, permitting the manuf. of figured articles Personalized protection. Edward R. Granniss. (nd. with fewer defects. A 0.3% HjSO< soln. or a 0.9% Eng. Chem. 31, (104-72(1939).--A crit. discussion of per H>PO< soln. improves the mech. properties, and has a sonal protective equipment suitable for use in the chem. smaller water and acid resistance. Samples of articles industry. Methods for using, maintaining and storing made from the Barkalite powder prepd. in the presence of such devices as respirators, goggles, canister gas masks, 8 sedimental resin were compared with those made of the protective clothing as well as indications for their use are pure Barkalite powder. They showed worse mech. given. William G. Fredrick properties and a greater stability to water, to acids and Plastic and synthetic materials. J. Jacobs. Rev. to alkalies. The addn. of different resins produced prod gen, caoutchouc 16, 130-6(1939).--A review and discussion ucts with different compns., some of which were suitable for dealing with the present-day meaning of plastics and some insulating purposes. W. R. Henn of the important derivs. of cellulose. C. C. Davis Mechanism of drying technical casein. V. D. Surkov. Pigments, lakes and other coloring materials in plastics. Colloid J. (U. S. S. R.) 4, 705-9(1938).--The rate of T. H. Clewell and H. W. Paine. Paint Varnish Produc evapn. of HsO from casein and of contraction of casein tion Mgr. 18, 312-15(1938).--Methods of pigmentation of 9 grains was detd. It is slightly increased by an air current. cellulose ester plastics and the choice of pigments therefor J. J. Bikerman are discussed. B. C. P. A. Silica aerogel--effect of variables on its thermal con The investigation of the thermohydrolysis process of ductivity. J. F. White. Ind. Eng. Chem. 31, 827-31 plant materials. M. N. Plungyanskaya and M. G. Gan. (1939).--The structure, prepn. and previous data on the Trudy Nauch.-Issledovatel. Lab. i Op. Stantsii Barkalaitu cond. of silica nerogcl are reviewed. At higher temps, the 1937, 33-47; Khim. Refcral. Zhur. 1, No. 7, 85(1938).-- material transmits radiation. The addn. of opacifying The dependence of the physicochcm. properties of Barka- agents was investigated. Red transparent admixts., lite on the autoclave conditions (with a pressure of 14, 12, opaque nunrcfiective substances and materials exhibiting