Document 99ZVqmJb3eoEVMnqaMEMJBegq

FILE NAME: Chemical Abstracts (CHAB) DATE: 1955 DOC#: CHAB038 OCUMENT DESCRIPTION: Abstract Originally Published in 1955 by Doll r-<? i^sV 9195 Chemical Abstracts 9196 Vol. 49 Research Inst., Tokyo). J Chent. Soc. Japan, Ind. Chem. deaths in all, as compared with expected no. of 0.8, 7.6, Sect. 57, 781-4(1954).--The catalytic activity of Ni on 2 and 15,4, resp.; all cases of lung cancer were assoed. with kinds of AliOi carrier was examd. for the synthesis of ethyl- asbestosis. Conclusion: Lung cancer was a specific indus amine. The specific surface area and pore dimension dis trial hazard of certain I workers. The risk has become less tribution were measured by COi adsorption and Hg re- a as the duration of employment under the old dusty condi placement, resp. H adsorption characteristics at --100 to tions has decreased. Marion Horn Peskin +500 was also studied. The activity showed a max. at Burton's lead line at the gums in workers affected by lead approx. 8% Ni content. The results indicate that the most poisoning. Darid Gallo (Univ. Milan). Med. lavoro 46, active Ni catalyst has an intermediate cryst. size on the 39--45(1955).--The various parts of the Pb seam in lead carrier surface. Katsuya Inouye poisoning are described. A. E. Meyer Connection between activity, structure, and acidity of Lead excretion of lead hardeners in a modern Swedish magnesium silicate catalysts. N. A. Danilova. Trudy tool factory. K. G. Rignir, S. G. Sjoberg, O. Sjoholm, Inst. Khitn., Akad. Nauk Azerbaldshan. S.S.R. 13, 38-47 and R. Verterberg. Nord. Hyg. Tidskr. 1953, 41-7; (1954)(in Russian).--MgO-SiCh catalysts, prepd. by co- i Public Health Eng. Abstr. 33, No. 12, 11.--In lead hard pptn. (liquid glass mixed with MgSO< soln.) with different eners the amount of lead in the urine was higher thdn that concns. of the reactants, were examd. as to properties. of a control group. The porphyrin contents of the urine While the chem. compn. as such was substantially const, for and the basophilic-aggregate values of the blood were on the series, the phys. properties (apparent d., porosity) the same level as those of the control group. The exposure showed considerable differences, differences which were also- did not cause any evident symptoms of lead poisoning. reflected in their cracking activity in gasoline formation. R. D. H. The difference in activity was primarily a function of porosity. Two cases of lead poisoning in stonemasons. M. Oltra- No direct relation was found between acidity and activity. mare. Z. Unjalltned. u. Berufskrankh. 45, 282-8(1952); Catalysts prepd. from more coned, solns. were more stable e Public Health Eng. Abstr. 33, No. 10, 9(1953).--Some 50 at high temp. Thus the thermal deactivation results not years ago it was customary in Switzerland for many stone- only from structural change by HjO loss from a chemically built houses to be coated with layers of white lead. Pb bound form but also from alteration of the actual porosity. intoxication contracted by two stonemasons in the process G. M. Kosolapoff of renovating such buildings is described. Clinical and lab. A highly active nickel hydrogenation catalyst. W .- .findings for the 2 men were, resp., as follows: hemoglobin Langenbeck, H. Dreyer, and D. Nehring (Deut. Akad. 61, 70%; blood urea 50, 44 mg./lOO ml.; blood lead 140, Wiss., Berlin). Naturwissenschaflen41,332(1954).--Highly 122 7/IOO ml.; and urinarv coproporphvrin concn. 1350, active Ni catalysts are made by decompn. of mixed Ni and 450 v/24 hrs. ` R.D.H. Mg oxalates. A soln. of 25 g. Ni(N0a)2.6H20 and 225 g. The content of silica in the blood and urine of workers in Mg(N0j)2.6H20 in (500 cc. water is pptd. at 50 with a 0 dust-creating industries. R. Yu. Govorchuk (Ukrain. soln. of 122 g. (C02H)2.2H20 in 500 cc. water. The mixed Inst. Ind. Hyg. and Occupational Diseases). Bor'ba s crystals contain 23.9 mole % Ni oxalate and 70.1 mole % Silikozom, Akad. Nauk S.S.S.R ., Sbomik Statei 1953, Mg oxalate. After heating 4 hrs. at 350 in a H2 current 309-11.--The presence of Si02up to 10 mg. % in the blood a black pyrophoric powder results contg. Ni and undecompd. _ and up to 20 mg. % in the urine is to be regardedas normal. Mg oxalate. It hydrogenates 5 cc. cyclohexenc in 35 cc. 'Inhalation of free Si02 by the lungs increases its content benzene at room temp, and atm. pressure in 15 min., one in the blood and urine. No parallelism was discerned fifth the time required with Raney Ni. The rigid Mg oxa between the stages of progressive lung silicosis and the Si02 late skeleton probably contributes to the quality. content ot .he blood or urine. The rythrocytc sedimenta B. J. C. van der Hoeven 4 tion rate tends to increase as the Si02 blood content is Industrial atmosphere. V. Formaldehyde in the atmos increased. B. S. Levine phere of working environment. J. Roubal, J. Zdrazil, and F. Picha. Pracovni Lckarstvi 4, 283(1953); Public Analysis of phenols [in industrial effluents] (Commins) Health Eng. Abstr. 33, No. 8, 5; cf. C..4. 45, 285h.--The_ 7. Patent: Manuf. of silicone polymers without hydrolysis source of contamination of the air in work places where [for brake systems] (Guillissen) 31. glues with a HCHO-urea base are used is to be found in the free HCHO contained in resins. Quantities of 0.56 to 1*4% Catalyst. Mitchell S. Bielawski (to Universal Oil Products of free HCHO were found in glues examd. Technicians Co.). U.S. 2,704,747, Mar. 22, 1955. A solid catalyst maintain that the use of glues which do not contain free J1 is manufd. by (1) mixing over 50% by wt. of a phosphoric HCHO is not practicable. Where resins are produced, it acid, a siliceous adsorbent, and about 0.5 to 10% by wt. of is necessary to provide good ventilation. Free HCHO a Co oxide, hydroxide, or salt; and (2) drying and calcining remains for a long time on objects stuck together with the resultant mixt. The catalyst prepd. in this manner is synthetic glue or coated with a resin-contg. paste. Sites active in promoting org. reactions, such as the polymeriza- where such material is worked should contain adequate "" tion of olefins. P. J. Wilson, Jr. ventilation. It is best to use gas masks or respirators in Magnesia-calcium oxide-silica composites. Wm. A. places where HCHO is used in spraying hides for tanning. Pardee and Geo. E. Elliott, Jr. (to Gulf Research & De ' R. D. H. velopment Co.). U.S. 2,706,168, Apr. 12, 1955. A Poisoning occurring during the manufacture of bromo- .j MgO-CaO-Si02 composite contg. about 1-18% CaO is chloromethane. T. Hirokawa, I. Yokoyama, T. Ishikawa, subjected to the action of satd. steam at 250-600F. and and A. Kurisu. Bull. Inst. Public Health (Tokyo) 2, No. calcined. The lower temp, is used for a low-CaO and the 2, l-3(Sept., 1952); Public Health Eng. Abstr. 33, No. 12, higher temp, for a high-CaO composite. Examples are 16(1953).--Clinical descriptions of 3 cases of poisoning given showing that steaming results in a composite of during manuf. of CHjBrCl were given. No precautions-"increased d. and catalytic cracking^activity. N. E. J. were taken against extensive leakage from app. in which Improving the activity of chlorite solutions. Deutsche MeCl and MeBr were mixed to produce the required re Gold- und Silber-Scheideanstalt vorm. Roessler (Hermann action producing the final product. The final product Baier, inventor). Ger. 826,437, Jan. 3, 1952 (Cl. 8i, 2). and (or) MeCl were presumed to have caused the damage to circulatory system, liver, and nervous system. ' R.D.H. Mortality from lung cancer in asbestos workers. Richard Doll (Med. Research Council, London). Brit. J . Itui. Med. 12, 81-6(1955).--Among 105 persons who had been employed at one asbestos (I) works, and for whom the cause of death was detd. at autopsy, 18 showed lung can cer. Of these 18, 15 also showed asbestosis; these 15 had started employment in the industry before 1923 and had worked at least 9 yrs. before dust-control regulations had become effective. Among 113 men who had worked at least 20 yrs. in places where they were liable to be exposed to I dust, there were 11 deaths from lung cancer, 22 deaths 'from other respiratory and cardiovascular diseases, and 39 , Salts (I) of bi- or trivalent metals, such as Cu, Al, Mg, Ca, 1 or mixts. thereof, are added to an acid chlorite soln. (II) to improve its activity in bleaching, sterilizing, pest con trol, etc. The quantity of I added should amount to at least 0.01 g. Cu (preferably 0.05-0.1 g.) and at least 0.1 g. ---(preferably 0.5-1 g.) Mg, Al, or Ca perl. II. Whenllisused in bleaching fibrous materials (III), it is suitable to pretreat III with a soln. of I and then with II. The rise in activity of II is based on the fact that the quantity of C102normally . developed corresponding to 4NaC102 + 2HC1 --*2C102 + 1 NaClOi + 3NaCl + H20 is increased to 3 moles (from 4 moles NaC102) by the addn. of 0.1 g. Cu (as CuSOt) or 0.5 g. Mg (as MgSO) per 1. II (NaCIO; content 3.618 g./l.) at pH 3.6 and 60; or to 2.5 moles by the addn. of I g. Al [as A12(SOUi| or I g. Ca (as CaCh) per 1. II. A