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• Alcohols

1974

CIS 75-470 Herbolsheimer R., Funk L.
Gas chromatographic determination of trichloroethylene, trichloroethanol, trichloroacetic acid and ethanol in one analytical procedure from one sample
Gaschromatographische Bestimmung von Trichloräthylen, Trichloräthanol, Trichloressigsäure und Äthanol in einem Analysengang aus einer Probe [en alemán]
Description of a new method for successive determination of trichloroethylene, trichloroethanol, trichloroacetic acid and ethanol in a single blood or urine sample: principle of the analytical method, determination procedure, calibration, sensitivity and reproducibility. The possibility of quantitative determination from a sample as small as 10µl blood permits repeated capillary blood sampling for systematic concentration studies over a period of time. The blood samples may be kept in closed vials for several days without changing the results.
Archiv für Toxikologie, 1974, Vol.32, No.3, p.209-215. Illus. 4 ref.

CIS 75-465 Truhaut R., Dutertre-Catella H., Phu Lich N., Ngoc Huyen V.
Contribution to the toxicological study of primary n-heptyl alcohol
Contribution à l'étude toxicologique de l'alcool n-heptylique primaire. [en francés]
Study of the acute toxicity of primary n-heptyl alcohol by different routes, including its irritant effect on the eye and skin of rats and rabbits. The results are given in tabular form and compared with those of methanol and dodecanol, closely-related alcohols. Conclusions: acute toxicity of open-chain alcohols by the pulmonary route is relatively minor; primary n-heptyl alcohol occupies an intermediate place in the acute toxicity scale and the index of degree of irritation of the alcohols.
Archives des maladies professionnelles, Apr.-May 1974, Vol.35, No.4-5, p.501-509. 20 ref.

CIS 75-482 Occupational leucoderma.
A number of phenol and catechol compounds widely used in industry can produce cutaneous depigmentation when applied topically to the skin. Outbreaks of leucoderma have occurred in workers exposed to para-tertiary butylphenol and butylcatechol and in hospital workers exposed to phenols in germicidal disinfectants. Chemical workers engaged in the production of alkyl phenols are also at risk. Further research is needed to clarify the mechanism by which these compounds can induce cutaneous depigmentation.
Lancet, Oct. 1974, Vol.2, No.7885, p.879. 9 ref.

CIS 75-169 Bajkov B.K., Gorlova O.E., Gusev M.I., Novikov Ju.V., Judina T.V., Sergeev A.N.
Determination of the maximum allowable concentration, time-weighted for a day, of propyl and isopropyl alcohols in the air
Gigieničeskoe normirovanie srednesutočnyh predel'no dopustimyh koncentracij propilovogo i izopropilovogo spirtov v atmosfernom vozduhe [en ruso]
Results of physiological, biochemical, haematological and pathomorphological studies in animals. Propyl and isopropyl alcohols can reach concentrations of 0.3 and 0.6mg/m³, respectively, over 24h without having noxious effects on conditioned reflexes, blood enzyme activity, blood nucleic acid levels, etc. The authors recommend that these levels be adopted as maximum allowable concentrations.
Gigiena i sanitarija, Apr. 1974, No.4, p.6-13. Illus. 4 ref.

CIS 74-1974 Malygina E.F., Cendrovskaja V.A.
Determination of sodium pentachlorophenolate in air by thin-layer chromatography
Opredelenie pentahlorfenoljata natrija v atmosfernom vozduhe metodom tonkoslojnoj hromatografii [en ruso]
Description of a method based on the reaction between sodium pentachlorophenolate (SPCP) and silver on a thin layer of silica gel. The eluting agent used is a 3:2 mixture of dioxan and methanol. The sensitivity of the method is 0.7µg on the plate. The concentration of SPCP is determined by comparing the colour of the stain from the sample with standard stains produced by a control solution.
Gigiena i sanitarija, Mar. 1974, No.3, p.71-72. 1 ref.

CIS 74-1926 Traiger G.J., Plaa G.L.
Chlorinated hydrocarbon toxicity - Potentiation by isopropyl alcohol and acetone.
In experiments with mice it was shown that pre-treatment with isopropyl alcohol or acetone augmented the hepatotoxicity of chloroform, 1,1,2-trichloroethane and trichloroethylene. The most marked potentiation was seen with chloroform. There was no augmentation of hepatic dysfunction with 1,1,1-trichloroethane. The study indicates that the ability of isopropyl alcohol or acetone to potentiate the hepatotoxicity of chlorinated hydrocarbons is proportional to the basic hepatotoxicity of the solvent involved.
Archives of Environmental Health, May 1974, Vol.28, No.5, p.276-278. 10 ref.

CIS 74-2069 Mundy R.L., Hall L.M., Teague R.S.
Pyrazole as an antidote for ethylene glycol poisoning.
Pyrazole, a potent alcohol dehydrogenase inhibitor, given intraperitoneally to mice in a single dose of 300mg/kg, increased significantly the LD₅₀ of orally-administered ethylene glycol. It appears to act like ethanol in preventing conversion of glycol to more toxic metabolites. Although pyrazole is a toxic chemical and may cause damage in several organs in experimental animals, the compound has been used in experimental studies in man; its use on a one-time basis in life-threatening poisoning might be an acceptable risk.
Toxicology and Applied Pharmacology, May 1974, Vol.28, No.2, p.320-322. 12 ref.

CIS 74-1694 Le Bourdon A.
Occupational depigmentations - A clinical case
Les dépigmentations professionnelles (à propos d'un cas clinique). [en francés]
MD thesis. Description of a case of leukoderma of the hand involving a black worker using a hydroquinone developer. Review of the chemical substances responsible (hydroquinone, p-tolyl hydroquinone, p-tert-butylphenol, p-tert-butylpyrocatechol, 4-chloro-2-phenoxyphenol, propoxyphenol) and cases previously described in the medical literature. Problems of diagnosis, physiopathological hypotheses, biochemical mechanisms and stages of melanogenesis, treatment and prevention. The profound psychological effects of these types of leukoderma are emphasised, especially among black subjects on account of their resemblance to achromic leprosy.
Université de Paris VI, Faculté de médecine Broussais - Hôtel-Dieu, Paris, France, 1974. 33p. Illus. 43 ref.

CIS 74-1673 Mahaffey K.R., Goyer R.A., Wilson M.H.
Influence of ethanol ingestion on lead toxicity in rats fed isocaloric diets.
An experiment was carried out to study the effect of ethanol ingestion on susceptibility to lead under conditions of controlled nutrient intake. The synergistic effect of alcohol on lead toxicity is slight when compared to the influence of previously studied nutritional factors such as calcium and iron. The study suggests that the clinically-suspected synergism between alcohol consumption and lead poisoning, sometimes observed among industrial workers, is more likely due to nutritional factors than to mutual enhancement of their closely-related cellular effects.
Archives of Environmental Health, Apr. 1974, Vol.28, No.4, p.217-222. Illus. 27 ref.

1973

CIS 74-1951 Lepší P.
A simple chemical method for determining ethylene glycol in air
Jednoduchá chemická metoda na stanovení etylénglykolu v ovzduší [en checo]
The method described is based upon the oxidation of ethylene glycol by periodic acid in a dilute sulfuric acid medium. The formaldehyde produced by the oxidation is determined by polarography in a medium of excess lithium hydroxide, which simultaneously removes any remaining periodic acid. The method may be used to determine concentrations of ethylene glycol between 0 and 200µg/10ml of solution. Air samples are obtained by using frit absorbers. The absorbent solution used is distilled water.
Pracovní lékařství, Sep. 1973, Vol.25, No.8, p.330-332. 11 ref.

CIS 74-1917 Dehne H., Wozniak K.D.
Toxic and sensitising properties of substances containing trichloromethylmethanol
Toxische und sensibilisierende Eigenschaften von substituierten Aryl-trichlormethylcarbinolen [en alemán]
A review of the specific biologically harmful properties linked to the structure of substances containing trichloromethylmethanol, followed by an account of cases of skin lesions noted during the manufacture of these substances. The evolution and clinical picture of these skin disorders correspond to those of contact eczema of allergic origin. Concentrations of 0.1% are considered sufficient to produce an epicutaneous sensitisation; concentrations of 10% are sufficient to produce skin lesions.
Zeitschrift für die gesamte Hygiene und ihre Grenzgebiete, July 1973, Vol.19, No.7, p.535-538. Illus. 17 ref.

CIS 74-1686 Dubejkovskaja L.S., Asanova T.P., Rozina G.Ju., Budanova L.F., Zenkevič E.S., Revnova N.V., Gorn L.Ė.
Hygienic assessment of ethylene glycol during the manufacture of certain electronic components
Gigieničeskoe značenie ėtilenglikolja v proizvodstve nekotoryh radiodetalej [en ruso]
Determinations carried out in the atmosphere of 2 electronic components manufacturing workshops showed that the mean concentration of ethylene glycol at critical points was 49mg/m³. No cases of occupational ethylene glycol poisoning were found, but the subjective symptoms noted (headaches, general asthenia, fatigue, etc.) and the functional disorders of the nervous system observed in almost half of the exposed workers point to the neurotoxic effect of this substance. A TLV of 5mg/m³ is recommended.
Gigiena truda i professional'nye zabolevanija, Oct. 1973, No.10, p.1-4. 3 ref.

CIS 74-1681 Gabovič R.D., Miščenko V.G.
Results of a complex evaluation, from the health point of view, of basic products used in the synthesis of aliphatic cyclic epoxy resins
Opyt kompleksnogo gigieničeskogo izučenija ishodnyh produktov sinteza cikloalifatičeskih ėpoksidnyh smol [en ruso]
Results of animal experiments to determine the toxic effects (LD₅₀, chronic effects on the nervous system, liver, cerebral and renal tissue, blood sugar rate, phagocytosis of neutrophiles and pathological morphology of the internal organs and the upper airways) of tetrahydrobenzaldehyde (THBA), cyclohexenecarboxylic acid tetrahydrobenzylic ester (CATE) and 3-cyclohexene-1,1-dimethanol (CHDM), used in the synthesis of aliphatic cyclic epoxy resins. On the basic of these results, the following maximum allowable concentrations have been established: 0.3mg/m³ for THBA, 1mg/m³ for CATE and 2mg/m³ for CHDM.
Gigiena i sanitarija, June 1973, No.6, p.16-22. 3 ref.

CIS 74-1631 Bajkov B.K., Hačaturjan M.H.
Industrial hygiene evaluation of the effect of low atmospheric concentrations of butyl alcohol on the reflexes
Gigieničeskaja ocenka reflektornogo dejstvija na organizm malyh koncentracij butilovogo spirta, postupajuščego v atmosfernyj vozduh [en ruso]
Results of studies with human subjects aimed at elucidating the effect of inhaling weak concentrations of butyl alcohol on certain reflexes. The study of retinal dark adaptation, chronaxie (conditioned reflex reaction time) and the electrical activity of the cerebral cortex demonstrated that liminal and subliminal concentrations of butyl alcohol (2.5 and 0.5mg/m³) alter these reflexes. A concentration of 0.1mg/m³ had no effect. This latter value is proposed as the TLV for a single exposure.
Gigiena i sanitarija, Dec. 1973, No.12, p.7-11. Illus. 8 ref.

CIS 74-1619 Pjatnickaja L.V., Volodčenko V.A., Vasilenko N.M., Manfanovskij V.V., Prilipskij Ju.V.
Data for the establishment of the maximum allowable atmospheric concentration of betanaphthol in work premises
Materialy k obosnovaniju predel'no dopustimoj koncentracii beta-naftola v vozduhe proizvodstvennyh pomeščenij [en ruso]
The inhalation of betanaphthol, which is used in the cold dying of textiles and as a fungicide, leads to disorders of the urinary tract (cystitis and dysuria). Gastritis and chronic hepatitis as well as functional disorders of the nervous system were also found in numerous workers exposed to this substance. From the results of research with animals and observations made in industry, a maximum allowable atmospheric concentration of betanaphthol of 0.1mg/m³ is recommended.
Gigiena i sanitarija, Oct. 1973, No.10, p.15-18. 4 ref.

CIS 74-1338 Bajkov B.K., Hačaturjan M.H., Borodina E.V., Fel'dman N.G., Tambovceva A.M.
Basis for the establishing of a maximum allowable air concentration of amyl alcohol
Materialy k gigieničeskomu normirovaniju amilovogo spirta v atmosfernom vozduhe [en ruso]
Results of human and animal studies aimed at establishing an olfactory threshold (0.2-0.4 mg/m³) and the TLV for primary amyl alcohol. The research, described in detail, has led to setting both the ceiling value (single exposure) and the threshold value (8-h exposure) at 0.01 mg/m³.
Gigiena i sanitarija, Sep. 1973, No.9, p.10-14. Illus. 2 ref.

CIS 74-1103 Stuneeva G.I.
Conditions for application and toxicological properties of a mixture comprising Kelthane, chlorophos and copper oxychloride
Sanitarno-gigieničeskie uslovija primenenija i toksikologičeskie svojstva smesi, sostojaščej iz kel'tana, hlorofosa i hlorokisi medi [en ruso]
The author examined 152 persons (tractor drivers, market gardeners and farm workers) who had applied a mixture of insecticides during periods of 4 to 5 days with intervals of 15 to 20 days. The duration of daily exposure had been 8 to 10 h. The most significant symptoms of poisoning related to the blood (erythropenia, lowering of haemoglobin concentration, neutropenia, eosinophilia and leucopenia). It is recommended to make tractor cabins impervious and to supply them with purified and cooled air. The preparation of the mixture should be as fully mechanised as possible to avoid all contact with the pesticide.
Gigiena i sanitarija, Aug. 1973, No.8, p.101-103. 4 ref.

CIS 74-766 Vinogradova V.K., Kaljaganov P.I., Sudonina L.T., Elizarov G.P.
Health aspects of working conditions of persons engaged in the production of sodium pentachlorophenolate
Gigieničeskaja harakteristika uslovij truda i sostojanie zdorov'ja rabočih v proizvodstve pentahlorfenoljata natrija [en ruso]
A number of workers who had been employed for 2 to 6 years in the production of sodium pentachlorophenolate (antiseptic and pesticide) showed symptoms of chronic discrete poisoning which are described in detail. To improve hygienic conditions, the authors recommend that continuous production methods should be adopted, sampling techniques should be improved, plant equipment should be made more airtight, adequate ventilation provided and high standards of personal hygiene observed.
Gigiena truda i professional'nye zabolevanija, Aug. 1973, No.8, p.11-13. 3 ref.

CIS 74-752 Scala R.A., Burtis E.G.
Acute toxicity of a homologous series of branched-chain primary alcohols.
The acute toxicity of 8 primary aliphatic alcohols amyl, hexyl, isooctyl, 2-ethylhexyl, isononyl, decyl, tridecyl and hexadecyl) containing 5, 6, 8, 9, 10, 13 and 16 carbon atoms was investigated in the rat. The tests included oral and percutaneous LD₅₀, eye and skin irritation and 6-h vapour exposure. The results are presented in tabular form and discussed. Eye irritation was rather severe with most alcohols, but inhalation toxicity was low. Systematic effects were noted with amyl, 2-ethylhexyl and isononyl alcohols.
American Industrial Hygiene Association Journal, Nov. 1973, Vol.34, No.11, p.493-499. 11 ref.

CIS 74-457 Imamura T., Ikeda M.
Lower fiducial limit of urinary metabolite level as an index of excessive exposure to industrial chemicals.
A discussion of the utilisation of the lower confidence limit (p=0.10), rather than the mean urinary metabolite level, as an index of excessive exposure to industrial chemicals. Cases of exposure to trichloroethylene, phenol and toluene are used to illustrate this approach.
British Journal of Industrial Medicine, July 1973, Vol.30, No.3, p.289-292. Illus. 21 ref.

CIS 74-455 May G.
Chloracne from the accidental production of tetrachlorodibenzodioxin.
Following the accidental production of 2,3,7,8-tetrachlorodibenzodioxin (dioxin) due to an exothermic reaction at a plant manufacturing 2,4,5-trichlorophenol, 79 cases of chloracne were recorded, many of them severe. Similar incidents are known to have occurred both in Europe and the USA, often resulting in widespread illness and even deaths. A new plant now in operation for 3 years is designed in such a way that an exothermic reaction is not possible. The trichlorophenol which is produced is tested for dioxin contamination by instantaneous gas-liquid chromatography.
British Journal of Industrial Medicine, July 1973, Vol.30, No.3, p.276-283. Illus. 14 ref.

CIS 74-296
Minister of State for Social Affairs, Paris, France.
Decree No.73-215 of 23 February 1973 to revise and supplement the schedule of occupational diseases annexed to Decree No.46-2959 of 31 December 1946
Décret n° 73-215 du 23 février 1973 revisant et compléant les tableaux de maladies professionnelles annexés au décret n°46-2959 du 31 décembre 1946. [en francés]
This decree, which came into force on 2 Mar. 1973, adds to the statutory list of occupational diseases the following new tables (Nos.59 to 63): occupational poisoning due to hexane; occupational poisoning due to pentachlorophenol or sodium pentachlorophenolate; diseases due to cadmium and its compounds; diseases due to organic isocyanates; diseases due to proteolytic enzymes. Table No.34 is amended. [The text of this decree is also reproduced in Travail et sécurité, Paris, Mar. 1973, No.3, p.223-227, with comments, followed by the text of the administrative circular of 7 Mar. 1973 on this subject].
Journal officiel de la République française, 2 Mar. 1973, No.52, p.2321-2322.

CIS 74-150 Imamura T., Ikeda M.
A time-saving procedure for the determination of total trichloro-compounds in human urine samples.
A modification (Tanaka and Ikeda, 1968) of the original method of Seto and Schultze (1956) has been further improved, by utilising the heat in a boiling water bath for both the oxidation and colour development. As a result, the determination of total trichloro-compounds in human urine could be carried out within one hour.
Internationales Archiv für Arbeitsmedizin - International Archives of Occupational Health, 31 Aug. 1973, Vol.31, No.4, p.333-338. Illus. 9 ref.

1972

CIS 75-127 Zlateva M., Hadjieva Y.
Histological changes in the internal organs of experimental animals under the effect of phenol.
Account of animal experiments carried out to study the histological and histochemical changes induced by a single dose of phenol (1/10 of the lethal dose 50 = 0.18g/kg) in the liver, lungs, myocardium, aorta and small intestine. The authors observed dystrophic, and sometimes even necrotic, liver cell changes which were particularly evident 35 days after the administration of phenol. The changes observed in the tissues of the other organs showed that phenol is not only hepatotoxic, but also affects other parenchymatous organs including the large arteries.
Works of the United Research Institute of Hygiene and Industrial Safety, 1972, Vol.23, p.109-118. Illus. 13 ref.

CIS 72-2514 Bruckner J.V., Guess W.L.
Morphological skin reactions to 2-chloroethanol
2-Chloroethanol and ethanol are acutely toxic to various animal tissues. This study was undertaken to assess more accurately the nature of the damage to the dermal and epidermal structures of rabbits. A classical inflammatory reaction was noted, accompanied by coagulative necrosis in zones of higher alcoholic concentration. Degenerative subcellular changes were also revealed by electron microscopy. Both ethanol and 2-chloroethanol exerted similar effects, although the latter was always more potent.
Toxicology and Applied Pharmacology, May 1972, Vol.22, No.1, p.29-44. Illus. 27 ref.

CIS 72-2078 Morel C., Cavigneaux A.
Institut national de recherche et de sécurité
Cresols - CH₃C₆H₄OH
Crésols - HO-C₆H₄-CH₃ [en francés]
Uses, physical and chemical properties of the ortho, meta and para-cresol isomers, storage containers, fire hazards, pathological and toxic effects, detection and analysis in air. Reference to the relevant French legislation concerning occupational safety and health, environmental protection and transport. Recommendations for engineering and medical safety measures.
Cahiers de notes documentaires - Sécurité et hygiène du travail, 2nd quarter 1972, No.67, Note No.797-67-72, p.247-250. 17 ref.

CIS 72-2472 Piotrowski J.K.
Certain problems of exposure tests for aromatic compounds
A review of studies of the Lodz Institute of Occupational Medicine (Poland). The compounds studied were: benzene; toluene; phenol; aniline; and nitrobenzene. Particular reference is made to absorption routes; excretion kinetics; exposure-test types and accuracy.
Pracovní lékařství, Mar. 1972, Vol.24, No.2-3, p.94-97. 21 ref.

CIS 72-2773
(Hauptverband der gewerblichen Berufsgenossenschaften)
Preventive medical examination criteria - Methyl alcohol hazards
Berufsgenossenschaftliche Grundsätze für arbeitsmedizinische Vorsorgeuntersuchungen - Gefährdung durch Methanol [en alemán]
Points of reference for medical examinations designed for the prevention or early detection of methyl alcohol-induced disease. Information is given on the scope of pre-employment and periodic medical examinations, and occupational medical criteria are provided on the fitness of persons for employment in work where there is danger of exposure to methyl alcohol. Data are given on the physical and chemical properties of methyl alcohol, threshold limit values, sources of exposure, absorption and mode of action, and the clinical picture of methyl alcohol poisoning.
Arbeitsmedizin - Sozialmedizin - Arbeitshygiene, June 1972, Vol.7, No.6, p.174-175. 7 ref.

CIS 72-2675 Properties and essential information for safe handling and use of isopropyl alcohol
Data sheet. Isopropyl alcohol (also known as 2,propanol, dimethylcarbinol or isopropanol) is a flammable liquid which at ordinary temperatures releases vapours which can form explosive mixtures with air. Prolonged exposure to high concentration can present serious hazards to health. Isopropyl alcohol is also severely irritating to the eyes. Properties and engineering control measures, precautions concerning personnel, safety measures in shipping, handling and storage, cleaning and repairs of tanks and equipment, and advice on toxicity, first aid and the medical management of poisoning and injuries.
Manufacturing Chemists' Association, 1825 Connecticut Avenue, N.W., Washington, D.C. 10009, USA, 1972. 18p.

CIS 73-34 Urban H.J.
Acute percutaneous phenol poisoning
Die akute resorptive Phenolvergiftung [en alemán]
Paper read at the 1st International Symposium of Plant Physicians of the Chemical Industry (Ludwigshafen, 27-29 April 1972). Report of a fatal case of phenol poisoning with severe central nervous system damage and respiratory and cardiac paralysis. The circumstances of the accident (removal of a valve from a piping system) and the post-mortem and tissue-analysis findings are given. First aid of phenol contamination by irrigation with water at the site of the accident is controversial. (For the complete proceedings of this symposium, see CIS 73-32.)
I. Internationales Symposium der Werksärzte der chemischen Industrie, Medichem, BASF Ärztliche Abteilung, 67 Ludwigshafen, Federal Republic of Germany, 1972. 4p.

CIS 73-35 Henschler D.
(I. Internationales Symposium der Werksärzte der chemischen Industrie)
Therapy for percutaneous phenol poisoning
Therapiemöglichkeiten bei perkutaner Phenolvergiftung [en alemán]
Paper read at the 1st International Symposium of Plant Physicians of the Chemical Industry (Ludwigshafen, 27-29 April 1972). Emergency treatment of skin contact with phenol is a controversial matter and animal experiments were undertaken to clarify the situation. It was found that irrigation with water has an considerable detoxifying effect. Polyethyleneglycol 400 had the most pronounced effect by far; polyethyleneglycol 300 also proved highly effective. It is recommended that phenol skin contamination should be treated by brief water irrigation followed by decontamination with polyethyleneglycol. Intravenous administration of sodium bicarbonate is advocated in in very severe cases. (For the complete proceedings of this symposium, see CIS 73-32).
Medichem, BASF Ärztliche Abteilung, 67 Ludwigshafen, Federal Republic of Germany, 1972. 4p.

CIS 73-886 Egorov J.L.
Maximum allowable concentrations of a series of aliphatic alcohols in the workplace atmosphere
Predel'no dopustimye koncentracii rjada alifatičeskih spirtov v vozduhe rabočej zony [en ruso]
Description of animal experiments to determine the toxic action of fatty alcohols on the central nervous system, by the use of new methods (electroretinography, determination of retinocortical time with electroretinogram and electroencephalogram recordings). On the basis of the results obtained - which are presented in graph form - the authors propose a MAC of 5mg/m³ for methyl alcohol and of 10mg/m³ for propyl, butyl and amyl alcohol.
Gigiena i sanitarija, Sep. 1972, Vol.50, No.9, p.17-22. Illus. 18 ref.

CIS 73-1377 Heistand R.N., Todd A.S.
Automated determination of total phenol in urine
A fully automated method has been developed to determine total phenol in urine. The reagents include a buffer solution, sulphuric acid, 4-aminoantipyrine and an oxidant. The analytical procedure involves hydrolysis of conjugated phenols and steam distillation, followed by colorimetric phenol determination in the distillate. Urine samples (1-2mL) are run sequentially at the rate of 10 per hour; the precision obtained is 1.6ppm per litre. The method could be used routinely to assess benzene exposure.
American Industrial Hygiene Association Journal, June 1972, Vol.33, No.6, p.378-381. Illus. 5 ref.

CIS 73-1628 Hovorka J.
Determination of ethylene glycol in air by polarography
Stanovení étylénglykolu v ovzduší polarografickou metodou [en checo]
Description of a method developed to determine ethylene glycol in the air of a factory producing Nitrosan 50. The method is based on splitting vicinal glycols by means of periodic acid. The reaction gives rise to formaldehyde and iodic acid which is freed from any periodic-acid excess by means of lithium hydroxide and determined by polarography. The presence of dinitro-o-cresol affects the determination by a deviation of about 3%, which is within the limits of reproducibility. The TLV which has been proposed for ethylene glycol in Czechoslovakia is 40µg/L; the method described in this article enables concentrations down to 1µg/L to be detected in air samples of 5L.
Chemický průmysl, Dec. 1972, Vol.22, No.12, p.628-630. Illus. 13 ref.

1971

CIS 72-2805 Nishitani N., Hara I.
Cases of leucomelanodermatosis caused by phenylphenol
Phenylphenol ni yoru hakuhan kokuhi sho no shorei [en japonés]
Report on a study carried out over a number of years of skin lesions in workers in a plant producing o- and p-phenylphenol from phenol-distillation residues. 16 cases of leucomelanodermatosis were found; these cases are briefly reviewed.
Japanese Journal of Industrial Health - Sangyō-Igaku, Apr. 1971, Vol.13, No.3, p.218-219. Illus. 9 ref.

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