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  • ISO 1388-9-1981 - 中外标准 - - 1981/12 - 现行
    The method is applicable to products having esters contents in the range 0.005 % (m/m) to 0.15 % (m/m). The principle consists in the saponification of esters present in a test portion by boiling with excess standard volumetric sodium hydroxide solution; determination of the residual sodium hydroxide, and hence the amount used for saponification, by titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    试验酒精工业产品滴定法含量测定皂化乙醇Determination of contentEstersEthanolEthyl alcoholIndustrial productsTestingTestsTitration
  • ISO 1388-5-1981 - 中外标准 - - 1981/12 - 现行
    The method is applicable to products having aldehyde contents in the range 0.00025 % (m/m) to 0.00125 % (m/m). The principle is based on the reaction of the aldehydes present in a test portion with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of acetaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    试验酒精比色法工业产品比色分析含量测定乙醇ColorimetryDetermination of contentEthanolEthyl alcoholIndustrial productsTestingTests
  • ISO 1388-11-1981 - 中外标准 - - 1981/12 - 现行
    The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    试验工业产品乙醇酒精糠醛EthanolEthyl alcoholFurfuralIndustrial productsTestingTests
  • ISO 1388-4-1981 - 中外标准 - - 1981/12 - 现行
    The method is applicable to products having carbonyl compounds contents equal to or greater than 0.01 % (m/m). The method only allows determination of those carbonyl compounds which react under the specified conditions. The principle is based on the reaction of hydroxylammonium chloride with the carbonyl compounds in a test portion and titration of the hydrochloric acid formed with standard volumetric sodium hydroxide solution, in the presence of bromophenol blue as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    酒精测定试验乙醇羰基化合物羰基化合物(无机)工业产品滴定法Carbonyl compounds (inorganic)DeterminationEthanolEthyl alcoholIndustrial productsTestingTestsTitration
  • ISO 1388-3-1981 - 中外标准 - - 1981/12 - 现行
    The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    试验酒精分光光度测量分析分光光度法工业产品羰基化合物(无机)羰基化合物乙醇含量测定Carbonyl compounds (inorganic)Determination of contentEthanolEthyl alcoholIndustrial productsSpectrophotometryTestingTests
  • ISO 1388-12-1981 - 中外标准 - - 1981/12 - 现行
    The principle is based on the addition of a test portion, under specified conditions, of potassium permanganate solution. Determination of the time taken for the colour of this test solution to match that of a cobalt(II) chloride and uranyl nitrate colour standard. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    酒精测定试验高锰酸钾时间乙醇钾无机化合物工业产品高锰酸盐DeterminationEthanolEthyl alcoholIndustrial productsPermanganatesPotassium inorganic compoundsPotassium permanganateTestingTestsTime
  • ISO 756-1-1981 - 中外标准 - - 1981/12 - 现行
    Gives general intructions and specifies the methods for the determination of density at 20 °C, for the determination of boiling range, for the determination of dry residue after evaporation on a water bath, for the measurement of colour, for the determination of water content and of aldehydes and ketones content. International Standards ISO 756/1, ISO 756/2 and ISO 756/3 cancel and replace ISO Recommendation R 756-1968 of which they constitute a technical revision.
    通则丙烷试验工业产品总论General sectionIndustrial productsPropaneTestingTests
  • ISO 756-2-1981 - 中外标准 - - 1981/12 - 废止
    The principle consists in dilution of a test portion with carbon dioxide-free water, titration of the acidity with standard volumetric sodium hydroxide solution, in the presence of phenolphthalein as indicator. The method is applicable to products having an acidity, expressed as acetic acid, equal to or greater than 0,0006 % (m/m).
  • ISO 5277-1981 - 中外标准 - - 1981/11 - 废止
    Applicable to products having boiling points lower than or equal to 150 0C. The lower limit of detection is 1 mg/100 ml. Based on evaporation of a test portion in a weighed dish, and determination of the increase in mass of the dish, which represents the residue.
  • ISO 1388-7-1981 - 中外标准 - - 1981/11 - 现行
    The principle is based on the conversion of methanol present in a test portion to formaldehyde by oxidation. The oxidation is carried out with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with chromotropic acid (4,5-dihydroxynaphthalene-2,7-disulphonic acid). Photometric measurement of the violet coloration obtained at a wavelength of about 570 nm. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
    试验酒精工业产品分光光度法含量测定分光光度测量分析甲醇乙醇Determination of contentEthanolEthyl alcoholIndustrial productsMethyl alcoholSpectrophotometryTestingTests
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