G15 有机化工原料综合 标准查询与下载

ISO 755-3:1981 工业用正丁醇 试验方法 第3部分:硫酸色度试验

The principle consists in treatment of a test portion with sufphuric acid solution under specified conditions, comparison of the colour developed with that of the same volume of an agreed colour standard. By agreement between the interested parties, the colour developed may be measured in Hazen units (platinum-cobalt scale).

Butan-1-ol for industrial use; Methods of test; Part 3: Sulphuric acid colour test

ISO 755-2:1981 工业用正丁醇 试验方法 第2部分:酸度的测定 滴定法

The principle consists in titration of the acidity of a test portion with a standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. This document should be read in conjunction with ISO 755/1. International Standards ISO 755/1, ISO755/2 and ISO 755/3 cancel and replace ISO Recommendation R 755-1968, og which they constitute a technical revision. It as also been approved by the International Union of Pure and Applied Chemistry (IUPAC).

Butan-1-ol for industrial use; Methods of test; Part 2 : Determination of acidity; Titrimetric method

ISO 6796:1981 工业用聚乙二醇 羟值的测定 邻苯二甲酸酐酯化法

The hydroxy groups present in a test portion are esterified with phthalic anhydride. The excess phthalic anhydrids is hydrolyzed and the phthalic acid formed is neutralized with standard volumetric sodium hydroxide solution. If the sample contains free acidity or alkalinity a corresponding correction is made. From the corrected hydroxyl number, the apparat relative molecular mass may be calculated by a formula given.

Polyglycols for industrial use; Determination of hydroxyl number; Phthalic anhydride esterification method

ISO 6191:1981 工业用轻烯烃 微量水的测定 卡尔·费休法

This international Standard specifides the manner of application of the Karl Fischer method for the determination of traces of water in light olefins from C2 to C4 for industrial use. The methos is applicable to products having water contents between 10 and 100mg/kg. For higher contents use ISO 760 as sampling is not valid when there is a risk that condensation of water may occur.

Light olefins for industrial use; Determination of traces of water; Karl Fischer method

ISO 6192:1981 工业用轻烯烃 氨的测定 光度法

Light olefins for industrial use; Determination of ammonia; Photometric method

ISO 1391-5:1981 工业用仲甲醛 试验方法 第5部分:醛含量的测定 滴定法

The method is applicable to solid paraformaldehyde of aldehyde contents in the range 67 % (m/m) to 97 % (m/m). The principle consists in the reaction of aldehyde present in a test portion with neutralized sodium sulphite solution. Titration of the liberated sodium hydroxide with sulphuric acid solution using thymolphthalein as indicator. - This document has also been approved by the IUPAC.

Paraformaldehyde for industrial use; methods of test; determination of aldehyde content; titrimetric method

KS M 2259-1980 沥青材料滚动薄膜加热试验方法(热和空气对移动沥青薄膜的影响)

이 방법은 이동 반고체 아스팔트성 재료에 미치는 열과 공기의 영향을 측정하기 위한 것이다.

Testing method for rolling thin - film oven of asphalt(Effect of heat and air on moving film of asphalt)

ISO 5917:1980 氯氟化烃 沸程的测定 产品特性试验

Chlorofluorinated hydrocarbons; Determination of boiling range; Test for product characterization

ISO 5279:1980 甲苯.烃类杂质的测定.气相色谱法

Toluene; Determination of hydrocarbon impurities; Gas chromatographic method

ISO 5278:1980 苯.结晶点的测定

Benzene; Determination of crystallizing point

ISO 4626:1980 挥发性有机液体 用作原料的有机溶剂沸程的测定

This method is applicable to organic liquids that boil between 30 and 300 C at normal pressure, and that are chemically stable and do not corrode the apparatus during the distillation such as hydrocarbons, esters, alcohols, ketones, ethers and similar products. The principle consists in distillation of a 100 ml test portion under prescribed conditions, systematic observation of thermometer readings and volumes of condensate and calculation of the results from these data with correction to standard atmospheric pressure.

Volatile organic liquids; Determination of boiling range of organic solvents used as raw materials

ISO 5281:1980 芳香烃 苯、二甲苯和甲苯 在20℃时密度的测定

Specifies pyknometer and hydrometer methods. The principle of the pyknometer method bases on weighing an empty pyknometer, then filled with water and, finally, filled with the product under test at known temperatures. Calculation of the density from the values obtained applying certain corrections given in tables. The hydrometer method bases on the immersion of a hydrometer in the product under test and recording the hydrometer scale reading and the temperature. Calculation of the density from the values obtained after applying a correction to be obtained from the calibration certificate.

Aromatic hydrocarbons; Benzene, xylene and toluene; Determination of density at 20 degrees C

ISO 5275:1979 芳香烃 硫醇的存在试验 检硫液法

Aromatic hydrocarbons; Test for presence of mercaptans (thiols); Doctor test

ISO 5787:1979 工业用氯甲烷和氯乙烷 试验方法

Methyl chloride and ethyl chloride for industrial use; Methods of test

ISO 5276:1979 芳香烃 中和试验

Mixing a test portion to which a mixed indicator (bromocresol green/alizarin red S) has been added with water by shaking. Comparison of the colour of the aqueous layer with that of a neutral solution of the indicator.

Aromatic hydrocarbons; Test for neutrality

ISO 5789:1979 工业用氟代烃 不挥发残渣的测定

Specifies a method, the principle of which is based on evaporation of a test portion under specified conditions, using special apparatus, and weighing of the residue after evaporation. Details the procedure and provides information on the expression of results and the data to be included in the test report.

Fluorinated hydrocarbons for industrial use; Determination of non-volatile residue

ISO 5274:1979 芳香烃 酸洗试验

Specifies an acid washing test. Gives some indication of the degree of refining but does not give a precise measure of the amount of unsaturated compounds present as different unsaturated compounds produce different colourations with sulphuric acid. Shaking together of equal volumes of the sample and 95 % (m/m) sulphuric acid. Comparison of the colour of the acid layer with that of standard matching solutions.

Aromatic hydrocarbons; Acid-wash test

JIS K 2423:1978 吡啶类的试验方法

Methods for testing pyridine bases

JIS K 2424:1978 萘、蒽、咔唑的试验方法

Methods for testing naphthalene, anthracene, and carbazole

JIS K 1511:1978 醋酸酯试验方法

Testing method for acetic ester