G15 有机化工原料综合 标准查询与下载

ISO 731-5:1977 工业用甲酸 试验方法 第5部分:无机硫酸盐目测限度试验

The principle consists in a comparison of the turbidity, obtained by the addition of barium chloride to a solution prepared from a test portion in the presence of hydrochloric acid, with that similarly obtained from a standard sulphate solution. The method is a applicable to products having inorganic sulphates contents, expressed as sulphate (SO42-), in the range 0, 001 to 0, 1 % (m/m).

Formic acid for industrial use; Methods of test; Part V : Visual limit test for inorganic sulphates

ISO 1394:1977 工业用液体卤代烃 浊点的测定

Specifies a simple method for detecting the presence of certain impurities (generally water) which, dissolved at ambient temperature, cause the formation of cloudiness when the product is cooled to a sufficiently low temperature. The principle consists in determination of the temperature at which cloudiness appears in the clear sample, when it is gradually cooled under specified conditions. - Replaces ISO Recommendation R 1394-1970.

Liquid halogenated hydrocarbons for industrial use; Determination of cloud point

ISO 1393:1977 工业用液体卤代烃 酸度的测定 滴定法

The method does not apply when the halogenated materials hydrolyse at ambient temperature. The principle is based on the titration of the acidity of the aqueous extract from a test portion with a standard volumetric sodium hydroxide solution in the presence of bromocresol green as indicator. - Replaces ISO Recommendation R 1393-1970.

Liquid halogenated hydrocarbons for industrial use; Determination of acidity; Titrimetric method

ISO 1389-1:1977 工业用邻苯二甲酸酐 试验方法 第1部分:总则

This document also specifies a method to be used for the determination of the crystallizing point. Before carrying out the analysis and tests, the sample shall be grind to a fine powder and mixed thoroughly. Exposure to moist air may lead to the formation of phthalic acid. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part I : General

ISO 1389-2:1977 工业用邻苯二甲酸酐 试验方法 第2部分:熔融物色度的测定

The principle is based on the measurement of colour, by the method specified in ISO 2211, of a test portion in the molten state. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part II : Measurement of colour of the molten material

ISO 731-4:1977 工业用甲酸 试验方法 第4部分:无机氯化物目测限度试验

Applicable to products having inorganic chlorides contents in the range 0, 0005 to 0, 5 % (m/m). Comparison of the turbidity, obtained by the addition of silver nitrate to a solution prepared from a test portion, with that similarly obtained from a standard chloride solution.

Formic acid for industrial use; Methods of test; Part IV : Visual limit test for inorganic chlorides

ISO 1389-3:1977 工业用邻苯二甲酸酐 试验方法 第3部分:色度稳定性的测定

The principle is based on the measurement of the colour of a test portion, by the method specified in ISO 2211, after a specified heat treatment. The test sample is maintained in a colorimetric tube in an electrically heated aluminium block, controlled at (250 3) ?C for 90 min, in the molten state. The results are expressed in Hazen units. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part III : Measurement of colour stability

ISO 731-1:1977 工业用甲酸 试验方法 第1部分:总则

Gives general instructions relating to methods of test, especially for sampling. ISO/R 731 has been subdivised into seven parts. ISO 731/1 replaces clauses 1, 2 and 7 of ISO Recommendation R 731-1968.

Formic acid for industrial use; Methods of test; Part I : General

ISO 1385-5:1977 工业用邻苯二甲酸酯类 试验方法 第5部分:酯含量的测定 皂化后滴定法

The principle consists in the saponification of ester in a test portion, using a measured excess of potassium hydroxide ethanolic solution, followed by back-titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - ISO 1385, Part 1 to Part 5 replace ISO Recommendation R 1385-1970

Phthalate esters for industrial use; Methods of test; Part V : Determination of ester content; Titrimetric method after saponification

ISO 1385-4:1977 工业用邻苯二甲酸酯类 试验方法 第4部分:以酚酞为指示剂酸度测定 滴定法

The principle consists in titration of the acidity in a test portion, in ethanolic medium, with standard volumetric sodium hydroxide solution using phenolphthalein as indicator. - ISO 1385, Part 1 to Part 5 replace ISO Recommendation R 1385-1970.

Phthalate esters for industrial use; Methods of test; Part IV : Determination of acidity to phenolphthalein; Titrimetric method

ISO 1385-3:1977 工业用邻苯二甲酸酯类 试验方法 第3部分:灰分的测定

With diallyl phthalate, this method of test should be carried out cautiously and only small amounts should be ignited at one time because of the risk of explosive polymerization. The principle consists in burning of a test portion and heating in an electric furnace at (600 30) ?C to constant mass. - ISO 1385, Part 1 to Part 5 replace ISO Recommendation R 1385-1970.

Phthalate esters for industrial use; Methods of test; Part III : Determination of ash

ISO 1389-10:1977 工业用邻苯二甲酸酐 试验方法 第10部分:1,4-萘醌含量的测定 比色法

The principle consists in the development of a pink colour by heating a test portion containing 1, 4-naphtoquinone with tin(II) chloride, and comparison of the colour produced with a series of prepared reference colours. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part X : Determination of 1,4- naphthaquinone content; Colorimetric method

ISO 1389-9:1977 工业用邻苯二甲酸酐 试验方法 第9部分:低温下可被高锰酸钾氧化杂质含量的测定 碘量法

This method is not specific for maleic anhydride. The polarographic method specified in part 7 should be used. The principle is based on the oxidation of unsaturated organic acids and anhydrides in a test portion with an excess of cold standard volumetric potassium permanganate solution in the presence of sulphuric acid, followed by iodometric determination of the potassium permanganate remaining. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part IX : Determination of impurities oxidizable in the cold by potassium permanganate; Iodometric method

ISO 1389-8:1977 工业用邻苯二甲酸酐 试验方法 第8部分:灰分测定

The principle consists in burning a test portion and heating in a furnace controlled at (600 30) ?C, until all carbonaceous matter has disappeared, to constant mass. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part VIII : Determination of ash

ISO 1389-7:1977 工业用邻苯二甲酸酐 试验方法 第7部分:顺丁烯二酸酐含量的测定 极谱法

The principle consists in the dissolution of a test portion in acetone, removal of 1, 4-naphthoquinone present in the solution by extraction with benzene. Polarographic measurement of the aqueous solution and determination of the mass of maleic anhydride by means of the calibration graph. - ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Phthalic anhydride for industrial use; Methods of test; Part VII : Determination of maleic anhydride content; Polarographic method

ISO 731-7:1977 工业用甲酸 试验方法 第7部分:其他挥发性酸低含量的测定 蒸馏后滴定法

The principle consists in a decomposition of most of the formic acid in a test portion by sulphuric acid an of the remainder by chromic acid. Steam distillation of acetic acid and/or other volatile acids and titration of the distillate with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The method is applicable to products containing less than 0, 5 % (m/m) of other volatile acids, expressed as acetic acid. The ISO Recommendation R 1913-1971 was review and has been changed to ISO 731/7. ISO 731/7 replaces ISO/R 1913-1971, to which it is technically identical.

Formic acid for industrial use; methods of test; Part VII : Determination of low contents of other volatile acids; Titrimetric method after distillation

ISO 1391-2:1976 工业用仲甲醛 试验方法 第2部分:灰分的测定

The principle of the method is based on burning a test portion and heating at (600 30) °C to constant mass. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.

Paraformaldehyde for industrial use; Methods of test; Part 2 : Determination of ash

ISO 1391-1:1976 工业用仲甲醛 试验方法 第1部分:总则

Specifies the laboratory sample to have a mass of not less than 500 g. Before carrying out the tests, the sample shall be grind to a fine powder and mixed thoroughly. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.

Paraformaldehyde for industrial use; Methods of test; Part 1 : General

ISO 1391-4:1976 工业用仲甲醛 试验方法 第4部分:水不溶物含量的测定

The principle of the procedure consists in the dissolution of a test sample in a highly diluted sodium hydroxide solution, filtration by using a tared filter crucible, drying of the residue at (100 2) ?C. Determination of the in water insoluble substances by differences. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.

Paraformaldehyde for industrial use; Methods of test; Part 4 : Determination of water-insoluble matter

JIS K 0517:1976 高纯度烃折射指数的测试方法

この規格は，温度20～30℃における屈折率が1.33～1.50の範囲におる液状の高純度炭化水素の屈折率を小数点以下5位まで測定する方法について規定する。

Testing method for refractive index of high purity hydrocarbons