G15 有机化工原料综合 标准查询与下载

ISO 6792:1982 工业用丁二烯 在液态丁二烯液面上的气相中氧和氩的测定 气相色谱法

Butadiene for industrial use; Determination of oxygen and argon in the gaseous phase above liquid butadiene; Gas chromatographic method

ISO 1843-8:1982 工业用高级醇 试验方法 第8部分:硫酸色度试验

Relates to C6 to C13 alcohols. The principle consists in treatment of a test portion with sulphuric acid solution, under specified conditions, and comparison of the colour developed with that of the same volume of an agreed colour standard. The colour developed may be measured in Hazen units. ISO 1843/8 cancels and replaces ISO Recommendation R 1852-1970, of which it constitutes a technical revision.

Higher alcohols for industrial use; Methods of test; Part 8 : Sulphuric acid colour test

ISO 757-1:1982 工业用丙酮 试验方法 第1部分:总则

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

ISO 757-2:1982 工业用丙酮 试验方法 第2部分:用酚酞指示剂测定酸度 滴定法

Acetone for industrial use; Methods of test; Part 2 : Determination of acidity to phenolphthalein; Titrimetric method

ISO 757-3:1982 工业用丙酮 试验方法 第3部分:水互溶性试验

Acetone for industrial use; Methods of test; Part 3 : Test for miscibility with water

ISO 5282:1982 芳香烃 硫含量的测定 皮特-鲁普雷克特还原和分光光度法

Relates to products boiling below 200 鳦. Directly applicable to contents of 0.1 mg/kg to 30 mg/kg. Higher contents may be determined by a suitable dilution of the sample. Alkylsulphones, arylsulphonic acids and arylsulphonates give incomplete recovery of sulphur. Reduction of the sulphur compounds to nickel sulphide with Raney nickel. Stripping of the hydrogen sulphide in hydrochloric acid medium and absorption in an alkaline zinc acetate solution. Formation of methylene blue with N,N-dimethyl-p-phenylenediamine sulphate and iron(III) ammonium sulphate. Determination of the absorbance of the blue coloured solution at a wavelength of 667 nm.

Aromatic hydrocarbons; Determination of sulphur content; Pitt-Ruprecht reduction and spectrophotometric method

ISO 1388-12:1981 工业用乙醇 试验方法 第12部分:高锰酸盐时间的测定

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.

Ethanol for industrial use; Methods of test; Part 12 : Determination of permanganate time

ISO 756-2:1981 工业用异丙醇 试验方法 第2部分:酸度的测定 滴定法

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).

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

ISO 1388-3:1981 工业用乙醇 试验方法 第3部分:少量的羰基化合物含量的测定 光度法

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.

Ethanol for industrial use; Methods of test; Part 3 : Estimation of content of carbonyl compounds present in small amounts; Photometric method

ISO 1388-5:1981 工业用乙醇 试验方法 第5部分:醛类含量的测定 目测比色法

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.

Ethanol for industrial use; Methods of test; Part 5 : Determination of aldehydes content; Visual colorimetric method

ISO 756-1:1981 工业用异丙醇 试验方法 第1部分:总则

Gives general intructions and specifies the methods for the determination of density at 20 鳦, 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.

Propan-2-ol for industrial use; Methods of test; Part 1 : General

ISO 1388-9:1981 工业用乙醇 试验方法 第9部分:酯类含量的测定 皂化后滴定法

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.

Ethanol for industrial use; Methods of test; Part 9 : Determination of esters content; Titrimetric method after saponification

ISO 1388-4:1981 工业用乙醇 试验方法 第4部分:中等量的羰基化合物含量的测定 滴定法

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.

Ethanol for industrial use; Methods of test; Part 4 : Estimation of content of carbonyl compounds present in moderate amounts; Titrimetric method

ISO 1388-11:1981 工业用乙醇 试验方法 第11部分:糠醛检定试验

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.

Ethanol for industrial use; Methods of test; Part 11 : Test for detection of furfural

ISO 1388-7:1981 工业用乙醇 试验方法 第7部分:甲醇含量(0.01～0.20%(V/V)甲醇含量)的测定 光度法

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.

Ethanol for industrial use; Methods of test; Part 7: Determination of methanol content (methanol contents between 0,01 and 0,20 % (V/V)); Photometric method

ISO 1388-10:1981 工业用乙醇 试验方法 第10部分:烃类含量的测定 蒸馏法

The principle is based on distillation of a test portion in the presence of water, addition to the distillate of a saturated sodium chloride solution and measurement of the volume of insoluble hydrocarbons. A Hempel fractionating column with Liebig condenser is used for the distillation. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

Ethanol for industrial use; Methods of test; Part 10 : Estimation of hydrocarbons content; Distillation method

ISO 6793:1981 工业用1,4-羟基丁烯 碘值的测定

But-2-ene 1,4-diol for industrial use; Determination of iodine value

ISO 5277:1981 芳香烃 沸点在150℃的产品蒸发残渣的测定

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.

Aromatic hydrocarbons; Determination of residue on evaporation of products having boiling points up to 150 degrees C

ISO 756-3:1981 工业用异丙醇 试验方法 第3部分:水互溶性试验

The procedure consists in addition of water to a test portion, under specified conditions, and followed by examination vertically for any opalescence or turbidity against a black background with side illumination. International Standards ISO 756/1, ISO 756/2 ans ISO 756/3 cancel and replace ISO Recommendation R 756-1968 of which they constitute a technical revision.

Propan-2-ol for industrial use; Methods of test; Part 3 : Test for miscibility with water

ISO 1388-1:1981 工业用乙醇 试验方法 第1部分:总则

The document also specifies the methods to be used for the determination of density at 20 鳦, for the determination of dry residue after evaporation on a water bath, for the determination of water content, and for the measurement of colour. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

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