G15 有机化工原料综合 标准查询与下载

NF T45-014:1976 橡胶工业原料.石油增塑剂.试验方法

Raw materials for the rubber industry. Petroleum plastifiers. Test methods.

ISO 3363:1976 工业用氟氯化烃 酸度的测定 滴定法

Applicable to products the acidity of which is between 2 mol and 200 mol of univalent acid per kg. Two procedures are given: one is applicable to liquid products (R11, R113, etc.) and the other one to gaseous (R12, R22, etc.). The principle consists in extraction of the acids by water. Titration of the acids in the aqueous phase with standard volumetric sodium hydroxide solution in the presence of bromocresol green as indicator. A figure shows an apparatus for absorption of acids for products which are gaseous at ordinary temperatures.

Fluorochlorinated hydrocarbons for industrial use; Determination of acidity; Titrimetric method

ISO 3362:1976 工业用氯化苯 试验方法

Characterizes the product and gives the main impurities. Specifies methods for the determination of the crystallizing point and density and the procedure of the gas chromatographic analysis. Details the principle of determination of the product and its impurities, especially benzal chloride, benzaldehyde, toluene, chlorotoluene, etc., by the gaschromatography (relates to ISO 2818).

Benzyl chloride for industrial use; Methods of test

ISO 1614:1976 工业用甘油 试样和试验方法 总则

The procedures specified are applicable to the analysis of crude or distilled glycerols having a glycerol content greater than 75 % (m/m). The methods relate to determination of alkalinity or acidity, determination of sulphated ash, determination of water, determination of density at 20 ?C, determination of ash, arsenic, and glycerol. - Replaces ISO Recommendation R 1614-1970.

Glycerines for industrial use; Samples and test methods; General

ISO 1616:1976 工业用甘油 硫酸盐灰分的测定 重量法

The method is applicable to products yielding a quantity of sulphated ash equal to or less than 0.5 % (m/m). The principle is based on combustion of a test portion and calcination of the residue in the presence of sulphuric acid in a platinum or porcelain dish between 800 ?C and 850 ?C. Weighing of the residue thus obtained. - Replaces ISO Recommendation R 1616-1970.

Glycerines for industrial use; Determination of sulphated ash; Gravimetric method

ISO 1615:1976 工业用甘油 酸碱度的测定 滴定法

The principle of the method consists in the titration of a test portion with a standard volumetric solution of hydrochloric acid or sodium hydroxide in the presence of phenolphthalein as indicator. - Replaces ISO Recommendation R 1615-1970.

Glycerines for industrial use; Determination of alkalinity or acidity; Titrimetric method

ISO 2879:1975 工业用甘油 甘油含量的测定 滴定法

Applicable to the analysis of glycerines free from organic compounds other than glycerol having more than two hydroxyl goups on adjacent carbon atoms, such as sugars which can also give rise to formic acid and, for this reason, will interfere in the determination. The procedure begins with a cold oxidation of the glycerol by sodium periodate in a strongly acid medium, followed by titration of the formic acid produced by the reaction with standard volumetric sodium hydroxide solution, using a pH meter.

Glycerine for industrial use; Determination of glycerol content; Titrimetric method

ISO 2465:1974 工业用甘油 砷含量的测定 二乙基二硫代氨基甲酸银光度法

The method is applicable tp products with a content greater than 0, 1 mg/kg. It is applied to a test portion as it is, and to another identical portion with a known quantity of arsenic added. The principle consists in reduction of the arsenic by zinc in a hydrochloric acid medium, with the formation of arsine; absorption of the arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish-red colour produced by the colloidally dispersed silver at the maximum of the absorption curve at a wavelength of about 540 nm.

Glycerols for industrial use; Determination of arsenic content; Silver diethyldithiocarbamate photometric method

ISO 2750:1974 工业用尿素 以哈森为单位(铂-钴色标)测定尿素-甲醛液的色度

Lays down the principle of the visual comparison of the colour of a solution of the sample in formaldehyde, stabilized at a pH of 10 0.1, with that of colour standards. Expression of the results in terms of Hazen units. For routine control purposes, referring to ISO 2211. The method has also been approved by the IUPAC.

Urea for industrial use; Measurement of colour in Hazen units (platinum-cobalt scale) of a urea-formaldehyde solution

ISO 2501:1974 工业用甲乙酮、异丁基甲酮和异戊基乙酮 醇类杂质的测定 容量法

Acetylation of a test portion with acetyl chloride and determination of the alcohol equivalent to the acetyl groups that have reacted by titration with standard volumetric sodium hydroxide solution in the presence of phenolphthalein. Correction of the acidity of the sample.

Methyl ethyl ketone, isobutyl methyl ketone and isoamyl ethyl ketone for industrial use; Determination of alcoholic impurities; Volumetric method

ISO 2499:1974 工业用异丁基甲基酮.试验方法一览

isoButyl methyl ketone for industrial use; List of methods of test

ISO 2522:1974 工业用磷酸三甲酚酯 表观游离酚含量的测定 容量法

The method specified determines only those phenols capable of reacting at the 2nd, 4th and 6th position (-OH = 1). The procedure consists in extraction of free phenols from a test portion with sodium hydroxide solution. Bromination of these phenols with potassium bromide-bromate solution in an acid medium and determination of the excess bromine after reaction with potassium iodide by titration with standard volumetric sodium thiosulphate solution.

Tritolyl phosphate for industrial use; Determination of apparent free phenols content; Volumetric method

ISO 2498:1974 工业用甲乙酮 残余气味检验

The principle of examination is the comparison of the odour of the sample with that of an agreed reference standard. If there is no odour after the butanone has been evaporated the product is without any residual odour.

Methyl ethyl ketone for industrial use; Examination for residual odour

ISO 2500:1974 工业用异戊基乙基酮.试验方法一览

isoAmyl ethyl ketone for industrial use; List of methods of test

ISO 2511:1974 工业用糠醛.试验方法一览

Furfural for industrial use; List of methods of test

ISO 2512:1974 工业用糠醛 羟基化合物总含量的测定 容量法

Reaction between hydroxylammonium chloride and carbonyl groups in a test portion, followed by determination of the hydrochloric acid liberated by titration with standard volumetric sodium hydroxide solution in the presence of bromophenol blue as indicator.

Furfural for industrial use; Determination of total carbonyl compounds; Volumetric method

ISO 2513:1974 工业用乙醛 15℃时密度的测定

Acetaldehyde for industrial use; Determination of density at 15 degrees C

ISO 2514:1974 工业用乙醛 水含量的测定 卡尔·费休法

Acetaldehyde for industrial use; Determination of water content; Karl Fischer method

ISO 2517:1974 工业用双丙酮醇.试验方法一览

Diacetone alcohol for industrial use; List of methods of test

ISO 2518:1974 工业用双丙酮醇和己二醇 水混溶性试验

Specifies the test by addition of water to the test sample while shaking and the examination of appearance of any opalescence or cloudiness produced.

Diacetone alcohol and hexylene glycol for industrial use; Test for miscibility with water