G15 有机化工原料综合 标准查询与下载

NF T45-011:1973 橡胶工业原料.石油增塑剂.折射成分的测定.密度

Raw materials for the elastomer industry. Petroleum plasticisers. Determination of the refraction constituent. Density.

NF T45-012:1973 橡胶工业原料.石油增塑剂.密度-粘度的测定

Raw materials for the elastomer industry. Petroleum plasticisers. Determination of density-viscosity.

ISO 2464:1973 工业用粗甘油 非甘油有机物(MONG)的计算

This determination is preferred to that of the non-volatile organic residue, which is more lengthy and leads to less reproducible results. The matter represents, by convention, the difference obtained by subtracting from 100 th sum of the contents of glyceral, ash and water. The determination of the glyceraol content, determination of ash and the determination of water are carried out by following the procedure as specified.

Crude glycerine for industrial use; Calculation of Matter (Organic) Non-Glycerol (MONG)

ISO 2208:1973 工业用苯酚、邻甲酚、间甲酚和对甲酚 用分子筛干燥后结晶点测定

Phenol, o-cresol, m-cresol and p-cresol for industrial use; Determination of crystallizing point after drying with a molecular sieve

ISO 2221:1972 工业用甲醛溶液 无机氯化物极限试验

The method, as specified, is applicable when the required limit is not greater than 0, 05 % and not less than 0, 0005 %. If the required limit lies outside that range, the mass of the test portion should be changed. The principle of the test consists in comparison of the turbidity obtained by the addition of silver nitrate solution to a solution of the sample, in the presence of nitric acid, with that similary produced from a chloride solution of known concentration.

Formaldehyde solutions for industrial use; Limit test for inorganic chlorides

ISO 2224:1972 工业用甲醛溶液 灰分的测定

Formaldehyde solutions for industrial use; Determination of ash

ISO 2227:1972 工业用甲醛溶液 甲醛含量的测定

The specified method is applicable to HCHO contents between 25 5 and 45 %. The field of application may be extended by siutably modifying the mass of the test portion. The principle consists in the reaction of the test solution with a neutral sodium sulphite solution, and acidimetric titration of the liberated sodium hydroxide in presence of thymolphthalein as indicator.

Formaldehyde solutions for industrial use; Determination of formaldehyde content

ISO 2222:1972 工业用甲醛溶液 无机硫酸盐极限试验

The specified method is applicable when the required limit is not greater than 0, 1 % and not less than 0, 001 %. If the required limit lies outside that range, the mass of the test portion should be changed. The principle ot the test consists in comparison of the turbidity obtained by the addition of barium chloride solution to a solution of the sample, in the presence of hydrochloric acid, with that similarly produced from a sulphate solution of known concentration.

Formaldehyde solutions for industrial use; Limit test for inorganic sulphates

ISO 2228:1972 工业用甲醛溶液 甲醇含量的测定

The results obtained by this method will include the methanol freed from combined forms. These are however not usually present at higher levels to effect the results. The principle consists in esterfication of the methanol present with formic acid using sulphuric acid as a catalyst. Distillation of the methyl formate into sodium hydroxide solution and back-titration of the excess sodium hydroxide with a standard volumetric sulphuric acid solution, using phenolphthalein as indicator. This method is intended for methanol contents greater than 0, 2 %.

Formaldehyde solutions for industrial use; Determination of methanol content

ISO 2225:1972 工业用甲醛溶液 酸度的测定

Formaldehyde solutions for industrial use; Determination of acidity

ISO 2223:1972 工业用甲醛溶液 重金属(铁除外)极限试验

The method detects only the heavy metals present in non-complex form, the sulphides of which are precipitated in acid solution. The method is not specific for any one heavy metal. The principle consists in conversion of heavy metal, such as lead and copper, in acid solution to their sulphides, and comparison of the colour produced with that given by an aliquot volume of standard lead solution treated with hydrogen sulphide in the same way.

Formaldehyde solutions for industrial use; Limit test for heavy metals (excluding iron)

ISO 2212:1972 工业用三氯乙烯 试验方法

Trichloroethylene for industrial use; Methods of test

ISO 2210:1972 工业用液体卤代烃 蒸发残渣的测定

The method specified can also be applied to other liquids behaving, in respect or evaporation, like halogenated hydrocarbons. The principle consists in evaporation of a test sample in a special apparatus in a platinum or borosilicate glass dish. Such an arrangement is shown in a figure. Weighing of the residue obtained after evaporation and drying at 110 ?C to constant mass.

Liquid halogenated hydrocarbons for industrial use; Determination of residue on evaporation

ISO 2213:1972 工业用过氯乙烯 试验方法

Perchloroethylene for industrial use; Methods of test

ISO 2312:1972 工业用四氯化碳 试验方法

The document specifies the sampling, the measurement of colour in Hazen units, determination of distillation characteristics, determination of density at 20 ?C, determination of residue on evaporation, determination of water content, determination of the cloud point and the determination of carbon disulphide content. The principle of the CS2 determination is based on reaction of the carbon disulphide, in the presence of Cu(II) ions and diethylamine, to form copper diethyldithiocarbamate. This compound is soluble in the product which is tested giving a yellow colour the intensity of which is a function of the carbon disulphide content.

Carbon tetrachloride for industrial use; Methods of test

ISO 2099:1972 工业用纯甘油 20℃时密度的测定

The product shall be free from substances in suspension and crystallized salts. A choice of two pyknometers is provided: the Gay-Lussac pyknometer and the Reischauer pyknometer. The principle by using the Gay-Lussac pyknometer consists in determination of the capacity by measuring the mass of water at 20 ?C and measuring the volume of sample at 20 ?C. Principle of the Reischauer pyknometer: calibration by measuring the masses of water introduced up to the different graduation lines. Measurement of the mass of the volume of sample at 20 ?C up to a certain graduation line. Both of the types: calculation of the quotient which results from dividing the mass of the sample by the volume of the pyknometer corresponding to this mass.

Purified glycerol for industrial use; Determination of density at 20 degrees C

ISO 2097:1972 工业用甘油 水含量的测定 卡尔·费休法

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

ISO 2098:1972 工业用甘油 灰分的测定 重量法

Glycerols for industrial use; Determination of ash; Gravimetric method

ISO 1904:1972 工业用液态苯酚 酚含量的测定 溴化法

The method is not specific for phenol. It determines tho total amount of material that can be brominated under the conditions of the test. It is applicable to mixtures of about 80 % (V/V) phenol and 20 % (V/V) water. The principle is based on reaction between phenol and bromine from a measured amound of standard bromide/bromate solution. Formation of tribromophenol, follwed by iodometric determination for excess bromine using a standard volumetric solution of sodium thiosulphate.

Liquefied phenol for industrial use; Determination of phenols content; Bromination method

ISO 185:1961/Amd 1:1969 灰口铸铁.分类.修正件1

Amendment 1-1969