0520;5605 标准查询与下载



共找到 11 条与 相关的标准,共 1

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

ICS
0520;5605
CCS
G15
发布
1981-11
实施

This International Standard sprcifies a gas chromatographic method for the determination of traces carbon monoxide and carbon dioxide in ethyiene and propylene for industrial use. The method is applicable to products having carbon monoxide concentrations greater than 0.1ml/m3 and carbon dioxide concentrations greater than 0.5ml/m3.

Ethylene and propylene for industrial use; Determination of traces of carbon monoxide and carbon dioxide; Gas chromatographic method

ICS
0520;5605
CCS
G10
发布
1981-10
实施

Light olefins for industrial use; Determination of impurities by gas chromatography; General considerations

ICS
0520;5605
CCS
G15
发布
1981-10
实施

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

ICS
0520;5605
CCS
G15
发布
1981-05
实施

Toluene; Determination of hydrocarbon impurities; Gas chromatographic method

ICS
0520;5605
CCS
G15
发布
1980-10
实施

Essential oils; Determination of ester value after acetylation and evaluation of free alcohols and total alcohols content

ICS
0520;5605
CCS
Y40
发布
1980-09
实施

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

ICS
0520;5605
CCS
G15
发布
1979-10
实施

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

ICS
0520;5605
CCS
G15
发布
1979-07
实施

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

ICS
0520;5605
CCS
G15
发布
1979-07
实施

Essential oils; Determination of phenols content

ICS
0520;5605
CCS
Y40
发布
1973-12
实施

Essential oils; Determination of the acid value

ICS
0520;5605
CCS
Y40
发布
1973-12
实施



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