71.080.80 醛和酮 标准查询与下载
共找到 220 条与 醛和酮 相关的标准，共 15 页
isoAmyl ethyl ketone for industrial use; List of methods of test
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1974-04
- 实施
Acetaldehyde for industrial use; Determination of water content; Karl Fischer method
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1974-04
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1974-04
- 实施
Acetaldehyde for industrial use; Determination of density at 15 degrees C
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1974-04
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1974-04
- 实施
Acetaldehyde for industrial use — Determination of total content of carbonyl compounds — Volumetric method
- ICS
- 71.080.80
- CCS
- 发布
- 1973-12-01
- 实施
Acetaldehyde for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
- ICS
- 71.080.80
- CCS
- 发布
- 1973-12-01
- 实施
Specifies the sampling, the determination of distillation characteristics, of the density at 20 0C, of residue on evaporation on a water bath, of the water content, of alcoholic impurities, of the acidity to phenolphthalein, the examination of residual odour and the measurement of colour in Hazen units.
Methyl ethyl ketone for industrial use; List of methods of test
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1973-12
- 实施
Pretreatment of the water used, freshly boiled and cooled, by neutralization by addition of the standard volumetric sodium hydroxide solution or sulphuric acid solution as required. Addition of the test portion and titration with the standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator until the apperance of a pale pink colour.
Furfural for industrial use; Determination of acidity to phenolphthalein; Volumetric method
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1973-12
- 实施
Formaldehyde solutions for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
- ICS
- 71.080.80
- CCS
- 发布
- 1972-12-01
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-12
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-12
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-12
- 实施
Formaldehyde solutions for industrial use; Determination of ash
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-12
- 实施
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
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-12
- 实施
Formaldehyde solutions for industrial use; Determination of acidity
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-11
- 实施
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)
- ICS
- 71.080.80
- CCS
- G15
- 发布
- 1972-11
- 实施
