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4.
4.
Under certain conditions, the sample is treated with sulfuric acid , and the color produced is compared with the same volume chromaticity standard
4.
4.
4.
General laboratory equipment and
4.
4.
4.
4.
4.
Clean the used instrument with sulfuric acid solution, then clean it with tap water and distilled water and dry it
Measure 100 mL of the sample in a ground conical flask and place it in an ice-water bath to cool for 5 minutes: continue to be immersed in the ice-water bath, and immediately add 8 mL of sulfuric acid with a burette at a rate of 2 drops per second .
4.
The color of the sample is expressed by the chromaticity of the platinum-cobalt standard solution closest to the sample
Take the arithmetic average of the two parallel determinations as the result
4.
6.
6 Allowable difference
The difference between the two parallel determination results is not greater than No.
3
.
4.
7 Determination of moisture
4.
7.
1 Measure according to the provisions of GB6283
.
The volume of the sample drawn is 10 mL
.
Take the arithmetic average of the two parallel determinations as the result
.
4.
7.
2 Tolerance
The difference between the two parallel determination results is not more than 0.
01%
.
5 Inspection rules
5.
1 Industrial octanol should be inspected by the quality inspection department of the manufacturer, and the manufacturer should ensure that each batch of industrial octanol meets the requirements of this standard
.
5.
2 The user has the right to inspect the products received in accordance with the provisions of this standard
.
5.
3 Each batch of industrial octanol should be accompanied by a fixed-format quality certificate, which includes the name of the manufacturer, product name, grade, batch number, product net weight and production date and the standard number
.
5.
4 The sampling of industrial octanol shall be carried out in accordance with the provisions of 6.
6.
1 in GB6678
.
The sampling method is carried out in accordance with the provisions of 2.
1.
3 and 2.
3 of GB5680
.
5.
5 The total amount of sampling is not less than 2L, fully mix and evenly distribute into two clean, dry 1L cork-filled bottles, label them, and indicate: product name, batch number, sampling date, sampler’s name, one bottle For quality inspection, another bottle is sealed and stored for one month for future reference
.
5.
6 If one of the indicators in the inspection does not meet the requirements of this standard, the sampling should be doubled for re-inspection.
Even if one indicator does not meet the requirements of this standard, the entire batch of products will be non-conforming
.
5.
7 When the supply and demand parties disagree with the product quality, the arbitration shall be conducted in accordance with the provisions of the Interim Measures for the National Product Quality Arbitration and Inspection
.
6 Marking, packaging, transportation and storage
6.
1 Logo
There should be an obvious and firm mark on the packaging container, and its content includes: manufacturer name, product name, trademark, production date, this standard number, batch number, and net weight
.
6.
2 Packaging
Industrial octanol should be packed in a dry, clean tanker or 200L galvanized iron drum, with a net weight of 150kg per drum
.
6.
3 Transportation
When transporting, it should be handled with care to avoid collision and prevent sunlight
.
6.
4 Storage
It should be stored in a cool, ventilated, and dry warehouse, and there should be no open flames nearby
.
Related Links: Industrial Octanol (2-Ethylhexanol) (4)