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4.
4.
a.
b.
c.
d.
e.
f.
g.
4.
4.
4.
4.
In the formula: X i -corresponding; the content of the component, when X i is X c12 alcohol represents purity, %;
A i —corresponding to the chromatographic peak area of component i;
f i —The chromatographic peak quantitative correction factor corresponding to component i
Take the arithmetic average of two parallel determinations as the result
4.
In the formula: f w -quality correction factor;
A i , W i , A s , W s -are the peak area and mass of the analyte and the known chromatographically pure standard, respectively
.
4.
6.
5 Allowance
The difference between the two parallel determinations shall not be more than 0.
5%
.
4.
6.
6 Limit of detection
The minimum detection concentration is 0.
05%
.
4.
7 Determination of alkane content
The sum of the content of each carbon paraffin component in the sample is the alkane content
.
According to the purity determination method 4.
6.
1 ~ 4.
6.
4.
2
.
4.
7.
1 Tolerance
The difference between the two parallel determinations shall not be more than 0.
3%
.
5 Inspection rules
5.
1 Dodecanol should be inspected by the quality inspection department of the manufacturer, and the manufacturer should ensure that each batch of dodecanol meets the requirements of this standard
.
5.
2 The user has the right to check and accept dodecanol in accordance with the provisions of this standard
.
5.
3 Each batch of products should be accompanied by a quality certificate, which includes: manufacturer name, product name, grade, production date, batch number, net weight, certification of product quality in accordance with this standard and this standard number
.
5.
4 Sampling shall be carried out in accordance with the provisions of GB6678, and the total amount of samples shall not be less than 500g
.
5.
5 Melt and mix the taken samples; put the same amount into two clean and dry bottles with ground stoppers, paste a label on the bottles, indicate the name of the manufacturer, product name, grade, batch number and sampling date, and one bottle for inspection , The other bottle is kept for two months for future reference
.
5.
6 If one indicator of the inspection result does not meet the requirements of this standard, dodecanol should be re-inspected from twice the volume of the packaging container.
Even if only one indicator does not meet the requirements of this standard, the entire batch of products is Unqualified
.
5.
7 When there is an objection between the supplier and the buyer on the product quality, it can be resolved through negotiation between the two parties, or arbitration can be conducted in accordance with the "Interim Measures for National Product Quality Arbitration Inspection"
.
6 Marking, packaging, transportation and storage
6.
1 Logo: There should be an obvious and firm logo on the packaging container of dodecanol.
Its content includes: manufacturer name, product name, trademark, production date, grade, batch number, net weight, and this standard number
.
6.
2 Packaging: Dodecanol should be packed in firm, dry and clean galvanized drums or aluminum drums, each with a net weight of 160kg
.
6.
3 Transportation: The lid of the drum must be tightly sealed during transportation to avoid damage and leakage
.
6.
4 Storage: Dodecanol should be stored in a dry and ventilated warehouse
.
The storage period is 1 year from the date of leaving the factory
.
Related links: Dodecanol (3)