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    Home > Chemicals Industry > Chemical Technology > Industrial recovery of methyl chloride (4)

    Industrial recovery of methyl chloride (4)

    • Last Update: 2021-10-24
    • Source: Internet
    • Author: User
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    4.


    4.


    4.


    According to the provisions of GB/T7376-2008 in 5.


    4.


    Carry out according to the provisions of 4.


    The weighing amount is 500g, accurate to 1g


    Take the arithmetic average of the two parallel determination results as the report result


    5 Inspection rules

    5.


    5.


    Type inspection items are sensory and all items in Table 1.


    a) The main raw materials have changed;

    b) When there are major changes in the process, which may affect the performance of the product;

    c) When production resumes after a long-term suspension of production;

    d) The results of the factory inspection and: when there is a big difference between the secondary type inspection;

    e) Contract stipulations


    5.


    The factory inspection item date is the appearance, the content of methyl chloride and the moisture in Table 1, which should be inspected batch by batch


    5.


    Industrial recovered monochloromethane should be inspected by the quality supervision and inspection department of the production plant


    a) The name of the manufacturer;

    b) Product name;

    c) Production date or batch number;

    d) Product grade;

    e) The number of this standard
    .

    5.
    3 Batch

    Taking products of the same quality as a batch, the product storage tank can be allocated for batching, or batching can be carried out according to the production cycle
    .

    5.
    4 Sampling

    The production plant can take representative samples from the storage tank or on the production line
    .
    The number of sampling units is determined according to the regulations of GB/T6678, and the sampling method is carried out according to the regulations of Gout/T6680
    .
    The sampling volume should be sufficient for analysis and inspection
    .
    A label should be affixed to the sampling container, indicating the product name, batch number, sampling date, sampling location, and the name of the sampler
    .

    5.
    5 Judgment rules and reinspection

    The test result is judged according to the rounding value comparison method specified in GB/T8170
    .
    The final expression of the analysis result should be consistent with the number of digits required by the technology
    .

    If one of the inspection results does not meet the requirements of this standard, the steel bottled product shall be re-sampled from twice the volume of the packaging unit for inspection; the canned product shall be re-sampled for inspection
    .
    Even if there is only one indicator that does not meet the requirements of this standard as the result of the re-inspection, the batch of products shall be treated as unqualified
    .

     

     

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