GB/T 9552-2017Chlorothalonil wettable powders (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 9552-1999 "chlorothalonil WP", compared with GB/T 9552-1999, the main technical changes as follows.

--- Change the indicator "HCBB in 50%, 60% and 75% of the three specifications from not more than 0.2g/kg, 0.3g/kg and 0.3g/kg" to "Not higher than 0.02g/kg, 0.03g/kg, 0.03g/kg";

--- Added deca-biphenyl control index;

--- Remove the persistent foaming control indicators;

--- The "heat storage chlorothalonil mass fraction, pH value, wetting time, fineness still meet the standard requirements, the suspension rate of not less than 50%" to "After storage chlorothalonil mass fraction of not less than 97% before storage, the suspension rate is still in line with standard requirements";

--- The "guarantee period of 2 years, the suspension rate of not less than 60%" to "the product is valid for 2 years."

This standard proposed by the China Petroleum and Chemical Industry Federation.

1 Scope

This standard specifies the chlorothalonil WP requirements, test methods and signs, labels, packaging, storage and delivery and guarantee period.

This standard applies to chlorothalonil by the original drug, additives and fillers suitable for processing chlorothalonil WP made.

NOTE Other names, structural formulas and basic physico-chemical parameters of chlorothalonil, hexachlorobenzene and deca-biphenyl are given in Appendix A.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1601 Determination of pesticide pH value

GB/T 1604 commodity pesticide acceptance rules

Commercial pesticides sampling method

GB 3796 Pesticide packaging General

Pesticide wettable powder GB/T 5451 Determination of wettability

Laboratory use specifications and test methods for analysis GB/T 6682-2008

Representation and determination of rules for repair of numerical values and limit values GB/T 8170-2008

GB/T 14825 pesticide suspension rate determination method

GB/T 16150 Pesticide powder, wettable powder fineness determination

Determination of heat storage stability of GB/T 19136 pesticides

3 Requirements