Pyriproxyfen TC, EC, EW

Pyriproxyfen TC, EC, EW

PYRIPROXYFEN TECHNICAL MATERIAL

FAO Specification 715 / TC (October 2017)

This specification, which is PART ONE of this publication, is based on an evaluation of data

submitted by the manufacturers whose names are listed in the evaluation reports (715/2005,

715/2015, 715/2017). It should be applicable to TC produced by these manufacturers but it is not an endorsement of those products, nor a guarantee that they comply with the

specification. The specification may not be appropriate for TC produced by other

manufacturers. The evaluation reports (715/2005, 715/2015, 715/2017), as PART TWO,

form an integral part of this publication.

1 Description

The material shall consist of pyriproxyfen together with related manufacturing

impurities and shall be a white to pale yellow solid or a colourless to yellow clear

liquid, free from visible extraneous matter and added modifying agents.

2 Active ingredient

2.1 Identity tests (715/TC/M/2, CIPAC Handbook M, p.181, 2009)

The active ingredient shall comply with an identity test and, where the identity

remains in doubt, shall comply with at least one additional test.

2.2 Pyriproxyfen content (715/TC/M/3, CIPAC Handbook M, p.181, 2009)

The pyriproxyfen content shall be declared (not less than 970 g/kg) and, when

determined, the average measured content shall not be lower than the declared

minimum content.

PYRIPROXYFEN EMULSIFIABLE CONCENTRATE

FAO Specification 715 / EC (October 2017)

This specification, which is PART ONE of this publication, is based on an evaluation of data

submitted by the manufacturers whose names are listed in the evaluation reports (715/2005,

715/2017). It should be applicable to relevant products of these manufacturers, and those of

any other formulators who use only TC from the evaluated source. The specification is not an

endorsement of those products, nor a guarantee that they comply with the specification. The

specification may not be appropriate for the products of manufacturers who use TC from

other sources. The evaluation reports (715/2005, 715/2017), as PART TWO, form an integral

part of this publication.

1 Description

The material shall consist of technical pyriproxyfen, complying with the requirements

of FAO specification 715/TC (October 2017), dissolved in suitable solvents, together

with any other necessary formulants. It shall be in the form of a stable homogeneous

liquid, free from visible suspended matter and sediment, to be applied as an

emulsion after dilution in water.

2 Active ingredient

2.1 Identity tests (715/EC/M/2, CIPAC Handbook M, p.183, 2009)

The active ingredient shall comply with an identity test and, where the identity

remains in doubt, shall comply with at least one additional test.

2.2 Pyriproxyfen content (715/EC/M/3, CIPAC Handbook M, p.183, 2009)

The pyriproxyfen content shall be declared (g/kg or g/l at 20 ± 2ºC, Note 1) and,

when determined, the average measured content shall not differ from that declared

by more than the following tolerances:

Declared content, g/kg or g/l at 20 ± 2ºC            Tolerance

above 25 up to 100                                           ± 10% of the declared content

above 100 up to 250                                         ± 6% of the declared content

Note: the upper limit is included in each range

3 Relevant impurities

3.1 Water (MT 30.5, CIPAC Handbook J, p.120, 2000)

Maximum: 3 g/kg.

4 Physical properties (Note 2)

4.1 pH range (MT 75.3, CIPAC Handbook J, p.131, 2000)

The pH range: 4 to 7.

4.2 Emulsion stability and re-emulsification (MT 36.3, CIPAC Handbook K, p.137,

2003) (Note 3)

The formulation, when diluted at 25 ± 5°C with CIPAC CIPAC Standard Waters A

and D, shall comply with the following:

Time after dilution         Limits of stability

0 h                                    Initial emulsification complete

0.5 h                                 "Cream", maximum: 0.5 ml

2.0 h                                 "Cream", maximum: 0.5 ml

                                          "Free oil", maximum: 0.5 ml

24 h                                  Re-emulsification complete

24.5 h                               "Cream", maximum: 0.5 ml

                                          "Free oil": maximum :trace

Note: in applying MT 36.3, tests at 24 h are required only where the results at 2 h are in doubt.

4.3 Persistent foam (MT 47.3, CIPAC Handbook O, p.177, 2017)

Maximum: 20 ml after 1 min.

5 Storage stability

5.1 Stability at 0°C (MT 39.3, CIPAC Handbook J, p.126, 2000)

After storage at 0 ± 2°C for 7 days, the volume of solid and/or liquid which separates

shall not be more than 0.3 ml.

5.2 Stability at elevated temperature (MT 46.3, CIPAC Handbook J, p.128, 2000)

After storage at 54 ± 2°C for 14 days, the determined average active ingredient

content must not be lower than 97% relative to the determined average content

found before storage (Note 4) and the formulation shall continue to comply with the

clauses for:

– pH range (4.1);

– emulsion stability and re-emulsification (4.2).

PYRIPROXYFEN EMULSION, OIL IN WATER

FAO Specification 715 / EW (October 2017)

This specification, which is PART ONE of this publication, is based on an evaluation of data

submitted by the manufacturer whose name is listed in the evaluation report (715/2010). It

should be applicable to relevant products of this manufacturer, and those of any other

formulators who use only TC from the evaluated source. The specification is not an

endorsement of those products, nor a guarantee that they comply with the specification. The specification may not be appropriate for the products of manufacturers who use TC from other sources. The evaluation report (715/2010), as PART TWO, forms an integral part of this publication.

1 Description

The formulation shall consist of an emulsion of technical pyriproxyfen, complying with

the requirements of FAO specification 715/TC (October 2017) in the form of white or

off-white viscous liquid with faint characteristic odor, in an aqueous phase together

with suitable formulants. After gentle agitation, the formulation shall be

homogeneous (Note 1) and suitable for dilution in water.

2 Active ingredient

2.1 Identity tests (715/EW/M/2, CIPAC Handbook M, p.184, 2009)

The active ingredient shall comply with an identity test and, where the identity

remains in doubt, shall comply with at least one additional test.

2.2 Pyriproxyfen content (715/EW/M/3, CIPAC Handbook M, p.184, 2009)

The pyriproxyfen content shall be declared (g/kg or g/l at 20 ± 2ºC, Note 2) and,

when determined, the average measured content shall not differ from that declared

by more than the following tolerance:

Declared content, g/kg or g/l at 20 ± 2ºC            Tolerance

above 100 up to 250                                        ± 6% of the declared content

3 Physical properties

3.1 Pourability (MT 148.1, CIPAC Handbook F, p.348, 1995)

Maximum "residue": 6 %.

3.2 Emulsion stability and re-emulsification (MT 36.3, CIPAC Handbook K, p.137,

2003)

The formulation, when diluted at 25 ± 2°C (Note 3) with CIPAC Standard Waters A

and D, shall comply with the following:

Time after dilution         Limits of stability

0 h                                    Initial emulsification complete

0.5 h                                 "Cream", maximum: 0.5 ml

2.0 h                                 "Cream", maximum: 0.5 ml

                                          "Free oil", maximum: 0.5 ml

24 h                                  Re-emulsification complete

24.5 h                               "Cream", maximum: 0.5 ml

                                          "Free oil": maximum trace

Note: in applying MT 36.3, tests at 24 h are required only where the results at 2 h are in doubt.

3.3 Persistent foam (MT 47.3, CIPAC Handbook O, p.177, 2017)

Maximum: 20 ml after 1 min.

4 Storage stability

4.1 Stability at 0°C (MT 39.3, CIPAC Handbook J, p.126, 2000)

After storage at 0 ± 2°C for 7 days, no separation of particulate or oily matter shall be

visible after gentle agitation.

4.2 Stability at elevated temperature (MT 46.3, CIPAC Handbook J, p.128, 2000)

After storage at 54 ± 2°C for 14 days, the determined average active ingredient

content must not be lower than 97% relative to the determined average content

found before storage (Note 4) and the formulation shall continue to comply with the

clauses for:

– emulsion stability and re-emulsification (3.2).