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close this bookFAO specifications for plant protection products. Fungicides: Flusilazole (tentative). Herbicides: Chloridazon, Chlorsulfuron (tentative), Diflufenican, Metsulfuron Methyl. Insecticides: Methomyl, Thiodicarb. Plant growth regulators: Ethephon. (1998)
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Flusilazole emulsion in water

FAO Specification 435/EW/ts/-(1997)


The material shall consist of a solution of technical flusilazole (complying with FAO specification requirements) in suitable solvents emulsified in water and with other necessary added formulants. It shall be in the form of a stable liquid, free from visible suspended matter and sediment.


2.1 Identity Test (435/m/-)

The analytical method is available from the Pesticide Information Officer, FAO Plant Production and Protection Division.

Where the identity of the active ingredient is in doubt, it should be confirmed by comparison of the GC retention time using the analytical method available from FAO.

Where the identity of the material remains in doubt, it may be confirmed by comparison with the infrared spectra.

2.2 Flusilazole (435/m/-)

The flusilazole content shall be declared (g/kg or g/l at 20°C, Note 1) and, when determined, the content shall not differ from that declared by more than the following amounts:

NOTE 1. In case of dispute the tolerance shall apply to the content expressed in g/kg.

Declared content of active ingredient in g/kg

Permitted tolerance

above 100 up to 250

± 6% of declared content

above 250 up to 500

± 5% of declared content

above 500

± 25 g/kg or g/l


3.1 Maximum

1 g/kg insoluble in acetone found under 2.2 Flusilazole Technical.


4.1 Mass per millilitre of 20°C (MT 3.3, CIPAC 1C, p. 2247)

If required, the mass per millilitre (g/ml) at 20°C shall be declared.

4.2 pH range (MT 75.2)

pH range: 3 to 9.

4.3 Rinsability (CIPAC MT 148)

The residue remaining after the container is emptied will be less than 2.5% and the rinsed residue will be less than 0.2%.

4.4 Wet sieve test (Method under consideration)

4.5 Emulsion stability and re-emulsification (MT 36.1.1)

The product, when diluted at 30°C (Note 2) with CIPAC standard waters A and C shall comply with the following:

Time after dilution

Limits of stability

0 h Initial emulsion:


0.5 h

“cream”, maximum:

1 ml

2.0 h

“cream”, maximum:

1 ml

“free oil”, maximum:

0 ml

24 h (Note 3)



24.5 h (Note 3)

“cream”, maximum:

1 ml

“free oil”, maximum:

0 ml

4.6 Persistent foam (MT 47.2) 3 ml maximum at 1 minute.

4.7 Flashpoint (MT 12, CIPAC)

The flashpoint shall be declared and not be lower than 25°C. A closed cup method shall be used.


5.1 Stability at 0°C (MT 39.1)

After storage at 0 ± 1°C for 7 days, the volume of solid and/or liquid which separates shall be not more than 0.3 ml.

5.2 Stability at 54°C (MT 46.1.3)

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, and the product shall continue to comply with 4.1, 4.3 and 4.4.


1. If the buyer requires both g/kg and g/l at 20°C, then in case of dispute, the analytical result shall be calculated as g/kg.

2. Unless another temperature is specified.

3. These tests need only be carried out in case of doubt as to the emulsion stability result of the 2 h test.