Diflufenican 30%SC 98%TC Weedicide Agricultural Chemicals Pesticide Agrochemicals Selective Herbicide

                                                                                         diflufenican

COMMON NAME: diflufenican (ISO)

STRUCTURAL FORMULA

EMPIRICAL FORMULA: C₁₉H₁₁F₅N₂O₂

RMM: 394.3

CAS REGISTRY NUMBER: 83164-33-4

CIPAC CODE NUMBER: 462

CHEMICAL NAME:

N-(2,4-difluorophenyl)-2-[3-(trifluoromethyl)phenoxy]-3-pyridinecarboxamide (CA)

1. DESCRIPTION

The material shall consist of diflufenican together with related manufacturing impurities and shall be a brown damp crystalline powder free from visible extraneous matter and added modifying agents.

2. ACTIVE INGREDIENT

2.1 Identity tests (

An identity test is required if the identity of the active ingredient is in doubt (e.g. chromatographic retention time under analytical conditions of the method of analysis or IR Spectrum).

2.2 Diflufenican (

The diflufenican content shall be declared (not less than 970 g/kg expressed on the dry weight basis) and, when determined, the content obtained shall not differ from that declared by more than ± 25 g/kg.

3. IMPURITIES

3.1 Water (MT 30.2, CIPAC F, p. 93)

Maximum: 100 g/kg.

4. PHYSICAL PROPERTIES

4.1 Melting point (MT 2 on the dried material, CIPAC F, p. 5)

The melting point shall be in the range 159-160°C and shall not be depressed on admixture with an equal quantity of pure diflufenican.

4.2 pH range (MT 75, CIPAC F, p. 205)

pH range: 5.0 to 7.0.

1. DESCRIPTION

The material shall consist of a suspension of fine particles of technical diflufenican, complying with the requirements of FAO specification 462/TC/S/F (1997), in an aqueous phase, together with suitable formulants. After gentle agitation, the material shall be homogeneous (Note 1) and suitable for further dilution in water.

2. ACTIVE INGREDIENT

2.1 Identity tests

An identity test is required if the identity of the active ingredient is in doubt (e.g. chromatographic retention time under conditions of the method of analysis or IR Spectrum).

2.2 Diflufenican 

The diflufenican content shall be declared (g/l at 20°C, Note 3) and, when determined, the content obtained shall not differ from that declared by more than the following amounts:

3. PHYSICAL PROPERTIES

3.1 Mass per millilitre at 20°C (MT 3.3, CIPAC F, p. 18) (Note 3)

The range of the mass per millilitre (g/ml) at 20°C shall be declared.

3.2 pH range (MT 75, CIPAC F, p. 205)

pH range: 5.0 to 9.0.

3.3 Pourability (MT 148, CIPAC F, p. 348) (Note 4)

Maximum "residue": 5%.

Maximum "rinsed residue": 0.25%.

3.4 Spontaneity of dispersion (MT 160, CIPAC F, p. 391) (Note 5)

A minimum of 80 % of the content found under 2.2 shall be in suspension after 5 min. in CIPAC Standard Water D at 30°C ± 2°C.

Alternatively, if the buyer required other CIPAC Standard Waters or temperatures to be used, then this shall be specified when ordering.

3.5 Suspensibility (MT 161, CIPAC F, p. 394. Note 5)

A minimum of 70% of the content found under 2.2 shall be in suspension after 30 min. in CIPAC Standard Water D at 30°C ± 2°C.

Alternatively, if the buyer requires other CIPAC Standard Waters or temperatures to be used, then this shall be specified when ordering.

3.6 Wet sieve test (MT 59.3, CIPAC F, p. 179. Note 6)

Maximum: 1% of the product shall be retained on a 75 ìm test sieve.

3.7 Persistent foam (MT 47.2, CIPAC F, p. 152)

Maximum: 15 ml after 1 min. (10 g/l dilution).

4. STORAGE STABILITY

4.1 Stability at 0°C (MT 39.1, CIPAC F, p. 128)

After storage at 0°C ±1°C for 7 days, the product shall continue to comply with 3.4, 3.5 and 3.6.

4.2 Stability at 54°C (MT 46.1, CIPAC F, p. 149)

After storage at 54 ± 2°C for 14 days, the determined average active ingredient content must not be lower than 95% relative to the determined average content found before storage (Note 7) and the product shall continue to comply with 3.2, 3.3, 3.4, 3.5 and 3.6.