Diazinon TC, WP, EC

Diazinon TC, WP, EC

DIAZINON TECHNICAL (with stablizer)

FAO Specification 15/TC/S(1988)

.1   DESCRIPTION

       The material shall consist of diazinon together with related manufacturing impurities and shall be a yellow to brown liquid, free from visible extraneous matter and added modifying agents, other than the stablizer(s).

.2   ACTIVE INGREDIENT

       .2.1 Identity tests*

       Where the identity of the active ingredient is in doubt, then it shall comply with at least one additional test.

       .2.2 Diazinon [15/1/M/3.3; CIPAC 1A. p. 1199 (Referee methods) or                                        15/1/M/1.2; CIPAC 1. p.316]

       The diazinon content shall be declared (g/kg) and when determined, the content obtained shall not differ from that declared by more than +/- 25 g.

.3   IMPURITIES

       .3.1 0,S-TEPP

       Maximum: 0.2 g/kg

       .3.2 S,S-TEPP

       Maximum: 2.5 g/kg

       .3.3 Water [MT.30.1.CIPAC 1. p.897 (Referee Method)or MT.30.2. p. 899]

       Maximum: 0.6 g/kg

       .3.4 Acetone insolubles [MT 27; CIPAC 1. p. 894]

       Maximum: 1.5 g/kg

.4   PHYSICAL PROPERTIES

       .4.1 Acidity [MT 31.1.1; CIPAC 1. p. 903 or 31.2.1. p. 905]

       Maximum: 0.3 g/kg calculated as H2S04.

DIAZINON WETTABLE POWDERS

FAO Specification 15/WP/S 1988)

.1   DESCRIPTION

       The material shall consist of a homogeneous mixture of technical diazinon [complying with the requirements of FAO specification 15/TC/S (1988)] together with filler(s) and any other necessary formulants. It shall be in the form of a fine powder, free from visible extraneous matter and hard lumps.

.2    ACTIVE INGREDIENT

       .2.1 Identity tests*

       Where the identity of the active ingredient is in doubt, then the isolated active ingredient shall comply with at least one additional test.

       .2.2 Diazinon [15/3/M/2.3. CIPAC 1A. p. 1201 (Referee Method) or 15/3/M/1.2                       CIPAC 1. p. 323]

       The diazinon content shall be declared (g/kg) and when determined, the content obtained shall not differ from that declared by more than the following amounts:

Declared content                  Permitted tolerance

Up to 500 g/kg                +/- 5% of the declared content

Above 500 g/kg                     +/- 25 g

.3   PHYSICAL PROPERTIES

       .3.1 pH of aqueous dispersion [MT.75.2. CIPAC 1A,  p. 1590]

       Minimum: 7.0

       Maximum: 10.5

       .3.2 Wet sieve test [MT.59.3 CIPAC 1. p. 981]

       Maximum: 2% retained on a 75µm test sieve.

       .3.3 Suspensibility [15/3/M/2.6. CIPAC 1A p. 1201 (Notes 1 and 2)

       A minimum of 50% of the diazinon content found under .2.2, shall be in suspension after 30 min. in CIPAC Standard Water C.

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

       .3.4 Persistent foam [MT.47. CIPAC 1. p. 954]

       Maximum: 25 ml after 1 min.

       .3.5 Wetting of the product [MT.53.3.1 CIPAC 1 p. 967]

       It shall be completely wetted in 1 min. without swirling.

.4   STORAGE STABILITY

       .4.1 Stability at 54°C [MT.46.1.1. CIPAC 1 p. 951]

       After storage at 54 +/- 2°C for 14 days the product shall continue to comply with .2.2, (except that the minimum permitted diazinon content shall be 90% of that found under .2.2, .3 and .3.2).

DIAZINON EMULSIFIABLE CONCENTRATES

FAO Specification 15/EC/S(1988)

.1   DESCRIPTION

       The material shall consist of technical diazinon [complying with the requirements of FAO Specification 15/TC/S(1988)] dissolved in suitable solvents and with other necessary formulants. It shall be in the form of a stable liquid free from suspended matter and sediment.

.2   ACTIVE INGREDIENT

       .2.1 Identity tests*

       Where the identity of the active ingredient is in doubt, then the isolated active ingredient shall comply with at least one additional test.

       .2.2 Diazinon [15/5/M/2.4. CIPAC 1A. p. 1203 (Referee method) or 15/5/M/1.3                       CIPAC 1. p. 328]

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

Declared content                 Permitted tolerance

Up to 500 g/l or g/kg             +/- 5% of the declared content

Above 500 g/l or g/kg           +/- 25 g

.3   IMPURITIES

       .3.1 0,S-TEPP*

       Maximum: 0.22 x x mg/kg where x is the diazinon content found under .2.2

       .3.2 S,S-TEPP*

       Maximum: 2.8 x x mg/kg where x is the diazinon content found under .2.2 .

       .3.3 Water [MT.30.1. CIPAC 1. p. 897]

       Maximum: 2 g/kg

.4   PHYSICAL PROPERTIES

       .4.1 Acidity [MT.31.1.3. CIPAC 1. p. 904 or 31.2. p. 905]

       Maximum: 0.5 g/kg calculated as H2S04.

       .4.2 Emulsion stability and Re-emulsification [MT.36.1.1. CIPAC 1. p. 910]

       After the Heat Stability test (.5.2), the product when diluted at 30°C with CIPAC Standard Water A and C, shall comply with the following:

 Time after dilution        Limits of Stability

0h                                     Initial emulsification, complete 

0.5 h                                Cream, maximum 1 ml

2 h                                    Cream, maximum 4 ml

                                          Free oil, nil

24 h (note 7)                   Re-emulsification, complete

24.5 h (note 7)                Cream, maximum 4 ml

                                          Free oil, maximum 2 ml

       In special cases, a test using CIPAC Standard Waters A and C before the heat stability test, may be necessary.

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

       .4.3 Flash point [MT.12. CIPAC 1. p. 846]

       If required, the flash point of the product shall be not lower than the minimum declared flash point. A closed cup method shall be used and the method stated (Note 8).

.5   STORAGE STABILITY

       .5.1 Stability at 0°C [MT.39.1. CIPAC 1. p. 930]

       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. CIPAC 1. p. 952]   

       After storage at 54 +/-2°C for 14 days in a closed container, the product shall continue to comply with .2.2 (expect that the minimum permitted diazinon content shall be 908 of that found under .2.2), .3.1, .3.2 and .4.1.