Review of CIPAC MT-methods_october 2010_final_pab_rev

Transcription

1 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / MT 4 was already agree was already 15.1 method obsolte superseded by MT 184 1) (should not be ) 2) Should be "" for it is MT 16 Material insoluble in dichlorodifluoromethane 1) very complicated method. Not many labs would be able to do it! MT 19 Phosphate buffer solutions not longer 1) not needed method MT 20 Stability of dilute emulsion obsolte superseded by MT ) old method. New MT ) (should not be ). MT 21 Silica for chromatography not longer 21.1 Silica not longer 21.2 Sorbisilâ M 60 not longer 21.3 Florisil not longer MT 24 Phosphorus(V) oxide MT 25 Sand for germination tests 1) not needed method 1) not needed method 1) not needed method 1) not needed method 1) reference in MT Commercially available. method. MT 26 John Innes compost 26.1 Seeding Compost - with fertilizer 26.2 Seeding Compost - without fertilizer MT 28 Dimedone derivative method. method. method. 1) useful simple method. No instrument is needed. Some skill in organic preparative chemistry is needed. page 1 of 12

2 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / 30.1 Karl Fischer method obsolte superseded by MT 30.5 method. Unstable chemicals 30.3 Free water - 'Speedy' method 30.4 Water in acetone solutions MT 33 Tap density obsolte superseded by MT 186. Fig 19 needs to be included in MT 186 or MT MT 34 Dustability tests after tropical storage method. Superseded by MT 30.5 with special solvents and titrants. method. Nowdays commercial Tap Density Testers which fulfile USP, EP and ASTM requirements are available on the market e.g.sotax TD 1 2), Fig 19 needs to be included in MT 186 or MT (should not be ) 36.1 Five per cent v/v oil phase obsolte superseded by MT ) superseded by MT ) (should not be 3) Should be "" for it is per cent v/v oil phase obsolte ditto 1) (chould not be ) 2) "Should be """" for it is (not checked in this case)" Is is mentioned in valid (checked by ) MT 37 Isolation of active ingredient not longer 37.1 Extraction with acetone not longer 37.2 Extraction with petroleum spirit not longer 37.3 Removal of solvents by distillation not longer MT 38 Organic chlorine not longer 38.1 Potassium - xylene method not longer methods. methods. page 2 of 12

3 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / 38.2 Stepanov method not longer 38.3 Oxygen flask method not longer 39.1 Emulsifiable concentrates and solutions obsolte superseded by MT ) superseded by MT ) (should not be ) 3) Should be "" for it is MT 40 MT Aqueous solutions obsolte ditto 1) superseded by MT ) Should be "" for it is Water content and suspended solids in technical esters of phenoxyalkanoic acids Particle size of copper and sulphur products 1) for MT 40.1 water content is alternative MT MT 40.2 is obolete superseded by MT 187 method. MT 187, instruments commercially available 42.1 Formulations without carriers obolete ditto method. MT 187, instruments commercially available 42.2 Formulations containing carriers obolete ditto method. MT 187, instruments commercially available MT 43 Particle size distribution of DDT wettable powders obolete ditto method. MT 187, instruments commercially available 46.1 General method obsolte superseded by MT ) Should be "" for it is 47.1 Persistent foam superseded my MT 47,2 2) Should be "" for it is MT 50 Alumina method 58.1 Sampling not longer 1) MT 166 looks aplicable to solid formulations. page 3 of 12

4 Review of MT-methods_october 2010_final_pab_rev 58.2 Preparation of sample not longer Remarks Comments after 54. Meeting Decision Further action / 1) 18 C is not laboratory temperature 58.3 Sieve analysis not longer MT 59 Sieve analysis superseded by MT MT 170 and MT 187, respectively, better MT 170 1) (should not be ) 2) Should be "" for it is (not checked) Is is mentioned in valid (checked by ) 59.1 Dry sieving - dusts ditto, better MT 170 2) (should not be ) 59.2 Granular products ditto, better MT 170 2) (should not be ) 59.3 Wet sieving superseded by MT 185 1) superseded by MT 185 2) (should not be ) 59.4 Sieve test for granular materials superseded by MT 170 1) similar to MT 58.3., better MT 170 2) (should not be ) MT 60 Solubility of the alkali metal salts of phenoxyalkanoic acid herbicides and their solid formulations superseded by MT 179 1) method without quantitative evaluation. MT 179 looks applicable MT 62 was already agree was already MT 63 was already agree was already 64.1 HCH technical method 64.2 HCH dusts and dispersible powders method 64.3 HCH emulsifiable concentrates and solutions method 64.4 DDT technical WHO specification only method chromatographic methods page 4 of 12

5 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / 64.5 DDT dusts and wettable powders method 64.6 DDT emulsifiable concentrates and solutions method MT 65 MT 66 Organic chlorine in pesticides in aqueous emulsions Free acidity of phenoxyalkanoic esters MT 67 Fat extraction apparatus MT 68 Total chlorides 68.1 Chlorides in phenoxyalkanoic acids 68.2 Chlorides in technical mercurial compounds method superseded by MT 191 1) superseded by MT 191 method method method method MT 70 was already agree was already MT 72 was already agree was already MT 74 Neutrality superseded by MT 75,3. The colour of the sample can influence the colour of resulting mixture 75.1 General method superseded by MT 75,3, buffers commercially available 75.2 ph of aqueous dispersions superseded by MT 75,3 MT 76 Solubility in aqueous triethanolamine MT 77 Determination of 1-chloro-2,3- epoxypropane MT 79 Acid wash MT 80 Residue on evaporation not quoted in an existing FAO specification method 1) epichlorohydrin is a precursor in the synthesis of many organic compounds. Does agrochemistry need this compound? method method page 5 of 12

6 Review of MT-methods_october 2010_final_pab_rev 80.1 Low boiling products 80.2 Cresols Remarks Comments after 54. Meeting Decision Further action / method method MT 81 Soluble alkalinity superseded by MT 191 1) I agree. MT 191 is a new one MT 82 Soluble chlorides MT 83 Seed adhesion test for powders for seed treatment 1) Does any specifications need this method? superseded by MT 194 1) MT 194 superseded this method 2) (should not be ) 83.1 Cereal seeds superseded by MT 195 2) (should not be ) 3) MT Pea seeds superseded by MT 196 2) (should not be ) 3) MT 194 MT 85 was already agree was already 86.1 For GLC 86.2 For Partition Chromatography MT 87 Materials soluble in chloroform 87.1 Hot solution 87.2 Cold solution MT 88 was already agree was already MT 89 was already agree was already MT 90 Materials soluble in toluene MT 91 was already agree was already superseded by MT 194 superseded by MT 194 page 6 of 12

7 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / MT 96 was already 1) old TLC and PC chromatography. Obsolete was already MT 97 Separation and identification of herbicides 98.2 Atomic absorption spectophotometric method In mercurials MT 101 Heptane-insoluble materials in aldrin not quoted in an existing FAO specification 1) old TLC and PC chromatography. Obsolete 1) FAO specification Copper oxychloride WP 1) mercurial chlorides are not nowdays used as A.I. 1) we do not need it MT 102 was already agree was already MT 103 was already agree was already Organomercury compounds ditto 1) we do not need it MT 105 Preparation of nitrogen complexes of nitro compounds Technical compounds Esters methods. methods. methods. MT 106 was already agree was already Ammonium salt ditto 1) we do not need it Sodium salt ditto 1) we do not need it Triethanolamine salt ditto 1) we do not need it MT 109 Acid content of dinitro compounds 1) we do not need it MT 111 was already agree was already MT 112 was already agree was already MT 113 Silanization of gas chromatographic columns Is is mentioned in valid (checked by ) page 7 of 12

8 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / Off column On column MT 114 Corrections for interfering peaks MT 115 was already was already MT 116 Mercury(II) salts - characteristic reactions Precipitation of sulphide Deposition of mercury on copper Reduction with tin(ii) chloride Precipitation of mercury(ii) iodide Precipitation of mercury(ii) oxide with sodium hydroxide Precipitation of ammonium mercury(ii) chloride with ammonia solution MT 117 Test for chloride 1) need it 1) need it 1) need it 1) need it 1) need it 1) need it 1) need it 1) general simple methods. Tests can be useful Liberation of chlorine ditto 1) general method. Test can be useful Precipitation of silver chloride ditto 1) useful test (qualitative laboratory test for e.g. chlormequat chloride) Formation of chromyl dichloride (CrOCl2) ditto Liberation of iodine 1) general method. Test can be useful CrO2Cl2 is correct formula. 1) general simple methods. Tests can be useful page 8 of 12

9 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / Precipitation of silver iodide 1) general simple methods. Tests can be useful Liberation of iodine 1) general simple methods. Tests can be useful Precipitation of mercury(ii) iodide 1) general simple methods. Tests can be useful Precipitation of copper(i) iodide 1) general simple methods. Tests can be useful MT 119 was already agree was already MT 120 Tests for phosphates general simple methods. Tests can be useful in lab Preparation of sample 1) general simple methods. Tests can be useful Precipitation of silicic acid and 1) general simple methods. Tests can be useful evaluation of ammonia Formation of silicic acid gel 1) general simple methods. Tests can be useful Precipitation of silver silicate 1) general simple methods. Tests can be useful MT 122 was already agree was already MT 123 was already agree was already MT 124 was already agree was already MT 125 was already agree was already MT 128 was already agree was already MT 129 Gas liquid chromatography of phenoxyalkanoic and other herbicides Preparation of solutions for methylation page 9 of 12

10 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / Methylation of acids Gas chromatography MT 131 was already agree was already MT 132 was already agree was already MT 133 Determination of nitrophenols - titanium(iii) chloride method MT 134 Preparation of 2-pyridylamine (2-amino-npyridine) longer complexes of nitro compounds Technical nitrophenols Technical nitrophenol esters MT 135 was already agree was already MT 136 was already agree was already MT 137 Identification of urea herbicides MT 138 was already agree was already MT 140 was already agree was already MT 141 Determination of free amines in urea not quoted in an existing herbicides FAO specification MT 142 Detection and identification of impurities in substituted phenylurea herbicides MT 143 was already agree was already MT 144 was already agree was already MT 145 Active ingredients containing phosphorus MT 146 Oil content' of emulsifiable pesticide concentrates MT 147 Retention test for seed treatment powders used on cereal seeds 1) MT 194 superseded this method MT 149 Packing columns for gas chromatography agree page 10 of 12

11 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / MT 150 was already 1) not needed was already MT 152 Identification of amines Electrochemical detector method MT 156 was already agree was already MT 158 Determination of mercury on treated seeds 1) Simple nice method. Is mercury stll allowed to used for seed treatment? MT 159 Pour and tap bulk density of granular materials obsolte superseded by MT 186 method. Nowdays commercial Tap Density Testers which fulfile USP, EP and ASTM requirements are available on the market e.g.sotax TD 1 2) (should not be ) MT 161 Suspensibility of aqueous suspension concentrates not longer figure 50 has to be amended and transferred to MT ) New MT Paper chromatographic method MT 167 Wet sieving after dispersion of water dispersible granules obsolte superseded by MT 185 1) New method MT 185 2) (should not be ) 3) "Should be """" for it is (not checked)" Is is mentioned in valid (checked by ) MT 168 Determination of the suspension stability of water dispersible granules obsolte superseded by MT 184 1) New method Mt 184. Obsolete and not chemical objective method 2) (should not be ) 3) "Should be """" for it is (not checked)" Is is mentioned in valid (checked by ) page 11 of 12

12 Review of MT-methods_october 2010_final_pab_rev Remarks Comments after 54. Meeting Decision Further action / Standard-method obsolte ditto method. Nowdays commercial Tap Density Testers which fulfile USP, EP and ASTM requirements are available on the market e.g.sotax TD 1 2) (should not be ) Is is mentioned in valid (checked by ) MT Method with dry substance jolting volumeter Suspensibility of water dispersible powders (Simplified method) not longer 1) New method MT 186 2) (should not be ) superseded by MT 184 1) New method MT 184 2) (should not be ) Is is mentioned in valid (checked by ) MT 183 The use of the agrochemical emulsion tester (AET) for the determination of the stability of dilute emulsions 1) no many lab has this tester. It is much cheaper to use method MT 36.3 page 12 of 12