Metalaxyl

Common name: Metalaxyl 
Chemical name: methyl N-(methoxyacetyl)-N-(2,6-xylyl)-DL-alaninate
Molecular formula: C₁₅H₂₁NO₄
CAS RN: 57837-19-1
Use: To control diseases caused by air-and soil-borne Peronosporales on a wide range of temperate, subtropical and tropical crops. Foliar sprays with mixture of metalaxyl and protectant fungicides are recommended to control air-borne diseases caused by Pseudoperonospora humuli on hops, on potatoes and tomatoes, Peronospora tabacina on tobacco, Plasmopara viticola on vines, Bremia lactucae on lettuce, and downy mildews on various vegetables, at 200-300 g/ha. Soil applications of metalaxyl alone are used to control soil-borne pathogens causing root and lower stem rots on avocado and citrus, at 500-1500 g/ha. Seed treatments control systemic Peronosporaceae on maize, peas, sorghum and sunflowers, as well as damping-off (Pythium spp.) of various crops.

Specification:
Metalaxyl 98% Min. Technical grade

Metalaxyl                                             98.0% Min.

Appearance                                      White crystals

Acidity (calculated as H₂SO₄)               0.1% Max.

Insolubles in acetone                           0.1% Max.

2,6-dimethylaniline content                  0.1% Max.

Metalaxyl 35% WP

Metalaxyl                                   35.0% Min.

Appearance                      Light gray yellow to rose powder

Moisture content                        4.0% Max.

pH value                                     5.0-8.0

Particle size (through 43μm sieve)          98% Min.

Metalaxyl 250 g/l EC

Metalaxyl                                                   250.0 g/l Min.

Acidity (calculated as H₂SO₄)                        0.3% Max.

Moisture content                                           0.5% Max.

Emulsion stability (at 200 times)                    Qualified

Metalaxyl + Mancozeb 72% WDG

Metalaxyl                                             8.0% Min.

Mancozeb                                            64.0% Min.

Suspensibility of Metalaxyl                    90% Min.

Suspensibility of Mancozeb                   60% Min.

pH value                                                 6.0-9.0

Moisture content                                   3.0% Max.

Wettability                                              15 s Max.

Permanence foamability (1 min later)     25 ml Max.

Particle size (through 45μm sieve)          98% Min.

Degree of dispersion                               80% Min.