Propamocarb

TC & FORMULATION: 96%TC, 722G/L SL, 25%WP

Structure Formula   

OMENCLATURE

propamocarb hydrochloride

IUPAC name propyl 3-(dimethylamino)propylcarbamate hydrochloride 

Chemical Abstracts name propyl [3-(dimethylamino)propyl]carbamate hydrochloride 

CAS RN [25606-41-1]  EEC no. 247-125-9

propamocarb

Common name propamocarb (BSI, E-ISO, ANSI); propamocarbe ((m) F-ISO)

IUPAC name propyl 3-(dimethylamino)propylcarbamate 

Chemical Abstracts name propyl [3-(dimethylamino)propyl]carbamate 

CAS RN [24579-73-5]

PHYSICAL CHEMISTRY

propamocarb hydrochloride

Composition The aqueous concentrate contains 780 g/l propamocarb hydrochloride.  Mol. wt. 224.7  M.f. C9H21ClN2O2  Form Colourless, faintly aromatic, hygroscopic crystals.  M.p. 64.2 °C  V.p. 3.85 ´ 10-2 mPa (20 °C)  KOW logP = -1.21 (pH 7)  Henry <1.7 ´ 10-8 Pa m3 mol-1 (20 °C, calc.)  S.g./density 1.085 g/ml (20 °C, aqueous concentrate)  Solubility In water >500 g/l (20 °C). In methanol 656, dichloromethane >626, acetone 560, ethyl acetate 4.34, toluene 0.14, hexane <0.01 (all in g/l, 20 °C).  Stability Stable to hydrolysis, to temperatures up to 400 ºC, and to photolysis.  pKa 9.3 (20 °C)  Other properties Surface tension 40.9 mN m-1 (40 °C). 

propamocarb

Mol. wt. 188.3  M.f. C9H20N2O2  V.p. 730 mPa (25 °C)  KOW logP = 0.84 (20 °C)  Henry 1.5 ´ 10-4 Pa m3 mol-1 (25 °C)  Solubility In water >900 g/l (pH 7.0, 20 °C). In hexane >883, methanol >933, dichloromethane >937, toluene >852, acetone >921, ethyl acetate >856 (all in g/l, 20 °C).  pKa 9.5, strong base (K. Chamberlain et al., Pestic. Sci., 47,265 (1996)) 

APPLICATIONS

Biochemistry Reduces mycelial growth and development of sporangia and (zoo)spores; influences the biochemical synthesis of membranes.  Mode of action Systemic fungicide with protective action. Absorbed by the roots and leaves, and transported acropetally. 

propamocarb hydrochloride

Uses Specific control of phycomycetous diseases (Pythium, Phytophthora, Aphanomyces, Bremia, Peronospora, and Pseudoperonospora spp.). In particular, control of Pythium and Phytophthora spp. in vegetables, ornamentals, glasshouse tomatoes, glasshouse cucumbers, tulips, tobacco, and in forestry seedbeds; Pythium blight on turf; downy mildew on lettuce, cucurbits and cabbages; Phytophthora infestans in potatoes and tomatoes; Phytophthora cactorum on strawberries; etc. Applied to the soil, or used as a dip treatment (for bulbs and tubers) or seed treatment, and as a foliar spray in late-season applications. Formulation types SC; SL.

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