Products
PROPINEB
Fungicide: alkylenebis(dithiocarbamate)
NOMENCLATURE
Common name propineb (BSI, E-ISO, JMAF); propinèbe
((m) F-ISO)
IUPAC name polymeric zinc propylenebis(dithiocarbamate)
Chemical Abstracts name [[(1-methyl-1,2-ethanediyl)bis[carbamodithioato]](2-)]zinc
homopolymer
CAS RN [12071-83-9] monomer; [9016-72-2] (formerly [31530-30-0])
homopolymer EEC no. 235-134-0 Development
codes Bayer 46 131; LH 30/Z (Bayer)
PHYSICAL CHEMISTRY
Mol. wt. 289.8 (theoretical monomer) M.f. (C5H8N2S4Zn)x Form White
powder, with a slight, characteristic smell. M.p. Decomposes
above 150 ºC V.p. <1 mPa (20 ºC) KOW logP
= -0.26 (PTU, main metabolite) (20 ºC) S.g./density 1.813
g/ml (23 ºC) Solubility In water 0.01 g/l
(20 ºC). In toluene, hexane, dichloromethane <0.1 g/l.; in
DMF + DMSO >200 g/l. Stability Stable when
dry. Decomposed by moisture, and in acidic and alkaline media; DT50 (22 ºC)
(est.) 1 d (pH 4), c. 1 d (pH 7), >2 d (pH 9).
COMMERCIALISATION
History Fungicide reported by H. Goeldner (Pflanzenschutz-Nachr.
(Engl. Ed.), 1963, 16, 49) and reviewed by F.
Grewe (ibid., 1967, 20, 581). Introduced
by Bayer AG. Patents BE 611960 Manufacturers Bayer
APPLICATIONS
Biochemistry Non-specific, multi-site fungicide. Mode of action Basic foliar fungicide with protective action. Conidia or germinating conidia are killed by contact. Uses Control of downy mildew, black rots, red fire disease, and grey mould on vines; scab and brown rot on apples and pears; leaf spot diseases on stone fruit; Alternaria and Phytophthora blights, downy mildew, Septoria leaf spot, and leaf mould in tomatoes; Phytophthora and Alternaria blight of potatoes; downy mildew (blue mould) on tobacco; rusts and leaf spot diseases on ornamentals; rusts, leaf spot diseases and downy mildews on vegetables. Also used on citrus fruit and berry fruit, rice and tea. Phytotoxicity Non-phytotoxic when used as recommended, also in young sensitive growing stages. Formulation types DP; WG; WP. Compatibility Compatible with most other powder-formulated pesticides. Not stable when combined with alkaline materials.