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ISO common name: |
ferbam |
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Chemical name |
|
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IUPAC: |
iron tris(dimethyldithiocarbamate) |
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iron(III) dimethyldithiocarbamate |
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ferric dimethyldithiocarbamate |
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CA: |
(OC-6-11)-tris(dimethylcarbamodithioato-S,S')iron |
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CAS registry no: |
14484-64-1 |
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CIPAC no: |
57 |
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EEC no: |
238-484-2 |
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Structural formula: |
|
|
Molecular formula: |
C9H18FeN3S6 |
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Molecular mass: |
416.51 |
Physical and chemical properties
Pure active ingredient
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Vapour pressure: |
<1.2x10-4 Pa at 25°C (Lemal, 1986a). |
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Melting point: |
>120°C |
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Octanol/buffer pH |
8 |
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partition coefficient: |
log POW = -1.6 (Lemal, 19860) |
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Specific gravity: |
0.21 g/cm3 |
Lemal (1986a) measured the vapour pressure of ferbam by a gas saturation method. Nitrogen gas was passed through ferbam coated on a support material with a very high surface area and maintained at 25°C, then through a cotton wool dust filter followed by traps containing water. The contents of the absorption traps were analysed for iron by atomic absorption spectrometry. No iron was detected in the traps. The vapour pressure of ferbam at 25°C did not exceed 1.2 x 10-4 Pa.
Lemal (1986b) measured the octanol-water partition coefficient of ferbam (96%) according to OECD Guideline 107 (OECD 1981). Instead of water a pH 8 buffer was used. The octanol and aqueous phases were analysed for Fe using inductively coupled plasma emission spectrometry. The concentration of ferbam in the pH 8 buffer was about 40 times that in the octanol. In a series of tests the values for log Pow ranged from -1.6857 to -1.4582, with a median value of -1.6292 at 20°C.
Technical material
The Meeting was informed that ferbam technical is not produced as such, but the synthesised ferbam is taken through the manufacturing process direct to the formulated product.
Formulations
Water dispersible granule, 76WG.
