Sodium Dimethyldithiocarbamate (SDMDC) is a broad-spectrum microbiocide based on the dithiocarbamate chemistry, which works by chelating metal ions and disrupting microbial enzymatic systems. It is highly effective against bacterial, fungal, and algal populations in industrial process water and other contaminated systems. SDMDC is stable across a wide pH range and decomposes rapidly after use, making it environmentally favorable. It is widely used in paper mills to prevent microbial spoilage, in cooling water to control slime and fouling, and in oilfields to maintain the integrity of injection water. Its low dosage requirement and strong efficacy make it an economical choice for large-scale operations.
Fast-Acting Biocide – Rapid knockdown of microbial populations in active systems
Broad-Spectrum Control – Effective against bacteria, fungi, and algae
Non-Oxidizing Formula – Safe for use in corrosion-sensitive environments
Stable Across pH Range – Performs consistently from pH 5 to 9
Low Dosage, High Efficiency – Reduces chemical costs in large volume applications
Environmentally Friendly Degradation – Breaks down into non-toxic residues after use
Cooling Towers & Heat Exchangers – Controls microbial growth and prevents biofilm accumulation
Pulp & Paper Industry – Prevents slime formation and spoilage during the wet-end process
Oilfield Water Treatment – Inhibits sulfate-reducing and iron bacteria in injection systems
Recirculating Water Systems – Used in HVAC, manufacturing, and water-cooled systems
Wastewater Treatment – Reduces microbial load and assists in sludge control
Industrial Cleaning Formulations – Used in antimicrobial detergent and surface cleaner blends
| Property | Details |
|---|---|
| Product Name | SDMDC |
| Chemical Name | Sodium Dimethyldithiocarbamate |
| Chemical Type | Non-oxidizing dithiocarbamate biocide |
| Active Ingredient | SDMDC (≥40% in aqueous solution or >98% as solid) |
| Physical Form | Liquid or powder |
| Appearance | Yellow to amber liquid / pale yellow solid |
| Odor | Slight sulfurous odor |
| pH (1% Solution) | ~9.0 – 10.5 |
| Solubility | Completely soluble in water |
| Density @ 25 °C | ~1.18 g/cm³ (liquid) |
| Flash Point | Non-flammable (aqueous form) |
| Recommended Use Level | 50 – 300 ppm depending on application severity |
| pH Stability Range | 5.0 – 9.0 |
| Shelf Life | 12–18 months (sealed container) |
| Packaging Options | 25 kg drums, 250 kg barrels, 1000 kg IBCs |
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