Sodium Dimethyldithiocarbamate

Sodium dimethyldithiocarbamate, a water-soluble dithiocarbamate salt with the formula C₃H₆NNaS₂, is a multifunctional chemical renowned for its chelating and antimicrobial properties. This clear to pale yellow aqueous solution effectively precipitates heavy metals, controls microbial growth, and acts as a corrosion inhibitor, making it indispensable in wastewater management and biocide formulations.

Applications

Its dithiocarbamate moiety forms stable complexes with metals while disrupting microbial enzymes, enabling broad utility:

• Water Treatment: Precipitates heavy metals like copper, lead, and mercury in industrial effluents, achieving >99% removal efficiency for compliance with discharge limits.
• Biocides and Fungicides: Controls bacteria, fungi, and algae in cooling towers, paper mills, and agricultural sprays, extending system life without biofouling.
• Rubber Processing: Serves as a short-stopper in synthetic rubber polymerization, regulating molecular weight and preventing over-curing in SBR production.
• Corrosion Inhibition: Chelates dissolved ions in oilfield and boiler waters, reducing pitting and scaling on metal surfaces.
• Wood Preservation and Textiles: Acts as a preservative against rot and mildew in lumber and fabrics, providing long-lasting protection in humid environments.
• Pesticide Formulations: Enhances efficacy as an insecticide and miticide component, supporting integrated pest management in crops.

Global demand exceeds 20,000 tons annually, driven by stricter wastewater regulations and sustainable biocide needs.

Why Choose Aozun Chem’s Sodium Dimethyldithiocarbamate?

• Consistent Quality: Exceeds REACH and EPA standards, with <0.5% impurities for reliable precipitation and biocidal action.
• Optimized Pricing: Bulk volumes at competitive rates, tailored for high-consumption sectors.
• Global Supply Chain: Efficient delivery to Asia, Europe, and North America, with MOQs from 1 MT.
• Application Support: Expert dosing recommendations and compatibility testing to maximize performance.
• Eco-Responsible Design: Biodegradable under aerobic conditions, minimizing persistent residues in treated waters.

Rely on Aozun Chem’s SDDC to safeguard your systems and meet regulatory goals effortlessly.

Frequently Asked Questions (FAQs)

What is it, and what are its main chemical properties?

Sodium dimethyldithiocarbamate (SDDC, NaS₂CN(CH₃)₂) is a sodium salt of dimethyldithiocarbamic acid, characterized by high water solubility (>40% active), a density of 1.17 g/cm³, and thermal stability up to 120°C. It functions as a chelator and biocide, with global production focused on aqueous formulations for easy handling.

How is sodium dimethyldithiocarbamate produced?

It is manufactured by the sequential reaction of dimethylamine with carbon disulfide to form dimethyldithiocarbamic acid, followed by neutralization with sodium hydroxide. This exothermic process yields a 40% aqueous solution with >95% efficiency, emphasizing impurity control for industrial purity.

What safety precautions are necessary for handling sodium dimethyldithiocarbamate?

SDDC is a skin and eye irritant (may cause redness or burns) and harmful if swallowed (LD50 ~1 g/kg in rats); it is highly toxic to aquatic life. Use PPE (gloves, goggles, respirators), ensure ventilation, and store in cool (<30°C), non-metallic containers away from acids to prevent hydrogen sulfide release. Neutralize spills with hypochlorite.

Is sodium dimethyldithiocarbamate suitable for environmental or wastewater applications?

Yes, at dosed levels (10-50 ppm), it effectively removes heavy metals via precipitation without forming persistent sludge, complying with EPA effluent guidelines. Its aerobic biodegradability (>70% in 28 days) supports sustainable discharge, though monitoring for CS₂ vapors is advised.

What is the shelf life and storage recommendation for sodium dimethyldithiocarbamate?

In sealed, HDPE or lined steel containers at <25°C and neutral pH, it remains stable for 12-18 months, with minimal decomposition (<5% loss). Avoid light exposure and strong oxidizers; periodic assay checks ensure potency in long-term storage.

Can sodium dimethyldithiocarbamate be used in agricultural or food-related settings?

In non-direct contact applications, such as equipment sanitization or seed treatments, purified grades comply with FIFRA for fungicidal use. It is not approved for edible crops due to residue concerns, but excels in post-harvest preservation and irrigation system biocides.

How does sodium dimethyldithiocarbamate differ from other dithiocarbamates like sodium diethyldithiocarbamate?

SDDC’s shorter methyl chains enhance water solubility and reactivity for rapid metal chelation, ideal for water treatment, while diethyl variants offer better lipophilicity for rubber accelerators and slower microbial action. SDDC is more cost-effective for high-volume biocides, comprising 60% of dithiocarbamate wastewater uses.

Explore our technical guides or request a sample to integrate SDDC into your processes.

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