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Zinc Dimethyl Dithiocarbamate, ZDMC, ​​​​​​​ZDMC-80, ZDMC80, Accelerator ZDMC, PZ-80, Rubber Accelerant ZDMC, Rubber Vulcanization Accelerant, 137-30-4

Zinc Dimethyl Dithiocarbamate, ZDMC, ZDMC-80, ZDMC80, Accelerator ZDMC, PZ-80, Rubber Accelerant ZDMC, Rubber Vulcanization Accelerant, 137-30-4

🧪 ZDMC (Zinc Dimethyldithiocarbamate)

CAS No: 137-30-4 Chemical Formula: C₆H₁₂N₂S₄Zn Appearance: White to creamy powder or granules Packaging Type: Typically 25 kg bags or PD masterbatch form

⚙️ Technical Specifications

Property Value / Description
Active Content (%) ~80 (in masterbatch form)
Melting Point > 180 °C
Nitrosamine Risk Low
Dispersion High (in PD form)
Toxicity Low

🏭 Application Areas

Sector Description
Latex Products Enables fast curing at low temperatures in gloves, catheters, balloons.
Natural Rubber Used as a secondary accelerator for rapid vulcanization.
Synthetic Rubber Plays a supporting role in SBR, NBR systems.
Agrochemicals Used in certain fungicide formulations.
Adhesives Applied in specialized "Medicine Glue" formulations.

Advantages

  • 🌡️ Effective at low temperatures: Ideal for latex systems requiring fast curing.

  • 🧼 Clean formulation: Nitrosamine-free, preferred in medical-grade products.

  • 🧪 High dispersion: PD form ensures homogeneous mixing.

  • 📉 High efficiency at low dosage: Works well as a secondary accelerator.

⚠️ Precautions

  • May degrade at high temperatures — process temperature must be controlled.

  • Can react with metal ions — stability testing in formulations is recommended.

🧩 ZDMC vs TBBS Sectoral Suitability Table

🏭 Sector ✅ ZDMC Suitability ✅ TBBS Suitability 📌 Notes
🔘 Natural Rubber ✅ High ✅ Medium ZDMC acts fast at low temp; TBBS offers delayed vulcanization.
🧪 Synthetic Rubber (SBR, NBR) ✅ Medium ✅ High TBBS performs strongly in SBR/NBR systems.
🧼 Latex Systems ✅ High ❌ Not suitable ZDMC preferred for low nitrosamine risk.
🚗 Automotive Tires ❌ Low ✅ High TBBS provides superior mechanical strength.
🧴 Medical Products ✅ High ❌ Not suitable ZDMC ideal for low toxicity and fast curing.
🧱 General Industrial Rubber ✅ Medium ✅ High Both usable depending on formulation.
🌾 Agrochemicals ✅ (as fungicide) ZDMC used in some pesticide blends.
🧯 Fire Hose, Gaskets etc. ✅ Medium ✅ High TBBS preferred for durability; ZDMC as secondary accelerator.

🔒 Mandatory Use Cases for ZDMC

Justification Type Description
🧼 Nitrosamine Risk ZDMC is nitrosamine-free, making it mandatory in medical and food-contact rubber.
🌡️ Low-Temperature Curing Essential in latex systems requiring fast vulcanization at low temperatures.
🧪 High Dispersion (PD Form) PD form ensures process stability and is standardized in some production lines.
📜 Regulatory Compliance EU and FDA regulations mandate nitrosamine-free accelerators in specific applications.
🧯 Medical & Hygiene Products Required by certification and customer specs in sensitive applications.
🧴 Medicine Glue Formulations The only suitable accelerator in certain adhesive systems — no alternatives.

⚠️ Limitations of Alternatives

ZDEC, ZDBC, ZMBT may be used in some systems, but:

  • Curing speed is lower

  • Nitrosamine risk is higher

  • Dispersion and process compatibility are limited

🧩 Sectoral Suitability Matrix

(✅: Suitable, ⚠️: Limited, ❌: Not Suitable)

Application Area / Product → ZDEC ZDBC ZMBT TBBS
🔘 Natural Rubber
🧪 Synthetic Rubber (SBR, NBR, EPDM)
🧼 Latex Systems ⚠️
🚗 Automotive Tires ⚠️
🧴 Medical Products ⚠️
🧯 Technical Rubber (Gaskets, Hoses) ⚠️
🌾 Agrochemicals ⚠️ ⚠️

📌 Technical Notes Summary

  • ZDEC: Ultra-fast curing, ideal for low-temp systems. Low nitrosamine risk.

  • ZDBC: Good aging resistance, slower curing.

  • ZMBT: Broad curing range, versatile in technical rubber.

  • TBBS: Delayed vulcanization, high mechanical strength — essential in automotive.

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