# Chlorinated Paraffin (CPW) Manufacturer in India | NBT Tech

    

NBT Tech manufactures technical-grade Chlorinated Paraffin (CPW) across 40–71% chlorine grades with in-house QC testing. Multiple quality tiers and viscosity configurations for cables, footwear, coatings, rubber, and metalworking.

    
    
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      ## CPW Quality Tiers & Grades

      

        ### Diamond Grade (Premium Non-Phthalate) - 100% RoHS & REACH Compliant

        

**Chlorine:** 52 ± 1% | **Hazen:** Max 25 Hazen (Water-White Crystal Clear) | **Gravity:** 1100 to 1500 (Custom Blended)

        

**Use Cases:** Export cables, high-flex industrial hoses, protective gaskets, premium footwear

      

      

        ### Gold Grade (Standard 52% Benchmark) - High Plasticizing Efficiency

        

**Chlorine:** 52 ± 1% | **Hazen:** Max 50 Hazen (Water-White Clear) | **Gravity:** 1100 to 1500 (Series Available)

        

**Use Cases:** Building wiring, garden hoses, flexible PVC profile extrusions

      

      

        ### Silver Grade (Utility 40-42%) - Optimized Economics

        

**Chlorine:** 40 - 42% | **Hazen:** Max 100 Hazen (HNP Utility Base) | **Gravity:** 1100 to 1300

        

**Use Cases:** Utility footwear soles, low-tension cables, commercial rubber profiles

      

      

        ### Commercial Grade - Bulk Filler Plasticizer

        

**Chlorine:** 38 - 42% | **Hazen:** Max 150 Hazen (Commercial Utility Base) | **Gravity:** 1100 to 1250

        

**Use Cases:** Tarpaulin coating, recycled PVC products, heavy industrial paints

      

    
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      ## Technical Specifications

      

        
          | Parameter | 40-42% | 52% | 60-62% | 70% |
| --- | --- | --- | --- | --- |

        
        |  | Clear Viscous | Water-White | Translucent Viscous |  |
|  | 40 - 42% | 52 ± 1% | 60 - 62% |  |
|  | 1.10 - 1.15 | 1.25 - 1.30 | 1.35 - 1.45 |  |
|  | 3 - 8 | 12 - 17 | 30 - 50 |  |
|  | Max 30 | Max 25 | Max 60 |  |
|  | Max 0.2 | Max 0.1 | Max 0.1 |  |

        
      

    
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      ## Frequently Asked Questions

      

        ### **What is Chlorinated Paraffin (CPW) and how is it used?**

        

Chlorinated Paraffin (CPW) is a complex synthetic chemical manufactured using high-purity paraffin wax and chlorine gas. NBT CPW functions as an essential secondary plasticizer and flame retardant (FR). In PVC manufacturing, it lowers overall formulation costs by partially substituting expensive primary plasticizers (like DOP or DINP) while significantly enhancing the compound's flame resistance (LOI > 28%), chemical resistance, and tensile strength.

      

      

        ### **What is the difference between Specific Gravity and Chlorine Percentage?**

        

Chlorine percentage determines the flame retardancy and basic chemical structure of the CPW, while Specific Gravity (measured between 1100 and 1500) represents the density. At NBT, you can purchase any quality tier (Diamond, Gold, etc.) at any specific gravity configuration. Viscosity and Specific Gravity parameters can be custom-calibrated and blended to match your exact processing requirements.

      

      

        ### **How do I choose the correct CPW grade for my compounding application?**

        

Grade selection depends on your final product's quality specifications, extrusion temperatures, and regulatory needs. Diamond Grade (Non-Phthalate, 1100-1500 gravity) is required for strict RoHS/REACH export compliance. Gold Grade (Standard 52% chlorine, 1100-1500 gravity) is the standard for flexible PVC pipes, electrical sheathing, and footwear soles. For rubber conveyor belts, high-chlorine/high-viscosity (Grade 1500) variants are preferred for optimal flame-retardant loading.

      

      

        ### **How does NBT guarantee batch consistency and thermal stability?**

        

We verify every batch at our in-house quality control laboratory in Delhi. Using advanced testing methods, we audit heat stability at 180°C for 30 minutes, color index (Max 25 Hazen water-white clarity), and viscosity levels. NBT only releases batches that pass strict visual color limits (Crystal Clear / Water-White) and specific gravity consistency, preventing plasticizer extraction, polymer pinking, or extruder burning in your manufacturing process.

      

      

        ### **Do you supply bulk orders and provide logistics support across India?**

        

Yes. CPW is a core manufactured and stocked product for NBT, and bulk supply can be coordinated across India. The offered grade, quantity, packaging, dispatch timing and transport mode are confirmed for the specific order.

      

    
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