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Halogen-free formulation compliant with RoHS and REACH regulations.
Excellent thermal stability for processing at elevated temperatures (up to 300 °C).
High flame retardancy achieving UL94 V-0 rating at 1.6 mm thickness.
Maintains mechanical integrity and dimensional stability in engineering thermoplastics.
Low smoke density and minimal toxic gas emission during combustion.
Electrical enclosures and housings for industrial control systems.
Connectors and terminal blocks in automotive electronic modules.
LED lighting components requiring high fire-safety performance.
Consumer electronics casings, including power adapters and charging stations.
Public transportation interior parts subject to stringent flame-spread standards.
| Chemical Type | Phosphorus-based organic flame retardant |
| Product Form | Free-flowing white powder |
| Appearance | White to off-white granular powder |
| Density | 1.35–1.42 g/cm³ (at 25 °C) |
| Decomposition Temperature | ≥280 °C (TGA onset, N₂ atmosphere) |
| Solubility | Insoluble in water; dispersible in common engineering plastics (e.g., PBT, PC/ABS) |
| Key Features | Halogen-free, UL94 V-0 certified, low migration, good compatibility |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
Q1: What types of engineering plastics is CR-733S compatible with?
A: CR-733S is specifically formulated for use in high-performance thermoplastics such as polyamide (PA6, PA66), polybutylene terephthalate (PBT), and polycarbonate (PC) blends—offering good dispersion and minimal impact on mechanical properties when properly compounded.
Q2: Does CR-733S affect the processing stability or color of the final compound?
A: CR-733S demonstrates excellent thermal stability during standard melt-processing conditions (e.g., extrusion and injection molding) and typically maintains low color impact, supporting light- to medium-toned engineering plastic applications without significant yellowing.
Q3: How does CR-733S achieve flame retardancy without halogen-based chemistry?
A: CR-733S is a phosphorus-based, non-halogenated flame retardant that functions primarily through condensed-phase mechanisms—promoting char formation and reducing flammable volatiles—supporting compliance with increasingly stringent environmental and safety requirements.
Q4: Is CR-733S suitable for applications requiring UL 94 V-0 rating?
A: Yes—when incorporated at appropriate loading levels and optimized within the polymer matrix, CR-733S enables formulations to achieve UL 94 V-0 classification in thin-wall sections (e.g., 0.8 mm and 1.6 mm), subject to full system validation under end-use conditions.
Q5: What handling precautions should be observed during compounding?
A: As with most fine-particle additives, proper dust control measures—including local exhaust ventilation and appropriate PPE—are recommended during dry blending and feeding to ensure operator safety and consistent dispersion.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
