CAS 232938-43-1 | Pergafast 201 Non-Phenolic Developer | China Manufacturer
Product Name: Pergafast 201 (Non-Phenolic Color Developer)
Synonym: N-(4-Methylphenylsulfonyl)-N'-[3-(4-methylphenylsulfonyloxy)phenyl]urea
CAS Number: 232938-43-1
Molecular Formula: C21H20N2O6S2
Molecular Weight: 460.52 g/mol
Purity: ≥ 99%
Melting Point: 160 – 162 °C
Appearance: White to off-white solid
BPA-Free: Yes, non-phenolic structure
Packaging: 5kg / 10kg / 25kg / 50kg (custom available)
Lead Time: 3–7 business days from stock
Made in China | COA & SDS provided with every shipment
- Worldwide Delivery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
CAS 232938-43-1 | Pergafast 201 | Non-Phenolic Color Developer for Thermal Paper | China Manufacturer
Product Overview
As a China-based manufacturer, Alfa Chemical supplies Pergafast 201 (CAS 232938-43-1), a non-phenolic color developer for thermal paper. It was developed as an alternative to BPA and other phenolic developers, which are increasingly restricted due to health and environmental concerns. Pergafast 201 is a BPA-free, non-phenolic compound that provides clear, stable thermal print images.
The product is a white to off-white solid with purity ≥ 99% and a sharp melting point of 160–162 °C. Its chemical structure is a sulfonylurea derivative, which gives it good thermal reactivity and compatibility with common thermal paper coating formulations. It is soluble in DMSO and methanol (slightly, with heat) and stable under normal storage conditions.
For thermal paper manufacturers looking to transition to BPA-free formulations, Pergafast 201 offers a proven drop-in alternative with similar or better performance. For related thermal paper chemicals and color developers, explore our Material Science range.
Industrial Applications
Pergafast 201 is used as a color developer in thermal paper coatings. The four application areas below cover the main uses of CAS 232938-43-1.
Challenge: Thermal paper manufacturers need to replace BPA and other phenolic developers without losing print quality or thermal sensitivity.
Solution: Pergafast 201, a non-phenolic developer with sharp melting point and high purity.
Result: Clear, dark print images with good image stability. BPA-free formulation suitable for receipts, labels, and tickets.
Request technical data →Challenge: High-speed thermal printers require developers with fast reaction kinetics and consistent particle size.
Solution: Pergafast 201 with narrow melting range and good dispersion properties.
Result: Sharp print at high speeds, suitable for logistics labels, barcode labels, and retail tags.
Request a quote →Used in point-of-sale receipts, event tickets, and parking tickets. Non-phenolic formulation addresses regulatory and consumer concerns about BPA in thermal paper.
Request a sample →Pergafast 201 is non-phenolic and BPA-free, making it a candidate for food-contact thermal paper applications. Regulatory compliance depends on final formulation and local requirements. Please verify suitability for your specific application.
Discuss regulatory needs →Technical Specifications
Specifications for Pergafast 201 (CAS 232938-43-1) are listed below. For batch-specific COA or SDS, please contact us.
| Item | Specification |
|---|---|
| Product Name | Pergafast 201 (Non-Phenolic Color Developer) |
| Synonym | N-(4-Methylphenylsulfonyl)-N'-[3-(4-methylphenylsulfonyloxy)phenyl]urea |
| CAS Number | 232938-43-1 |
| Molecular Formula | C21H20N2O6S2 |
| Molecular Weight | 460.52 g/mol |
| Appearance | White to off-white solid |
| Purity | ≥ 99% |
| Melting Point | 160 – 162 °C |
| Density | 1.407 ± 0.06 g/cm³ |
| PSA | 135.40 |
| LogP | 6.21 |
| Solubility | DMSO (slightly), Methanol (slightly, heated) |
| Refractive Index | 1.633 |
| Stability | Unstable in aqueous solution |
| Storage Condition | Store at room temperature |
| Packaging Options | 5kg / 10kg / 25kg / 50kg, custom available |
| Documents | COA (purity, melting point), SDS |
Test methods: purity by HPLC; melting point by DSC. Full analytical data available in batch-specific COA.
Quality Documentation
Batch-specific Certificate of Analysis for purity and melting point.
Safety Data Sheet for safe handling, storage, and transport documentation.
Discuss formulation compatibility, BPA-free transition, or custom requirements.
Manufacturing & Quality Control
Pergafast 201 is produced via a multi-step organic synthesis process under controlled conditions. Each batch is tested for purity and melting point before release. The facility is ISO 9001 certified, and each batch is assigned a traceable lot number.
A Certificate of Analysis (COA) and Safety Data Sheet (SDS) ship with every order. Batch records are traceable. Learn more about our facilities →
Packaging & Shipping
Stock items ship in 3–7 business days. Samples go by international express; bulk orders by air or sea freight. COA and SDS ship with every order.
5kg / 10kg / 25kg / 50kg. Sealed, moisture-proof inner packaging. Carton or drum outer packaging. Custom quantities available.
International express for samples; air or sea freight for bulk orders. Stock items ship in 3–7 business days.
COA, SDS, commercial invoice, and packing list. HS code provided on request.
Store at room temperature in a dry, well-ventilated area. Keep container tightly closed.
For special packaging or urgent requests, please contact our team directly.
Why Choose Alfa Chemical
Thermal paper manufacturers need a reliable, BPA-free color developer with consistent quality and regulatory support. Here is what Alfa Chemical provides for Pergafast 201.
Pergafast 201 is a non-phenolic developer, free of BPA and other phenolic compounds. Supports transition to safer thermal paper formulations.
Each batch is tested for purity and melting point. COA is batch-specific and traceable.
Technical support for BPA-free transition, coating compatibility, and thermal sensitivity optimization.
5kg R&D samples, 25kg pilot quantities, and 50kg bulk orders. Stock items ship in 3–7 business days.
Frequently Asked Questions
It is used as a non-phenolic color developer in thermal paper coatings for receipts, labels, tickets, and other thermal printing applications.
Yes. Pergafast 201 is a non-phenolic compound and does not contain BPA. It is designed as an alternative to BPA and other phenolic developers.
Purity is ≥ 99% by HPLC. Melting point is 160–162 °C. Batch-specific COA is available.
Yes, COA with purity and melting point data, and SDS are provided with every shipment.
Store at room temperature in a dry, well-ventilated area. Keep container tightly closed. Avoid contact with water or moisture.
The smallest standard pack is 5kg. Custom quantities are available. Contact us for your specific requirement.
Pergafast 201 is non-phenolic and BPA-free, making it a candidate for food-contact applications. Regulatory compliance depends on final formulation and local requirements. Please verify suitability for your specific application.
Yes. We can discuss custom synthesis of related developers and bulk supply. Please share your target specification when inquiring.
Need a quote or sample for CAS 232938-43-1? We reply within 12 hours. COA and SDS ship with every order.
Get a Quote Request SampleRelated products & resources:
Alfa Chemical Co., Ltd is a China-based manufacturer of specialty chemicals and thermal paper chemicals, based in Zhengzhou, China. We supply Pergafast 201 (CAS 232938-43-1) and related color developers to thermal paper manufacturers worldwide.
* All product specifications are for reference purposes. Users should conduct their own suitability tests under actual conditions. This product is for industrial use only. Not for pharmaceutical, food, or cosmetic applications without specific regulatory compliance testing. Pergafast is a registered trademark of BASF. Alfa Chemical is not affiliated with BASF. Last updated: September 24, 2026.
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