Cetylpyridinium Chloride (CPC) | CAS 123-03-5 | Phase Transfer Catalyst & Surfactant | China Manufacturer
Product Name: Cetylpyridinium Chloride (CPC)
Synonym: CPC, Cetylpyridinium Chloride Monohydrate, Hexadecylpyridinium Chloride
CAS Number: 123-03-5
Molecular Formula: C₂₁H₃₈ClN
Molecular Weight: 339.99 g/mol
Purity: ≥ 99%
Appearance: White to pearl powder
Melting Point: 80-86°C
Packaging: 500g / 1000g / 25kg (custom packaging available)
Lead Time: 3-7 business days from stock
Applications: Surfactant, biocide, antiseptic formulations, industrial applications
Free Sample: Available upon request for R&D evaluation
Worldwide Delivery: DHL / FedEx / air / sea
Made in China | COA & SDS provided with every shipment
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Product Introduction
CAS 123-03-5 | Cetylpyridinium Chloride (CPC) | Phase Transfer Catalyst & Surfactant from a China-Based Manufacturer
✅ Response within 12 hours · 📄 COA & SDS with every shipment
For R&D and industrial synthesis use only. Not for food, pharmaceutical, or cosmetic applications without specific regulatory compliance testing.
Product Overview: Cetylpyridinium Chloride (CPC, CAS 123-03-5)
Cetylpyridinium Chloride is a quaternary ammonium salt with a sixteen-carbon alkyl chain. In industrial chemistry, its value lies in three functions: a phase transfer catalyst that carries anions across phase boundaries, a cationic surfactant that stabilizes formulations, and a precursor for other ammonium compounds.
Alfa Chemical produces CPC (CAS 123-03-5) at our facility in Zhengzhou, China. We supply research groups and production plants worldwide, from 500g R&D samples to 25kg drums. Every batch ships with a COA and SDS.
Industrial Applications of Cetylpyridinium Chloride (CAS 123-03-5)
Four application areas where CPC is specified for its phase transfer, surface activity, or intermediate role.
In nucleophilic substitution and oxidation reactions, CPC transfers the anion into the organic phase. Typical loading starts at 2–5 mol%. Reaction time shortens, and catalyst cost stays below more specialized transfer agents.Read our phase transfer catalysis application guide →
Request a sample →Cetylpyridinium Chloride maintains cationic surface activity from pH 4 to 10 and remains stable up to 80°C. That range covers cleaning, emulsifying, and wetting applications in industrial formulations.
Get formulation advice →At ≥99% purity, CPC serves as a starting material for other quaternary ammonium compounds. Heavy metals are controlled to Pb ≤ 0.002%, and each COA reports the actual batch value.
Request technical data →Used as a cationic surfactant in industrial cleaning, emulsifying, and wetting formulations. Stable across pH 4–10 and up to 80°C. Consistent supply from 500g to ton-scale.
Request a quote →Technical Specifications: Cetylpyridinium Chloride (CPC)
The table below lists identity, quality, and safety parameters for our standard CPC grade. Custom specifications are available on request.
| Item | Specification |
|---|---|
| CAS Number | 123-03-5 |
| Molecular Formula | C₂₁H₃₈ClN |
| Molecular Weight | 339.99 g/mol |
| EINECS Number | 204-593-9 |
| Assay (on dried basis) | ≥ 99.0% |
| Appearance | White to pearl powder |
| Melting Point | 80 – 86 °C |
| pH (1% aqueous solution) | 5.0 – 7.0 |
| Loss on Drying | ≤ 0.5% |
| Residue on Ignition | ≤ 0.1% |
| Heavy Metals (as Pb) | ≤ 0.002% |
| Arsenic (As) | ≤ 0.0003% |
| Chloride Content | 10.2 – 10.8% |
| Bulk Density | 0.3 – 0.5 g/cm³ |
| Critical Micelle Concentration (CMC) | ~0.9 mM (25°C) * |
| Particle Size | D50 20–50 μm (custom available) * |
| Solubility | Water, ethanol, chloroform |
| Storage | Cool, dry, well-ventilated |
| Shelf Life | 24 months (sealed) |
| Packaging | 500g / 1000g / 25kg, custom |
* CMC and particle size data are for reference. Please confirm with our technical team for your specific batch requirements.
Quality Documentation for Cetylpyridinium Chloride Orders
Manufacturing and Quality Control: CPC Production in Zhengzhou, China
Our CPC line runs under documented SOPs, with in-house testing by HPLC, GC, and Karl Fischer titration for assay, melting point, appearance, pH, loss on drying, and heavy metals. We retain samples from every batch for two years, so a question raised months after delivery can be traced back to its production record.
The facility is ISO 9001 certified and has produced quaternary ammonium compounds for more than a decade. More on our manufacturing →
Packaging, Shipping, and Lead Time
Standard packaging and shipping terms for CPC orders. Custom options are available for bulk and OEM requirements.
500g / 1000g / 25kg drums, custom options on request.
Express courier for samples; air or sea freight for bulk orders.
3–7 business days from stock; 7–15 business days for bulk orders.
COA and SDS provided with every shipment. Not classified as dangerous goods.
For special packaging or urgent timelines, contact our team.
Why Choose Alfa Chemical as Your CPC Supplier
Focused on quaternary ammonium compounds and organic synthesis.
Batch-traceable COA covering assay, melting point, pH, and heavy metals.
500g for R&D, ton-scale for production - same specification.
Direct from Zhengzhou, China. No trading layer. Competitive pricing with full COA/SDS.
Browse more organic chemistry products or send us a custom request.
Frequently Asked Questions: Cetylpyridinium Chloride (CAS 123-03-5)
≥ 99%, verified by HPLC. The COA reports the actual batch value.
500g, 1000g, and 25kg drums. Custom packaging on request.
Cool, dry, sealed containers. Shelf life is 24 months.
Yes, with every shipment. Batch-specific documents on request.
Yes. Typical loading is 2–5 mol% for substitution, oxidation, and reduction reactions.
500g for R&D, 25kg for production. Contact us for bulk.
3–7 business days from stock. Bulk orders: 7–15 business days.
Yes, 500g samples are available. Buyer covers shipping.
Yes. We can adjust purity, particle size, and packaging to match your formulation. Contact us with your target spec.
24 months when stored sealed in a cool, dry place. Once opened, keep the container closed and use within 6 months.
Related products & resources:
Alfa Chemical Co., Ltd is based in Zhengzhou, China. All product specifications are for reference only. Users should conduct their own suitability tests under actual conditions. Products are for industrial manufacturing and R&D use only. Pharmaceutical intermediates are for R&D and industrial synthesis only. Not for food, pharmaceutical, or cosmetic applications without specific regulatory compliance testing. Last updated: 2026-09-20.
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