CAS: 28874-51-3
Molecular Formula: C5H6NNaO3
Molecular Weight: 151.10
EINECS: 249-277-1
HS Code: /
Synonyms: Sodium PCA; L-PCA-Na; Sodium L-pyrrolidone carboxylate; 5-Oxo-L-proline monosodium salt; Sodium 2-pyrrolidone-5-carboxylate
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CAS: 28874-51-3
Molecular Formula: C5H6NNaO3
Molecular Weight: 151.10
EINECS: 249-277-1
HS Code: /
Synonyms: Sodium PCA; L-PCA-Na; Sodium L-pyrrolidone carboxylate; 5-Oxo-L-proline monosodium salt; Sodium 2-pyrrolidone-5-carboxylate
Sodium L-pyroglutamate (Sodium PCA / L-PCA-Na) CAS 28874-51-3 is an amino acid-derived moisturizing agent and a key component of the skin’s Natural Moisturizing Factor (NMF). It is widely used in cosmetics, personal care, and household products as a high-performance humectant, skin conditioner, and antistatic agent.
| Item | Value |
| Appearance | Clear colorless to pale yellow oil |
| Melting Point | 125 °C |
| Boiling Point | 313.7 °C (at 101325 Pa) |
| Density | 1.45 g/cm³ |
| pKa | 9.94 at 20 °C |
| Storage Condition | Refrigerated, sealed, dry |
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Our R&D laboratory, staffed by experienced chemists and engineers, drives continuous innovation— developing high-performance chemical solutions tailored to diverse industries. From raw material analysis to final product inspection, we maintain full traceability and consistency.

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At Mikem, our advanced factory and laboratory form the foundation of our chemical production excellence. Equipped with modern manufacturing lines and precision testing instruments, we ensure every product meets strict international standards for quality, safety, and performance.
Our R&D laboratory, staffed by experienced chemists and engineers, drives continuous innovation— developing high-performance chemical solutions tailored to diverse industries. From raw material analysis to final product inspection, we maintain full traceability and consistency.
