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| CAS No.: | 28874-51-3 |
| Formula: | C5h6nnao3 |
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1. Basic Information
Chemical Name: Sodium L-Pyrrolidone-5-carboxylate
Common Name: Sodium PCA (PCA: Pyrrolidone Carboxylic Acid)
Synonyms: Sodium L-pyroglutamate; Sodium salt of L-proline derivative
CAS Registry Number: 28874-51-3
Molecular Weight: 151.10 g/mol
2. Structural Characteristics
It is the sodium salt of L-pyroglutamic acid (also known as 5-oxoproline).
This molecule is a cyclic derivative of the amino acid L-glutamic acid.
It exists as a highly hygroscopic, white crystalline powder.
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Specifications |
| Appearance,Suspended Matter | Pale yellowish transparent liquid |
| pH ( 10% water solution) | 6.8~7.4 |
| Transmittance (lcm, 430nm) | >96.0 |
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Specific gravity(D)
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1.260~1.270 |
| Content | 48.0%~52.0% |
| Nitrogen | 4.45%~4.82% |
| Total bacteria(CFU/g) | <100 |
| Mold and yeast(CFU/g) | ≤100 |
It is predominantly used in the cosmetic, personal care, and industries for its superior moisturizing properties.
Cosmetics & Skincare:Core Humectant: A key ingredient in moisturizers, lotions, creams, serums, and facial masks.
Hair Care: Used in shampoos and conditioners to improve hydration and manageability.
Anti-aging Products: Helps plump skin and reduce the appearance of fine lines by increasing hydration.
Used as an excipient (non-active ingredient) in topical formulations for its hydrating and soothing effects.
Biochemical Research: Used as a reagent in biochemical studies.
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