Description

Kojic Acid Sodium Salt Hydrate is the water-soluble sodium salt derivative of kojic acid, a natural metabolite produced by several species of fungi. This enhanced solubility makes it a highly effective and versatile ingredient for formulations requiring superior bioavailability and stability in aqueous systems. It is primarily sought after by manufacturers in the cosmetic, pharmaceutical, and food industries for its potent tyrosinase-inhibiting and antioxidant properties.

Application

• Cosmetic & Skincare Formulations: As a key active ingredient in skin-lightening creams, serums, and lotions to inhibit melanin production and address hyperpigmentation, age spots, and uneven skin tone.
• Pharmaceutical Preparations: Used in topical pharmaceutical products designed for treating melasma and other skin discoloration disorders.
• Food Preservation & Additive: Acts as an antioxidant and antimicrobial agent to prevent browning and extend the shelf life of fruits, seafood, and other perishable goods.
• Research & Development: Serves as a biochemical reagent in enzymatic studies, particularly those involving tyrosinase activity and melanogenesis pathways.
• Hair Care Products: Incorporated into shampoos and conditioners to help reduce oxidative stress on the scalp and hair.
• Industrial Applications: Potential use as a chelating agent and intermediate in specialty chemical synthesis.

Basic Information

Product Name	Kojic Acid Sodium Salt Hydrate
CAS No.	70145-54-9
Molecular Formula	C6H7NaO5·xH2O
Molecular Weight	190.11 (Anhydrous basis)
Synonyms	Sodium Kojate; Kojic Acid Sodium Salt; Sodium 5-Hydroxy-2-(hydroxymethyl)-4-oxo-4H-pyran-3-olate; Kojic acid, sodium salt, hydrate; 5-Hydroxy-2-(hydroxymethyl)-4-oxo-4H-pyran-3-ol sodium salt
EINECS	Contact for details

Quality Control

Our Kojic Acid Sodium Salt Hydrate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for cosmetic and food-grade applications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent caking and degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
pH (5% Solution)	6.0 - 8.0
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%
Microbiological Analysis	Meets standard limits

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.