Description

Kojic Acid Sodium Salt Hydrate is the water-soluble sodium derivative of kojic acid, a natural metabolite produced by several species of fungi. This compound is valued for its potent tyrosinase-inhibiting properties, making it a highly effective agent for controlling enzymatic browning and melanin synthesis. It is primarily sought after by manufacturers in the cosmetics, personal care, and food preservation industries for formulating skin-lightening products and as an antioxidant stabilizer.

Application

• Cosmetic & Skincare Formulations: A key active ingredient in skin-lightening creams, serums, and lotions to reduce hyperpigmentation, age spots, and melasma.
• Personal Care Products: Used in soaps, body washes, and deodorants for its antibacterial and skin-brightening benefits.
• Food & Beverage Industry: Acts as a preservative and antioxidant to prevent enzymatic browning in fruits, vegetables, and seafood.
• Agricultural Applications: Employed in post-harvest treatments to maintain the color and freshness of produce.
• Biochemical Research: Serves as a standard or inhibitor in enzymatic studies related to tyrosinase activity and melanogenesis.
• Pharmaceutical Intermediates: Utilized in the synthesis of other compounds with therapeutic potential.

Basic Information

Product Name	Kojic Acid Sodium Salt Hydrate
CAS No.	123531-57-7
Molecular Formula	C6H7NaO5·xH2O
Molecular Weight	182.11 g/mol (Anhydrous basis)
Synonyms	Sodium Kojate; Kojic Acid Sodium Salt; Sodium 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one; 5-Hydroxy-2-(hydroxymethyl)-4-oxo-4H-pyran-3-olate Sodium Salt; Kojic acid monosodium salt; Kojate Na
EINECS	Contact for details

Quality Control

Our Kojic Acid Sodium Salt Hydrate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets stringent specifications for cosmetic and food-grade applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect stability and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
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 cosmetic/food grade requirements

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