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Kojic Acid
Kojic Acid is a naturally derived organic compound produced by certain species of fungi, commonly Aspergillus and Penicillium. It appears as a white to light yellow crystalline powder with a slightly acidic taste and is highly soluble in water and alcohol. Kojic Acid is primarily used in the cosmetic and pharmaceutical industries for its skin-lightening and antioxidant properties. It inhibits melanin production by blocking the enzyme tyrosinase, making it a key ingredient in formulations aimed at reducing hyperpigmentation, age spots, and uneven skin tone.
Kojic Acid
Primary Uses
- Cosmetic and Personal Care
- Skin Lightening Agent: Incorporated in creams, lotions, serums, and soaps to reduce melanin synthesis and lighten dark spots, freckles, and pigmentation disorders.
- Anti-Aging: Acts as an antioxidant to combat free radicals, protecting the skin from oxidative damage and premature aging.
- Hyperpigmentation Treatment: Used in formulations targeting melasma, sun spots, and other pigment-related skin conditions.
- Pharmaceutical Industry
- Topical Preparations: Included in medicated creams and gels for skin depigmentation therapies under dermatological supervision.
- Food Industry
- Food Additive: Occasionally used as a natural preservative or antioxidant in food products to prevent discoloration and spoilage.
Secondary Uses
- Industrial Applications
- Used in certain biochemical assays and research as an inhibitor of tyrosinase enzyme for studying melanin synthesis pathways.
- Agriculture
- Investigated as a potential natural fungicide due to its antimicrobial properties against some plant pathogens.
- Cosmetic Raw Material
- Used as a precursor or intermediate in the synthesis of other skin-related active ingredients.
1. Basic Identification Attributes
- Chemical Name (IUPAC): 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one
- Common/Trade Name: Kojic Acid
- CAS Number: 501-30-4
- HS Code: 2932.99.90
- Synonyms: 5-Hydroxy-2-(hydroxymethyl)-4-pyrone; Kojic acid powder; Kojic acid monohydrate
2. Physical & Chemical Properties
- Physical State: Crystalline powder
- Color & Odor: White to light yellow; odorless or faintly musty
- Melting Point: 152–154 °C
- Solubility: Soluble in water, ethanol, and propylene glycol; slightly soluble in ether
- pH: Slightly acidic in aqueous solution
3. Safety & Hazard Attributes
- GHS Classification: Not classified as hazardous under normal handling
- Toxicity: Low toxicity; may cause skin sensitization in sensitive individuals
- Exposure Limits: No specific occupational exposure limits established
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, and well-ventilated area away from direct sunlight and moisture
- Container Type: Sealed plastic or glass containers with airtight lids
- Shelf Life: Typically 2–3 years if stored properly
- Handling Precautions: Avoid inhalation of dust and prolonged skin contact
5. Regulatory & Compliance Attributes
- Approved for use in cosmetics by regulatory bodies such as FDA and EU Cosmetic Regulation (with concentration limits)
- Complies with relevant food safety regulations when used as a food additive
- Labeling must indicate possible skin sensitization risk where applicable
6. Environmental & Health Impact
- Biodegradability: Biodegradable under aerobic conditions
- Ecotoxicity: Low toxicity to aquatic organisms at typical use concentrations
- Bioaccumulation: Not expected to bioaccumulate
- Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
Safety Handling Precautions
- PPE Required: Use gloves and dust mask when handling powder to avoid inhalation and skin exposure
- Handling Guidelines: Use in well-ventilated areas and avoid creating dust clouds
- Storage Measures: Keep container tightly closed and protect from moisture
First Aid Measures
- Inhalation: Move to fresh air; if irritation occurs, seek medical attention
- Skin Contact: Wash thoroughly with soap and water; discontinue use if irritation or rash develops
- Eye Contact: Rinse eyes with water for at least 15 minutes; seek medical advice if irritation persists
- Ingestion: Rinse mouth; seek medical attention if discomfort or adverse effects occur
Firefighting Measures
- Fire Hazards: Non-flammable under normal conditions
- Extinguishing Media: Use water spray, foam, or dry chemical extinguishers for surrounding fires
- Special Precautions: Avoid inhaling smoke or combustion products
- Hazardous Combustion Products: May produce carbon oxides and other irritant fumes upon burning
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