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Chemical Name: Genipin
Synonyms: Gardenia Blue precursor, Crosslinker for gelatin and collagen
Chemical Formula: C11H14O5
CAS Number: 6902-77-8
Physical Form: Crystalline powder, typically white to pale yellow
Odor: Slight, not considered pungent
Common Use: Research and industrial settings as a natural crosslinking agent, traditionally derived from Gardenia jasminoides fruit
Main Hazards: Eye irritation, skin irritation
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Health Effects: Direct contact can cause pigmentation of the skin. Prolonged exposure can trigger mild dermatitis or respiratory discomfort. Safety data warns against inhaling the dust.
Hazard Statements: Can cause irritation to eyes or mucous membranes. Unprotected exposure may stain skin blue or grey temporarily.
Pictogram Labels: Exclamation mark (for irritant effects).
Ingredient: Genipin
Concentration: Greater than 98% pure in research applications
Impurities: Trace water, natural plant byproducts from extraction sources
Inhalation: Move person to fresh air. Seek medical attention if irritation persists.
Skin Contact: Thorough wash with water and soap. Pigmentation may occur, but typically fades. Avoid scrubbing which may agitate sensitive skin.
Eye Contact: Rinse carefully with water. Remove contact lenses if present.
Ingestion: Rinse mouth, do not induce vomiting. Medical advice is recommended for significant or deliberate ingestion.
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, water spray
Combustion Products: Carbon monoxide, carbon dioxide, possibility of organic fumes
Fire Hazards: Dust may form explosive mixtures with air, though this is rare in typical laboratory settings
Protective Equipment for Firefighters: Use self-contained breathing apparatus and full protective gear
Personal Precautions: Avoid generating dust. Use appropriate gloves, mask or respirator, and protective glasses.
Environmental Precautions: Prevent large spills from entering water or sewage systems.
Cleanup Methods: Sweep up spilled material, then wipe area with slightly damp cloth. Dispose with common laboratory or industrial waste, observing standard protocols.
Safe Handling: Handle in well-ventilated areas. Reduce dust creation. Wear gloves and safety glasses each time you open a container.
Storage Conditions: Store in tightly sealed containers, away from direct sunlight, and in a dry, cool area. Avoid humid spaces since moisture accelerates genipin degradation.
Incompatibilities: Do not store near strong acids or oxidizing agents.
Engineering Controls: Use with local exhaust ventilation when handling large quantities, especially in powder form.
Personal Protection: Laboratory coat, nitrile or latex gloves, chemical splash goggles
Respiratory Protection: Dust mask or respirator in environments with high levels of airborne particulate.
Hygiene Measures: Wash hands and exposed skin before breaks and after handling.
Appearance: Crystalline solid, white or light yellow
Melting Point: 120–125°C reported in various chemical databases
Solubility: Slightly soluble in water, better in ethanol or DMSO
Odor Threshold: Not established
pH: Forms slightly acidic solutions
Boiling Point: Not relevant due to decomposition before boiling
Vapor Pressure: Not significant at room temperature
Relative Density: Close to 1.3 g/cm³
Stability: Stable under recommended storage conditions, sensitive to heat and light
Chemical Stability: Remains stable when kept out of direct light and away from moisture
Incompatible Materials: Strong oxidizers, strong acids
Hazardous Decomposition Products: Thermal breakdown generates fumes containing carbon oxides and specific organics
Conditions to Avoid: Prolonged exposure to air, light, elevated temperatures, and acids
Acute Toxicity: Low oral and dermal toxicity in animal studies
Local Effects: Noted for causing blue discoloration on skin, eye irritation on direct contact
Chronic Exposure: No definitive research in humans suggesting long-term health effects, but skin contact may trigger dermatitis in sensitive individuals
Carcinogenicity: Not classified as a known carcinogen by any major agency
Target Organ Effects: None documented at low-level exposures during research or production work
Aquatic Toxicity: No reports of major fish toxicity, but aquatic impact data limited
Persistence and Degradability: Moderately biodegradable, based on analogous natural compounds
Bioaccumulation: Not expected in environmental organisms
Mobility in Soil: Moderate, due to partial water solubility
Waste Treatment Methods: Dispose in accordance with national, regional, and local regulations for chemically contaminated wastes
Hazardous Waste Classification: Not designated as hazardous waste under most chemical management schemes
Recycling: Not typically feasible for single-use or research-scale numbers
UN Number: Not classified as dangerous for transportation by air, land, or sea
Shipping Precautions: Use tightly sealed containers. Avoid moisture and excessive shaking that can release dust into the shipping environment
Packing Group: Usually shipped as non-regulated material for research purposes
Global Inventories: Listed in several international chemical inventories such as EINECS and TSCA
Labelling Requirements: Standard laboratory chemical hazard labelling applies
Restrictions: No blanket restrictions in research, but food use varies by country
Worker Protection Rules: Follow institutional safety requirements, including PPE, when scaling up beyond benchtop R&D.
