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Common name: Daidzein
Chemical formula: C15H10O4
Molecular weight: 254.24
Physical form: Off-white to light yellow crystalline powder
Origin: Typically sourced from soybeans and other legumes
Main health risks: Mild irritation to eyes, skin, and respiratory tract may appear when exposed to high volumes
Chronic exposure: No clear evidence of severe long-term toxicity in humans; existing animal studies do not point to carcinogenicity under common exposure levels in labs
Environmental risks: Limited evidence for persistence or bioaccumulation in aquatic systems; not highly hazardous to aquatic life at low concentrations
Fire hazard: Not classified as highly flammable, but fine dust from powders can form explosive mixtures with air
Main ingredient: Daidzein exceeds 98% in pure commercial forms
Impurities: Trace quantities of related isoflavones or plant-based residues; rarely more than 2% in standard extracts
Inhalation: Remove affected individuals to fresh air; persistent discomfort calls for medical advice
Eye contact: Rinse gently with water for several minutes, check for ongoing irritation
Skin contact: Wash with soap and water, remove contaminated clothing
Ingestion: Rinse mouth, drink water if conscious, medical attention if symptoms develop
Suitable extinguishing media: Dry chemical, carbon dioxide, foam
Unusual fire risks: Fine dust may combust with air under rare conditions
Recommended gear: Standard fire-fighting gear, dust mask, eyewear for protection from fumes or particulates
Combustion products: Carbon oxides may release in fires
Personal safety: Gloves, dust mask, eyewear help reduce inhalation and contact
Spill response: Sweep up without generating dust, use damp method or vacuum with HEPA filter
Waste containment: Store collected material in closed containers for disposal according to local regulations
Ventilation: Good airflow cuts down dust exposure
Handling: Limit dust production, use extraction fans, avoid touching face during handling, gloves prevent skin transfer
Storage: Keep in a cool, dry, tightly sealed container away from direct sunlight and moisture
Compatibility: Store away from strong acids, alkalis, or oxidizing agents
Engineering controls: Local exhaust, enclosed systems cut down airborne particles in workplace
Personal protection: Gloves, safety glasses, dust mask, lab coats serve best in settings where powder clouds form
Hygiene: Wash hands after handling, especially ahead of eating, drinking, or smoking
Appearance: Crystalline powder, off-white to pale yellow
Solubility: Poor in cold water, moderate in hot water, soluble in ethanol and DMSO
Melting point: Roughly 315–317°C
Odor: Odorless
Boiling point: Not practical since compound decomposes before boiling
pH: Neutral under standard solutions
Chemical stability: Stable under normal handling and storage
Decomposition: High heat may break down into carbon oxides
Incompatible with: Strong acids, oxidizing agents may promote unwanted reactions
Polymerization: No hazardous polymerization reported under standard use
Acute toxicity: Low acute toxicity in animals based on available oral and dermal studies
Chronic effects: Animal research highlights no strong cancer links; some rodent studies suggest estrogenic effects at very high doses, biology in humans needs further research
Sensitization: Skin/eye irritation rarely severe in clinical reporting
Carcinogenicity: No strong links to cancer in available data; not classed as carcinogenic by IARC or NTP
Other risks: Exceeding normal dietary exposures unlikely to trigger serious effects in healthy individuals
Aquatic toxicity: Not identified as acutely toxic to fish or aquatic organisms at environmental concentrations tied to agricultural runoff
Persistence: Most daidzein breaks down over weeks in soil and water, with some molecules binding to organic matter
Bioaccumulation: Not a significant concern given low water solubility and rapid microbial metabolism
Disposal method: Dispose of by licensed waste facility in line with local environmental health guidelines
Container cleaning: Rinsing with water and proper drying before discarding or recycling containers
Legislation: Check regional waste rules to avoid accidental release into environment, especially storm drains
UN status: Not regulated under typical international land, air, or sea transport codes
Labeling: Standard labeling does not require hazardous symbols for daidzein in pure or diluted states
Packing group: Avoid shipping near strong oxidizers or acids for extra precaution
Occupational limits: No dedicated OSHA, NIOSH, or EU workplace exposure benchmarks reported
Food and supplement: Daidzein naturally occurs in human diets through soy, present in regulated supplements
REACH/TSCA: Registration and compliance based on manufacturer/importer region; not on main hazardous substance lists as of the latest updates
State rules: Some US and EU jurisdictions encourage documentation for manufacturing and chemical handling but rarely treat daidzein as a major controlled substance
