Product Identification
【Product Name】(S)-3,4-Dihydro-3-(4-hydroxyphenyl)-2H-1-benzopyran-7-ol
【Synonyms】Equol  雌马酚
【CAS】531-95-3
【Formula】C15H14O3
【Molecular Weight】242.27
【EINECS】208-522-2
【Merck】12,3677

Physical and Chemical Properties
【Appearance】White to off-white to light yellow crystalline powder.
【Solubility in water】Insoluble
【Melting Point】189~190.5℃
【Boiling Point】442℃
【Vapor Pressure】2.1E-8 (25℃)
【Density】1.286 g/cm3 (20℃)
【pKa/pKb】9.67 (pKa)
【Partition Coefficient】2.98
【Heat Of Vaporization】72.6 kJ/mol
【Usage】May have beneficial effects on the incidence of prostate cancer.

First Aid Measures
【Ingestion】If swallowed, wash out mouth with copious amounts of water; call a physician.
【Inhalation】If inhaled, remove to fresh air; if breathing is difficult, give oxygen; if breathing stops, give artificial respiration.
【Skin】Flush with copious amounts of water; remove contaminated clothing and shoes; call a physician.
【Eyes】Flush with copious amounts of water; assure adequate flushing by separating the eyelids with fingers; call a physician.

Handling and Storage
【Storage】Store at -20 C.

Exposure Controls/Personal Protection
【Personal Protection】Wear self-contained breathing apparatus, protective clothing and heavy rubber gloves. Chemical safety ggles.
【Respirators】NIOSH/MSHA-approved respirato
【Exposure Effects】May be an irritant; may cause irritation to eyes, skin, mucous membranes.

Fire Fighting Measures
【Flash Point】221℃
【Fire Fighting】Suitable extinguishing agents: water spray, carbon dioxide, dry chemical powder or foam. Protective equipment: Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Accidental Release Measures
【Small spills/leaks】Absorb solutions with finely-powdered liquid-binding material (diatomite, universal binders); decontaminate surfaces and equipment by scrubbing with alcohol.

Stability and Reactivity
【Incompatibilities】Acids and bases.
【Stability】Sensitive to light and heat.
【Decomposition】Oxides of carbon.
【Combustion Products】May emit toxic fumes under fire condition.