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β-Estradiol Structure

β-Estradiol

Chemical Properties

Melting point 178-179 °C(lit.)
alpha  D25 +76 to +83° (dioxane)
Boiling point 355.44°C (rough estimate)
Density  1.0708 (rough estimate)
refractive index  80.4 ° (C=1, Dioxane)
Flash point 2℃
storage temp.  room temp
solubility  Practically insoluble in water, soluble in acetone, sparingly soluble in ethanol (96 per cent), slightly soluble in methylene chloride.
pka pKa 10.71±0.02(H2O(0.1% p-dioxane) t=25±0.1 I=0.03(KCl))(Approximate)
form  powder
color  White to off-white
Water Solubility  Soluble in dimethyl sulfoxide, ethanol , water, phosphate buffer saline, dimethyl formamide, acetone, dioxane and alkali hydroxides. Slightly soluble in vegetable oils.
Merck  14,3703
BRN  1914275
BCS Class 1
Stability Stable. Incompatible with strong oxidizing agents.
InChIKey VOXZDWNPVJITMN-ZBRFXRBCSA-N
CAS DataBase Reference 50-28-2(CAS DataBase Reference)
EWG's Food Scores 3-6
NCI Dictionary of Cancer Terms estradiol
FDA UNII 4TI98Z838E
NCI Drug Dictionary ESTRING
ATC code G03CA03,G03CA53
NIST Chemistry Reference Estra-1,3,5(10)-triene-3,17beta-diol(50-28-2)
EPA Substance Registry System Estradiol (50-28-2)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H351-H360FD-H362-H410
Precautionary statements P202-P260-P263-P264-P273-P308+P313
Hazard Codes  T,Xn,F
Risk Statements  60-61-45-63-64-40-36-20/21/22-11-48
Safety Statements  53-22-36/37/39-45-36/37-26-16-36-20
RIDADR  2811
WGK Germany  3
RTECS  KG2975000
8-10
HazardClass  6.1
PackingGroup  III
HS Code  29372390
Hazardous Substances Data 50-28-2(Hazardous Substances Data)
Toxicity LD50 subcutaneous in rat: > 300mg/kg
NFPA 704:
1
2 0

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