Eosin B, pure, certified

Supplier: THERMO FISHER SCIENTIFIC CHEMICALS
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40942-1000 40942-0250
TS40942-1000EA 116 USD
TS40942-1000 TS40942-0250
Eosin B, pure, certified
Eosin B
Formula: C₂₀H₆Br₂N₂Na₂O₉
MW: 624.06 g/mol
Melting Pt: >310 °C (dec.)
Storage Temperature: Ambient
MDL Number: MFCD00005041
CAS Number: 548-24-3
EINECS: 208-943-1
Merck Index: 12,03638

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Specification Test Results

Appearance Dark brown to dark red-purple Crystalline powder
Infrared spectrum Conforms
Dye content ≥85 %
UV Lambda max 511 to 520 nm (in water + 1% Na2CO3)
Absorption Ratio P-15/P+15 0.96 to 1.22
BSC Certification Passes

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