Arsenazo III for calcium determination, Sigma-Aldrich®

Leverantör: SIGMA-ALDRICH MICROSCOPY
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Synonyms: 2,2′-(1,8-Dihydroxy-3,6-disulphonaphthylene-2,7-bisazo)bisbenzenearsonic acid, 2,7-Bis(2-arsonophenylazo)chromotropic acid

M-Clarity™ quality level = MQ200

A92775-10G A92775-1G A92775-5G
A92775-10GEA 5930 SEK
A92775-10G A92775-1G A92775-5G
Arsenazo III for calcium determination, Sigma-Aldrich®
Arsenazo III

Arsenazo III has been used as a color forming reagent to determine uranium concentration.


Arsenazo III is a metallochromic dye. Arsenazo III is used in the determination of calcium in biological samples. It is used to evaluate calcium transport in permeabiliSed cells. It is also used for the detection of rare earth metals (polyvalent metal ions).


Arsenazo III is used for the spectrophotometric determination of uranium and thorium.

Formel: C₂₂H₁₈As₂N₄O₁₄S₂
MW: 776,38 g/mol
Smältpunkt: >320 °C (lit.)
Storage Temperature: Room Temperature
MDL Number: MFCD00036695
CAS nummer: 1668-00-4
EINECS: 216-788-6
UN: 3465
ADR: 6.1,III
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Specifikation testresultat

Appearance (Colour) Brown to Very Dark Brown and Black
Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Carbon 25.5 - 38.1 %
Nitrogen 5.5 - 8.3 %
Calcium (Ca) ≤1000 ppm
Solubility (Colour)
c = 1 mg/ml, 1 N NH₄OH
Dark Blue to Very Dark Blue and Dark Purple to Very Dark Purple and Blue-Purple

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