Arsenazo III CAS: 1668-00-4
MF: C22H18As2N4O14S2
MW: 776.37
A compound for Ca2+ determination.

Arsenazo III (CAS 1668-00-4)

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Alternate Names: 2,7-Bis(2-arsonophenylazo)chromotropic acid
Application: Arsenazo III is a compound for Ca2+ determination
CAS Number: 1668-00-4
Purity: ≥95%
Molecular Weight: 776.37
Molecular Formula: C22H18As2N4O14S2
Supplemental Information: This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data (including water content).
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Arsenazo III is used for the determination of Ca2+ in micromolar amounts. Found to investigate calcium transport in permeabilized cells and determination of serum calcium. Also potentially useful for the spectrophotometric determination of uranium and thorium.


Anal. Chim. Acta 71, 375, (1974); Anal. Chim. Acta 68, 73, (1974)

Physical State :
Solubility :
Soluble in water (partly), 1N NH4OH (1 mg/ml), and alcohol.
Storage :
Store at -20° C
Melting Point :
>320° C (lit.)
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
WGK Germany :
PubChem CID :
MDL Number :
EC Number :
Beilstein Registry :

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Arsenazo III (CAS 1668-00-4) Product Citations

See how others have used Arsenazo III (CAS 1668-00-4). Click on the entry to view the PubMed entry .

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PMID: # 31127943  Toxicol. Sci. 170: 509-524.

Citations 1 to 1 of 1 total

Hello, do you have a protocol that we can use with arsenazo III t measure calcium?

Asked by: rihab
Thank you for your inquiry. Sorry ,we don't have protocol . For more detailed information about this question, please call us toll-free at (800) 457-3801 option 2, e-mail <[email protected]>, or use the live chat on our website.
Answered by: Technical Service 11
Date published: 2018-01-09
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