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235339 Arsenazo III CAS: 1668-00-4

Specifications
References
CAS Number
1668-00-4
Grade
Reagent Grade
MDL Number
MFCD00036695
Molecular Formula
C₂₂H₁₈As₂N₄O₁₄S₂
Molecular Weight
776.37
EU Commodity Code
38220090
Shipping Temp
RT
Storage Temp
RT
3,6-Bis[2-(2-arsonophenyl)diazenyl]-4,5-dihydroxy-2,7-naphthalenedisulfonic Acid; 2,7-Bis(2,2'-arsonophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic Acid; 2,7-Bis(2-arsonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic Acid; NSC 91528; 2,2'-(1,8-Dihydroxy-3,6-disulfo-2,7-naphthylenebisazo)di-benzenearsonic Acid; 3,6-Bis[(o-arsonophenyl)azo]-4,5-dihydroxy-2,7-naphthalenedisulfonic Acid

Arsenazo III is used for the determination of Ca2+ in micromolar amounts, to investigate calcium transport in permeabilized cells and for the determination of serum calcium. Spectrophotometric reagent for U, Th, Zr and other metals. Indicator for the precipitation titration of SO4 with Ba.

Synonyms
3,6-Bis[2-(2-arsonophenyl)diazenyl]-4,5-dihydroxy-2,7-naphthalenedisulfonic Acid; 2,7-Bis(2,2'-arsonophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic Acid; 2,7-Bis(2-arsonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic Acid; NSC 91528; 2,2'-(1,8-Dihydroxy-3,6-disulfo-2,7-naphthylenebisazo)di-benzenearsonic Acid; 3,6-Bis[(o-arsonophenyl)azo]-4,5-dihydroxy-2,7-naphthalenedisulfonic Acid
CAS No
776.37
Molecular Formula
C₂₂H₁₈As₂N₄O₁₄S₂
Molecular Weight
776.37
Appearance
Dark brown solid
Purity
≥96% (Titration)
Calcium (Ca)
≤0.1%
Sensitivity
To pass test
Loss on Drying
≤5%
λ max
535-545nm
Storage
RT
References
Anal. Chim. Acta 71, 375, (1974); Anal. Chim. Acta 68, 73, (1974)
USBio References
No references available
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