Sulfarsazene is a chemical compound with the formula , a metal indicator.
Uses
Sulfarsazene is used as a metal indicator for the spectrophotometric and titrimetric determination of Pb
2+ ions at pH 9.8–10.0 and Zn
2+ at pH 9.3–9.6 (color transition from orange-pink to lemon yellow).
[{{cite journal , last1=Toroptsev , first1=Academician I. V. , last2=Eshchenko , first2=V. A. , title=Histochemical detection of zinc by means of sulfarsazene , journal=Bulletin of Experimental Biology and Medicine , date=1 September 1971 , volume=72 , issue=3 , pages=1097–1099 , doi=10.1007/BF00802415 , url=https://link.springer.com/article/10.1007/BF00802415 , access-date=18 April 2025 , language=en , issn=1573-8221, url-access=subscription ]
Physical properties
Sulfarsazene is soluble in water, easily soluble in an aqueous solution of
sodium tetraborate
The BORAX Experiments were a series of safety experiments on boiling water reactor, boiling water nuclear reactors conducted by Argonne National Laboratory in the 1950s and 1960s at the National Reactor Testing Station in eastern Idaho. , slightly soluble in 95% alcohol, practically insoluble in
acetone
Acetone (2-propanone or dimethyl ketone) is an organic compound with the chemical formula, formula . It is the simplest and smallest ketone (). It is a colorless, highly Volatile organic compound, volatile, and flammable liquid with a charact ...
,
chloroform
Chloroform, or trichloromethane (often abbreviated as TCM), is an organochloride with the formula and a common solvent. It is a volatile, colorless, sweet-smelling, dense liquid produced on a large scale as a precursor to refrigerants and po ...
,
benzene
Benzene is an Organic compound, organic chemical compound with the Chemical formula#Molecular formula, molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar hexagonal Ring (chemistry), ring with one hyd ...
.
See also
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Bromothymol blue
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Litmus
Litmus is a water-soluble mixture of different dyes extracted from lichens. It is often absorbed onto filter paper to produce one of the oldest forms of pH indicator, used to test materials for acidity. In an acidic medium, blue litmus paper ...
*
Methyl orange
Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium. Because it changes color at the p ...
*
Phenolphthalein
Phenolphthalein ( ) is a chemical compound with the chemical formula, formula carbon, C20hydrogen, H14oxygen, O4 and is often written as "HIn", "HPh", "phph" or simply "Ph" in shorthand notation. Phenolphthalein is often used as an indicator in ...
*
pH indicator
A pH indicator is a halochromism, halochromic chemical compound added in small amounts to a Solution (chemistry), solution so the pH (acidity or Base (chemistry), basicity) of the solution can be determined visually or spectroscopically by chang ...
*
Universal indicator
References
PH indicators
Complexometric indicators
Organoarsenic compounds
Aromatic compounds
Azo dyes
Organic pigments
Sulfonates
Nitrobenzene derivatives