Sodium rhodizonate CAS#523-21-7

Sodium rose benjaculate, also known as sodium rose palmitate, is a purple or brown-black crystal, soluble in water to orange, slightly soluble in sodium bicarbonate solution, insoluble in alcohol, the solution is unstable, and must be freshly prepared when used.
Its physical and chemical properties are as follows:
Boiling point: 346.7℃ (760mmHg)
Melting point: ≥300℃
Molecular formula: C_{6} Na_{2} O_{6}
Molecular weight: 214.040
Flash point: 177.7℃
Exact mass: 213.949020
PSA: 114.40000
Sodium rose benjaculate can be used as a sensitive reagent for the determination of barium, strontium, scandium, lead, tin and sulfate, and as an indicator in the determination of barium and sulfate capacity.
Note when using and storing: It should be sealed and stored dry. Its safety level is s24/25 (avoid contact with skin and eyes).