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CAS: 7477-67-0, technical analysis of bispyrazolone
**English Name:** Bis-pyrazolone; Bis(1-phenyl-3-methyl-5-pyrazolone); 4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone); 3,3'-Dimethyl-1,1'-diphenyl[4,4'-bi-(2-pyrazoline)-5,5'-dione]; Bis(3-methyl-1-phenylpyrazol-5-one)
**Other Names:** Bispyrazolone; 4,4'-bis(3-methyl-1-phenylpyrazolin-5-one); 4,4'-Bis(1-phenyl-3-methyl-5-pyrazolone); 3,3'-dimethyl-1,1'-diphenyl[4,4'-bis(2-pyrazoline)-5,5'-dione]; 2,2,4,4-tetrahydro-5,5-dimethyl-2,2-diphenyl-[4,4-bis-3H-pyrazole]-3,3-dione
**CAS Number:** 7477-67-0
**Molecular Formula:** Câ‚‚â‚€Hâ‚₈Nâ‚„Oâ‚‚
**Molecular Weight:** 346.39 g/mol
**Grade:** AR (Analytical Reagent)
**Purity:** ≥98.0%
**Dissolution Test in DMF:** Qualified
**Cyanide Analysis Test:** Qualified
**Physical Properties:**
A white to yellowish crystalline powder. It is soluble in pyridine, ammonia, and sodium carbonate solution. It dissolves in hot ethanol but is insoluble in ether, petroleum ether, and water. The compound is known to be unstable in aqueous environments and tends to evaporate when exposed to water vapor.
**Chemical Behavior:**
This compound reacts with metal ions such as copper, cobalt, and silver. It also forms a characteristic blue complex with ferric chloride, commonly referred to as "pyrazole blue." When heated, it decomposes around 250°C.
**Safety Information:**
Irritating to the skin and may cause allergic reactions upon contact. Handle with care, and avoid direct exposure.
**Applications:**
Used primarily in biochemical research for the determination of various elements and compounds, including cobalt, copper, iron, nickel, silver, hydrocyanic acid, cyanic acid, ammonia, and vitamin B12.
**Storage:**
Store in a cool, dry place away from moisture and incompatible substances. Keep container tightly sealed.
**Note:** This product is intended for laboratory use only and should be handled according to standard safety protocols. Always refer to the latest Safety Data Sheet (SDS) for detailed handling and disposal information.