Synonyms:

4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazole-1-yl)benzenesulfonic acid;Pyrazolic acid;3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one,98%,pract.;4-acid pyrazolone;-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one;4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid;1-(4-Sulfophenyl)-3-methyl-5-pyrazolon;4-(3-methyl-5-oxo-4H-pyrazol-1-yl)benzenesulfonic acid

Canonical SMILES: CC1=NN(C(=O)C1)C2=CC=C(C=C2)S(=O)(=O)O

HS Code: 29331990

Density:1.4456(roughestimate)

Refractive Index:1.5650(estimate)

Melting Point: >252 °C(dec.)(lit.)

PKA: pKa4.90(H2Ot=37I=0.15)(Uncertain)

Hazard Codes: C

Risk Statements:  34

Safety Statements: 26-36/37/39-45

Transport: UN 1759 8/PG 2

WGK Germany: 1

HazardClass: 8