4-(4-Nitrophenylazo)resorcinol 90% (dye content), Sigma-Aldrich®
Supplier: SIGMA-ALDRICH MICROSCOPY
Synonyms:
4-((4-Nitrophenyl)diazenyl)benzene-1,3-diol, Azoviolet, Azo Violet, Magneson I
M-Clarity™ quality level = MQ200
114669-100G
114669-25G
114669-100GEA
181
GBP
114669-100G
114669-25G
4-(4-Nitrophenylazo)resorcinol 90% (dye content), Sigma-Aldrich®
4-(4-Nitrophenylazo)resorcinol
4-(4-Nitrophenylazo) resorcinol, also known as azo violet or magneson I, is a red colored powder. It functions as a spot test reagent and forms blue lake on reaction with Mg(OH)₂ in alkaline solution. It is mainly used for determining the presence of magnesium in the solution. 4-(4-Nitrophenylazo)resorcinol is a pH indicator.
Formula:
C₁₂H₉N₃O₄ MW: 259,22 g/mol Melting Pt: 195,..200 °C (dec., lit.) |
MDL Number:
MFCD00007310 CAS Number: 74-39-5 EINECS: 200-808-5 |
Specification Test Results
Appearance (colour) | Orange to very dark orange and red to very dark red and dark red-orange and very dark red-brown |
Appearance (form) | Powder |
Infrared spectrum | Conforms to structure |
Wavelength | 439 - 445 nm |
Extinction coefficient, c = 0.005 g/L in methanol + 1 ml 0.1 N NaOH | ≥37000 |
Carbon | 49.5 - 61.7% |
Nitrogen | 14.4 - 18.0% |
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