Methyl orange, pure indicator
Supplier: Thermo Scientific
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Danger
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Synonyms:
4-((4-(Dimethylamino)phenyl)diazenyl)benzenesulphonic acid, sodium salt, Methyl orange sodium salt, Helianthine
151421000
151425000
ACRO151421000EA
80.5
GBP
ACRO151421000
ACRO151425000
Methyl orange, pure indicator
Methyl orange
Formula:
C₁₄H₁₄N₃NaO₃S MW: 327,34 g/mol Boiling Pt: ∼90 °C (1013 hPa) Melting Pt: >300 °C Density: ~ 1 g/cm³ (20 °C) Flash Pt: 38 °C Storage Temperature: Ambient |
MDL Number:
MFCD00007502 CAS Number: 547-58-0 EINECS: 208-925-3 UN: 3143 ADR: 6.1,III Merck Index: 13,06127 |
Specification Test Results
Appearance | Orange Crystalline powder |
Infrared spectrum | Conforms |
Solubility | (0.1 % in water) Clear |
UV Lambda max | 461 to 469 nm (in 0.01N NaOH) |
Visual transition interval | from pH 3.2 (pink or red)to pH 4.4 (yellow-orange) |
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