CAS Number
547-58-0
Formula
C14H14N3NaO3S
Weight
327,34
Acid Orange 52; Orange III; 4-(Dimethylamino) azo-benzenesulfonic Acid, Sodium Salt
| Appearance | Yellowish-orange colored powder |
| Identity (IR) | Conforms to structure |
| Solubility (0,1 % in water) | Clear (passes ACS test) |
| Visual transition range | from pH 3,2 (pink or red) to pH 4,4(yellow-orange) |
| Absorption maxima in 0,01 N NaOH | 461 to 469 nm |
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