Melting point: |
179-182 °C (lit.) |
Boiling point: |
412.44°C (rough estimate) |
Density |
0.839 g/mL at 25 °C |
vapor density |
9.3 (vs air) |
refractive index |
1.5930 (estimate) |
Flash point: |
11 °C |
storage temp. |
Store at +5°C to +30°C. |
solubility |
ethanol: soluble1mg/mL |
Colour Index |
13020 |
form |
Solid |
pka |
4.95(at 25℃) |
color |
Reddish-violet |
Odor |
Odorless |
PH Range |
4.4(red)-6.3(yellow) |
Water Solubility |
Practically insoluble in water. Soluble in alcohol, acetic acidSoluble in ethanol. Insoluble in water. |
λmax |
410nm, 530nm, 427nm, 519nm |
Merck |
14,6119 |
BRN |
750102 |
Stability: |
Stable. Incompatible with strong oxidizing agents. |
Major Application |
Waveguides, LED sensors, photoresists, liquid crystals, sol-gel matrix, optical sensors, paints, toys, detection of thiols, food freshness sensors, dental product, saliva sampling method, detecting lactic acid, carbohydrates |
InChIKey |
CEQFOVLGLXCDCX-MSUUIHNZSA-N |
CAS DataBase Reference |
493-52-7 |
IARC |
3 (Vol. 8, Sup 7) 1987 |
NIST Chemistry Reference |
Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-(493-52-7) |
EPA Substance Registry System |
Methyl red (493-52-7) |