Melting point: |
178-182 °C |
Boiling point: |
64.7 °C |
Density |
0.791 |
Flash point: |
12 °C |
storage temp. |
Store at +5°C to +30°C. |
solubility |
H2O: soluble |
form |
Solid |
pka |
2.3, 5.0(at 25℃) |
Colour Index |
13020 |
color |
White to yellow or beige, darkening on exposure to light |
PH |
8.2 (10g/l, H2O, 25℃) |
PH Range |
Red (1.2) to orange (3.4);Red (4.2) to yellow (6.3) |
Odor |
Odorless |
Water Solubility |
Soluble in water. Slightly soluble in ethanol. |
λmax |
437nm, 410nm, 493nm |
BRN |
4065488 |
Stability: |
Reported to be unstable, but this is probably a mistake on a commercial MSDS sheet. Incompatible with strong oxidizing agents. |
Major Application |
optical fibers, liquid crystal cells, holography, inks, toner, corrosion inhibitor, detergent |
CAS DataBase Reference |
845-10-3(CAS DataBase Reference) |
EPA Substance Registry System |
Benzoic acid, 2-[[4-(dimethylamino)phenyl]azo]-, sodium salt (845-10-3) |