Melting point: |
197-200 °C (dec.) (lit.) |
Boiling point: |
237.46°C (rough estimate) |
Density |
1.54 |
refractive index |
1.6400 (estimate) |
FEMA |
4430 | 3,4-DIHYDROXYBENZOIC ACID |
storage temp. |
Store below +30°C. |
solubility |
20g/l |
pka |
4.48(at 25℃) |
form |
Fine Crystalline Powder |
color |
Beige to brown |
PH |
3.78(1 mM solution);3.25(10 mM solution);2.74(100 mM solution) |
Odor |
at 100.00 %. mild phenolic balsamic |
Odor Type |
phenolic |
Water Solubility |
Soluble in hot alcohol and ether. Slightly soluble in water. |
Sensitive |
Air Sensitive |
Merck |
14,7894 |
BRN |
1448841 |
Stability: |
Stable. Incompatible with strong oxidizing agents, strong bases. |
InChIKey |
YQUVCSBJEUQKSH-UHFFFAOYSA-N |
LogP |
1.16 |
CAS DataBase Reference |
99-50-3(CAS DataBase Reference) |
EPA Substance Registry System |
Protocatechuic acid (99-50-3) |