3,3'-Dihydroxybenzidine , 98% , 2373-98-0
CAS NO.：2373-98-0
Empirical Formula: C12H12N2O2
Molecular Weight: 216.24
MDL number: MFCD00039149
EINECS: 679-800-2
| Pack Size | Price | Stock | Quantity |
| 1g | RMB79.20 | In Stock |
|
| 5G | RMB290.40 | In Stock |
|
| 25G | RMB891.20 | In Stock |
|
| 100g | RMB3519.20 | In Stock |
|
| others | Enquire |
PRODUCT Properties
| Melting point: | 292 °C |
| Boiling point: | 356.65°C (rough estimate) |
| Density | 1.1710 (rough estimate) |
| refractive index | 1.6660 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| Water Solubility | Practically insoluble in water |
| form | powder to crystal |
| pka | 9.15±0.10(Predicted) |
| color | White to Gray to Brown |
Description and Uses
3,3'-Dihydroxybenzidine is an organic synthesis intermediate used as a raw material for the synthesis of fire-resistant polymers (polyhydroxyamino acids).3,3'-Dihydroxybenzidine is also used in the preparation of hydroxyl-containing polyimides, all of which are synthesised to be soluble in NMP when heated. 3,3'-Dihydroxybenzidine is used in the synthesis of polyimides with hydroxyl groups. The glass transition temperature (Tg) of polyimides ranges from 336-360°C, independent of the structure of the tetracarboxylic dianhydride. The storage modulus of some polyimides does not decrease at elevated temperatures. All polyimides thermally transform into polybenzoxazole when heated to 500°C for 1 hour under vacuum.
4,4'-diaminobiphenyl-3,3'-diol is used as organic intermediates.
Safety
| Symbol(GHS) |   GHS07,GHS08 |
| Signal word | Warning |
| Hazard statements | H315-H319-H351-H373 |
| Precautionary statements | P201-P202-P260-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313-P308+P313-P405-P501 |
| Hazard Codes | T |
| Risk Statements | 40-45-48-36/37/38 |
| Safety Statements | 22-53-45-36/37/39-26-6 |
| RTECS | DV4900000 |
| HS Code | 29222990 |
