o-Phenylenediamine
ALDRICH/P23938 - flaked, 99.5%
Synonym: 1,2-Diaminobenzene; 1,2-Phenylenediamine; OPD
CAS Number: 95-54-5
Empirical Formula (Hill Notation): C6H8N2
Molecular Weight: 108.14
EC Number: 202-430-6
MDL Number: MFCD00007721
Linear Formula: C6H8N2
Product Type: Chemical
o-Phenylenediamine (OPD) is a chromogenic substrate suitable for use in ELISA procedures which utilize horseradish peroxidase conjugates. This substrate produces a soluble end product that is orange-brown in color and can be read spectrophotometrically at 450 nm. The OPD reaction may be stopped with 3N HCl or 3 M H2SO4, and read at 492 nm.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P23938-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P23938-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: P23938-5G
| assay | 99.5% |
| bp | 256-258 °C |
| form | powder |
| InChI | 1S/C6H8N2/c7-5-3-1-2-4-6( |
| InChI key | GEYOCULIXLDCMW-UHFFFAOYSA |
| mp | 100-102 °C |
| Quality Level | 200  |
| SMILES string | Nc1ccccc1N |
| vapor density | 3.7 (vs air) |
| vapor pressure | 0.01 mmHg ( 25 °C) |
| Application: | o-Phenylenediamine can be used: • To prepare quinoxalines, benzimidazoles, and 1H-1,5-benzodiazepines by condensing with aryl aldehydes or ketones. • In the H2O mediated one-pot preparation of 1,2-disubstituted benzimidazoles by reacting with aldehydes in the presence of trimethylsilyl chloride. • In the copper-catalyzed synthesis of alkyne substituted quinoxalines by reacting with terminal alkynes. • In the preparation of 1,5-benzodiazepine derivatives by reacting with different ketones under neat reaction conditions via ytterbium trichloride catalyzed condensation reaction. |
| Packaging: | 5, 100, 500 g in glass bottle |
| Symbol |    GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H301 - H312 + H332 - H317 - H319 - H341 - H351 - H410 |
| Precautionary statements | P273 - P280 - P301 + P310 - P302 + P352 + P312 - P304 + P340 + P312 - P305 + P351 + P338 |
| Hazard Codes | T,N |
| Risk Statements | 20/21-25-36-40-43-50/53-68 |
| Safety Statements | 28-36/37-45-60-61 |
| RIDADR | UN 1673 6.1 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 276.8 °F - closed cup |
| Flash Point(C) | 136 °C - closed cup |
| Purity | 99.5% |
| bp | 256-258 °C |
| mp | 100-102 °C |
| UNSPSC | 12352100 |