o-Tolidine
SIAL/31659 - analytical standard
Synonym: 3,3′-Dimethylbenzidine; 4,4′-Bianisidine
CAS Number: 119-93-7
Empirical Formula (Hill Notation): C14H16N2
Molecular Weight: 212.29
EC Number: 204-358-0
MDL Number: MFCD00014773
Linear Formula: [-C6H3(CH3)-4-NH2]2
Product Type: Chemical
| application(s) | cleaning products cosmetics food and beverages personal care |
| format | neat |
| grade | analytical standard |
| InChI | 1S/C14H16N2/c1-9-7-11(3-5 |
| InChI key | NUIURNJTPRWVAP-UHFFFAOYSA |
| mp | 128-131 °C (lit.) |
| Quality Level | 100  |
| shelf life | limited shelf life, expiry date on the label |
| SMILES string | Cc1cc(ccc1N)-c2ccc(N)c(C) |
| technique(s) | gas chromatography (GC): suitable |
| HPLC: suitable |
| Application: | o-Tolidine (3,3′-dimethylbenzidine) may be used as an analytical reference standard for the determination of the analyte formed from azo colorants in toy products by high-performance liquid chromatography with UV detection. |
| Application: | Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. |
| Application: | Sensitive colorimetric reagent for gold and for free chlorine in water. |
| Disclaimer: | May be carcinogenic. |
| General description: | o-Tolidine is widely used in the aniline dye industry for the synthesis of different azo dyes. |
| Symbol |    GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H302 - H350 - H411 |
| Precautionary statements | P202 - P264 - P270 - P273 - P301 + P312 - P308 + P313 |
| Hazard Codes | T,N |
| Risk Statements | 45-22-51/53 |
| Safety Statements | 53-45-61 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 212.0 °F - closed cup |
| Flash Point(C) | 100 °C - closed cup |
| mp | 128-131 °C (lit.) |
| UNSPSC | 41116107 |