31659

o-Tolidine

analytical standard

• Synonym(s): 3,3′-Dimethylbenzidine, 4,4′-Bianisidine
• Linear Formula: [-C₆H₃(CH₃)-4-NH₂]₂
• CAS Number: 119-93-7
• Molecular Weight: 212.29
• Beilstein: 2210640
• EC Number: 204-358-0
• MDL number: MFCD00014773
• UNSPSC Code: 41116107
• PubChem Substance ID: 329753869
• NACRES: NA.24

Properties

• grade: analytical standard
• Quality Level: 100
• shelf life: limited shelf life, expiry date on the label
• technique(s): HPLC: suitable; gas chromatography (GC): suitable
• mp: 128-131 °C (lit.)
• application(s): cleaning products; cosmetics; food and beverages; personal care
• format: neat
• SMILES string: Cc1cc(ccc1N)-c2ccc(N)c(C)c2
• InChI: 1S/C14H16N2/c1-9-7-11(3-5-13(9)15)12-4-6-14(16)10(2)8-12/h3-8H,15-16H2,1-2H3
• InChI key: NUIURNJTPRWVAP-UHFFFAOYSA-N

Description

General description

o-Tolidine is widely used in the aniline dye industry for the synthesis of different azo dyes.

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.

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Sensitive colorimetric reagent for gold and for free chlorine in water.

Warning

May be carcinogenic.

Safety Information

• Pictograms: GHS08,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H302,H350,H411
• Precautionary Statements: P202 - P264 - P270 - P273 - P301 + P312 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Chronic 2 - Carc. 1B
• Storage Class Code: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 3
• Flash Point(F): 212.0 °F - closed cup
• Flash Point(C): 100 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves