EMAIL THIS PAGE TO A FRIEND
31659 Supelco

o-Tolidine

analytical standard

Synonym: 3,3′-Dimethylbenzidine, 4,4′-Bianisidine

  • CAS Number 119-93-7

  • Linear Formula [-C6H3(CH3)-4-NH2]2

  • Molecular Weight 212.29

  •  Beilstein/REAXYS Number 2210640

  •  EC Number 204-358-0

  •  MDL number MFCD00014773

  •  PubChem Substance ID 329753869

Purchase

Properties

Related Categories Additional Standards, All alphabetical sorted, Analytical Standards, Analytical/Chromatography, Chromatography,
grade   analytical standard
InChI Key   NUIURNJTPRWVAP-UHFFFAOYSA-N
form   neat
shelf life   limited shelf life, expiry date on the label
application(s)   HPLC: suitable
  gas chromatography (GC): suitable
mp   128-131 °C (lit.)
Featured Industry   Cosmetics, Personal Care, and Cleaning Products
Food and Beverages
format   neat

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 & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3077 9 / PGIII
WGK Germany 
3
RTECS 
DD1225000
Flash Point(F) 
212 °F
Flash Point(C) 
100 °C

Documents

Certificate of Analysis

???PDP_SDS_LOT_NUMBER_ERROR_MSG???
Protocols & Articles

Articles

GC Analysis of a 32-Component Anilines Mix on SLB®-IL59

From our library of Articles, Sigma-Aldrich presents GC Analysis of a 32-Component Anilines Mix on SLB®-IL59
Keywords: Chromatography, Gas chromatography, Mass selective detector

US EPA Method 8270: GC Analysis of Semivolatiles on SLB®-5ms (20 m x 0.18 mm I.D., 0.36 μm), 28 °C/min Oven Ramp, Fast GC Analysis

From our library of Articles, Sigma-Aldrich presents US EPA Method 8270: GC Analysis of Semivolatiles on SLB®-5ms (20 m x 0.18 mm I.D., 0.36 μm), 28 °C/min Oven Ramp, Fast GC Analysis
Keywords: Chromatography, Gas chromatography, Purification

US EPA Method 8270: GC Analysis of Semivolatiles on SLB®-5ms, 350 °C Final Oven Temp.

From our library of Articles, Sigma-Aldrich presents US EPA Method 8270: GC Analysis of Semivolatiles on SLB®-5ms, 350 °C Final Oven Temp.
Keywords: Chromatography, Gas chromatography

Peer-Reviewed Papers
15

References

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?