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CAS NO. 119-93-7 O-Tolidine

Polyimide Monomers,PI,CPI ,Electronic chemicals ,Optical flims, OLED/LCD
Product Features
CAS NO. 119-93-7 O-Tolidine
Product Name 3,3′-Dimethyl-[1,1′-biphenyl]-4,4′- Diamine (O-Tolidine)
Synonyms 3,3′-Dimethyl-[1,1′-biphenyl]-4,4′-Diamine(O-Tolidine);1’-biphenyl)-4,4’-diamine,3,3’-dimethyl-(;1’-Biphenyl)-4,4’-diamine,3,3’-dimethyl-(1;1’-biphenyl)-4,4’-diamine-3,3’-dimethyl-(;1’-biphenyl]-4,4’-diamine,3,3’-dimethyl-[;2-Tolidin;2-Tolidina;2-Tolidine
CAS NO 119-93-7
Assay 99.5%
MF C14H16N2
MW 212.29
EINECS 204-358-0
Storage condition Room temperature
Capacity 1500KG/month
Package Paper drums /Fluoride drums /iron drums /plastic drums/IBC Tank ,etc.
Shipment method By Sea ,Air ,Courier door to door ,etc.
Loading Port China any port ,Beijing ,Shanghai ,Hongkong
Application Sensitive colorimetric reagent for gold and for free chlorine in water.
Product Categories Intermediates of Dyes and Pigments;Organics;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis;Building Blocks;Chemical Synthesis;Nitrogen Compounds;Organic Building Blocks;Polyamines


 Introduction of the Polyimide

Polyimide is a kind of polymer containing the imide ring (-co – nh-co -) on the main chain, which is the most important for the polymer containing phthalimide structure. As a special engineering material, polyimide has been widely used in aviation, aerospace, microelectronics, nano, liquid crystal, separation film, laser and so on.

Polyimide is one of the best comprehensive properties of organic polymer materials, high temperature of 400 ℃ above, use for a long time – 200 ~ 300 ℃ temperature range, no obvious melting point, high insulation performance, 103 hz dielectric constant under 4.0, the dielectric loss is only 0.004 ~ 0.007, F and H.

Feature of 3,3′-Dimethyl-[1,1′-biphenyl]-4,4′- Diamine (O-Tolidine) 

CAS NO. 119-93-7


  1. Excellent thermal stability
  2. Good chemical resistance
  3. Stable mechanical properties
  4. Polyimide does not require the addition of flame retardants to prevent combustion.


The related chemicals of 3,3′-Dimethyl-[1,1′-biphenyl]-4,4′- Diamine (O-Tolidine)  CAS NO. 119-93-7

  1. 9,9-Bis(4-aminophenyl)fluorene (FDA) CAS NO.15499-84-0
  2. 2,3,3′,4′-BiphenyLtetracarboxylic (α-BPDA) CAS NO.36978-41-3
  3. 2,2′-Bis(4-aminophenoxyphenyl) propane (BAPP) CAS NO.13080-86-9
  4. 3,3′-Dimethyl-[1,1′-biphenyl]-4,4′- Diamine (O-Tolidine) CAS NO. 119-93-7
  5. 1,1-Bis(4-aminophenyl) cyclohexane CAS NO.3282-99-3
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