Tolidine


Tolidine
2-Tolidine[1]
Identifiers
CAS number 119-93-7
PubChem 8413
KEGG C14443 YesY
Jmol-3D images Image 1
Properties
Molecular formula C14H16N2
Molar mass 212.29 g mol−1
Density 1.23 g/cm3
Melting point

129 °C, 402 K, 264 °F

Boiling point

300.5 °C, 574 K, 573 °F

Solubility in water 1.3 g/L
Hazards
R-phrases R45 R22 R51/53
S-phrases S53 S45 S61
Flash point 244 °C
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Tolidine is a group of isomeric organic compounds, the most prevalent of which is 2-tolidine (o-tolidine).

Contents

Chemistry

2-Tolidine is slightly soluble in water (1.3 g/L) and has a melting point of 129 °C. It readily forms salts with acids, such as the hydrochloride which is commercially available. 2-Tolidine can be produced by a benzidine rearrangement from a hydrazine derivative.[2]

Uses

2-Tolidine is a commercially important aromatic amines used mainly for dye production, but also for the production of certain elastomers. 2-Tolidine is an intermediate for the production of soluble azo dyes and insoluble pigments used particularly in the textile, leather and paper industries.

2-Tolidine also widely used as a reagent or indicator in analytical, clinical and forensic chemistry, such as in the analytical determination of gold.

Safety

2-Tolidine is toxic and possibly carcinogenic. It is listed as an IARC Group 2B carcinogen, meaning it is "possibly carcinogenic to humans".

References

  1. ^ Record of ortho-Tolidin in the GESTIS Substance Database from the IFA, accessed on 6.6.2008
  2. ^ Noller, Carl R.: Textbook of Organic Chemistry, Springer Verlag, 1960

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Look at other dictionaries:

  • tolidine — [täl′ə dēn΄, täl′ədin] n. [ TOL(UOL) + (BENZ)IDINE] any of a group of isomeric dimethyl derivatives of benzidine, C14H16N2, used in the manufacture of dyes and in the detection of gold and chlorine …   English World dictionary

  • tolidine — ˈtäləˌdēn, də̇n noun ( s) Etymology: International Scientific Vocabulary tol + idine : any of several isomeric aromatic diamines [−C6H3(CH3)NH2]2 that are homologues of benzidine and made from the nitrotoluenes by alkaline reduction: as a. : a… …   Useful english dictionary

  • tolidine — noun Etymology: International Scientific Vocabulary tol + idine Date: 1879 any of several isomeric aromatic diamines C14H16N2 that are homologues of benzidine and used especially as dye intermediates …   New Collegiate Dictionary

  • tolidine — /tol i deen , din/, n. Chem. any of several isomeric derivatives of biphenyl containing two methyl and two amino groups, esp. the ortho isomer that is used as a reagent and in the preparation of dyes. [1895 1900; TOL(UENE) + ID3 + INE2] * * * …   Universalium

  • tolidine — tol·i·dine …   English syllables

  • tolidine — tol•i•dine [[t]ˈtɒl ɪˌdin, dɪn[/t]] n. chem. any of several isomeric derivatives of biphenyl containing two methyl and two amino groups, esp. the ortho isomer that is used as a reagent • Etymology: 1895–1900; tol (uene) + idine …   From formal English to slang

  • tolidine — /ˈtɒlədin/ (say toluhdeen), / dɪn/ (say din) noun any of three isomeric derivatives of dimethylbenzidine, (C6H3CH3NH2)2, the orthoisomer of which is used in making dyes. {from tol(u) + id(e) + ine2} …   Australian English dictionary

  • meta-tolidine — noun see tolidine …   Useful english dictionary

  • ortho-tolidine — noun see tolidine …   Useful english dictionary

  • o-tolidine — o to·li·dine (tolґĭ dēn) a compound related to benzidine and formerly used in testing for occult blood; its use is now restricted because it is a carcinogen …   Medical dictionary