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Merck
CN

89610

o-Toluidine

purum p.a., ≥99.5% (GC)

Synonym(s):

2-Aminotoluene, 2-Methylaniline

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About This Item

Linear Formula:
CH3C6H4NH2
CAS Number:
Molecular Weight:
107.15
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
202-429-0
Beilstein/REAXYS Number:
741981
MDL number:
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Product Name

o-Toluidine, purum p.a., ≥99.5% (GC)

InChI key

RNVCVTLRINQCPJ-UHFFFAOYSA-N

InChI

1S/C7H9N/c1-6-4-2-3-5-7(6)8/h2-5H,8H2,1H3

SMILES string

Cc1ccccc1N

vapor density

3.7 (vs air)

vapor pressure

0.26 mmHg ( 25 °C)

grade

purum p.a.

assay

≥99.5% (GC)

form

liquid

autoignition temp.

899 °F

impurities

≤0.1% water
≤0.5% m- and p-toluidine (GC)

ign. residue

≤0.01% (as SO4)

refractive index

n20/D 1.572 (lit.)
n20/D 1.572

bp

199-200 °C (lit.)
89-90 °C/11 mmHg (lit.)

mp

−28 °C (lit.)

solubility

H2O: slightly soluble

density

1.008 g/mL at 25 °C (lit.)

cation traces

Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Na: ≤20 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤1 mg/kg

Quality Level

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Application

o-Toluidine may be used as a TLC Visualization (Staining) Reagent for the detection of reducing sugars in protein hydrolysates by using high-performance thin-layer chromatography (HPTLC) coupled with UV diffuse reflectance scanning densitometry.

Disclaimer

may discolor on storage

General description

o-Toluidine belongs to the class of monocyclic aromatic amines, which are of research and industrial importance. It can be used as a derivatization agent for the resolution of analytes by the formation of chromophores, which can be visualized by UV radiation or fluorescence.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Carc. 1B - Eye Irrit. 2

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

185.0 °F - closed cup

flash_point_c

85 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品
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An o-toluidine method for detection of carbohydrates in protein hydrolysates
Morcol T and Velander WH
Analytical Biochemistry, 195(1), 153-159 (1991)
Determination of aromatic amines in textile after bromination, by gas chromatography coupled with electron capture detection
Dados AE, et al.
Chromatographia, 59(5-6), 335-341 (2004)
Emna Hmani et al.
Journal of hazardous materials, 170(2-3), 928-933 (2009-06-23)
Electrochemical oxidation of O-toluidine (OT) was studied by galvanostatic electrolysis using lead dioxide (PbO2) and boron-doped diamond (BDD) as anodes. The influence of operating parameters, such as current density, initial concentration of OT and temperature was investigated. Measurements of chemical
Hun-Je Jo et al.
Chemosphere, 70(6), 949-957 (2007-09-26)
In this study, major toxicants in pigment wastewaters (i.e. raw wastewater and effluent) were determined by toxicity identification evaluations (TIEs), and changes in their toxicities due to combined gamma-ray (gamma-ray) and ozone treatments were evaluated. From TIE results using Daphnia
Tania Carreón et al.
Occupational and environmental medicine, 67(5), 348-350 (2009-11-04)
In 1991, the US National Institute for Occupational Safety and Health (NIOSH) reported an increased bladder cancer risk in a cohort of 1749 workers potentially exposed to o-toluidine and aniline at a chemical manufacturing plant. As additional information showed that

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