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O-AMINOAZOTOLUENE

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O-AMINOAZOTOLUENE Basic information

Product Name:
O-AMINOAZOTOLUENE
Synonyms:
  • o-Aminoazotoluene Solution, 100ppm
  • 2-Methyl-4-([2-methylphenyl]azo)benzeneamine
  • Benzenamine,2-methyl-4-[2-(2-methylphenyl)diazenyl]-
  • Toluene, o-aMinoazobenzene
  • oilyellowc
  • oilyellowc[qr]
  • oilyellowi
  • oilyellowi[qr]
CAS:
97-56-3
MF:
C14H15N3
MW:
225.29
EINECS:
202-591-2
Product Categories:
  • Cytochemistry Products
  • Hematology and Histology
  • Solvent Dyestuff
Mol File:
97-56-3.mol
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O-AMINOAZOTOLUENE Chemical Properties

Melting point:
101-102 °C
Boiling point:
356.8°C (rough estimate)
Density 
1.1303 (rough estimate)
refractive index 
1.5770 (estimate)
storage temp. 
Sealed in dry,2-8°C
solubility 
DMSO (Slightly), Methanol (Slightly)
pka
3.01±0.10(Predicted)
form 
Powder
Colour Index 
11160
color 
Red-brown
PH
pH : 1.4~2.8
Water Solubility 
7mg/L(37 ºC)
Merck 
14,420
BRN 
6506005
Stability:
Light Sensitive
CAS DataBase Reference
97-56-3(CAS DataBase Reference)
NIST Chemistry Reference
Benzenamine, 2-methyl-4-[(2-methylphenyl)azo]-(97-56-3)
IARC
2B (Vol. 8, Sup 7) 1987
EPA Substance Registry System
C.I. Solvent Yellow 3 (97-56-3)
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Safety Information

Hazard Codes 
T
Risk Statements 
45-22-43-35
Safety Statements 
53-45-36/37/39-26
RIDADR 
UN 1789 8/PG 2
WGK Germany 
3
RTECS 
XU8800000
TSCA 
Yes
HS Code 
29270000
Hazardous Substances Data
97-56-3(Hazardous Substances Data)
Toxicity
LD50 oral in dog: 300mg/kg

MSDS

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O-AMINOAZOTOLUENE Usage And Synthesis

Chemical Properties

red-brown crystalline powder

Chemical Properties

Aminoazotoluene forms golden yellow or reddish-brown crystalline solid.

Uses

C.I. 11160

Uses

Coloring oils, fats and waxes; manufacture of pigments. Chemical intermediate for the production of dyes.

Definition

ChEBI: Ortho-Aminoazotoluene is a member of azobenzenes.

Preparation

(a) will Sodium nitrite (1 Moore) to join O-Methylaniline (8.5 Moore) and hydrochloric acid (1 Moore), the temperature is maintained at 28 ℃ below, until diazotization finish. Add a small amount of hydrochloric acid (about 0.2 Moore), and heating (40 ℃, 3 hours), in order to separate, with Sodium hydroxide for mercerization, and distillation reservoir. In order to get the refined products, usable alcohol recrystallization; (b) O-Methylaniline?diazotization, and O-Methylaniline?base Methanesulfonic acid coupling, and then with Sodium hydroxide solution common boiling, hydrolysis off Methanesulfonic acid base.

General Description

Reddish-brown to golden crystals; orangish red powder. Odorless.

Air & Water Reactions

Dust may form an explosive mixture in air. Insoluble in water.

Reactivity Profile

O-AMINOAZOTOLUENE is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. O-AMINOAZOTOLUENE is sensitive to prolonged exposure to heat. O-AMINOAZOTOLUENE is incompatible with strong oxidizing agents.

Hazard

Possible carcinogen.

Fire Hazard

Flash point data for O-AMINOAZOTOLUENE are not available. O-AMINOAZOTOLUENE is probably combustible.

Safety Profile

Confirmed carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Poison by ingestion. Moderately toxic by subcutaneous route. An experimental teratogen. Human mutation data reported. When heated to decomposition it emits toxic fumes of NO,. See also AROMATIC AMINES.

Potential Exposure

An azo compound used in dyes, medicines; as a colorant in shoe polishes and other wax-based polishes.

Carcinogenicity

o-Aminoazotoluene is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity from studies in experimental animals.

Shipping

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

Properties and Applications

yellow. In the ethanol for yellow sheet crystallization, melting point 100 ℃. Soluble in Acetone, ethanol, Cellosolve and Toluene, insoluble in water. In concentrated sulfuric acid for brown, dilution after red orange solution, and precipitation; In concentrated nitric acid for red brown solution; In concentrated hydrochloric acid partly dissolved for brown; In 10% of the sulfuric acid insoluble; In 10% Sodium hydroxide solution slightly soluble, pale yellow. Dye alcohol solution to join hydrochloric acid red hydrochloride crystal, heating the solution. Used for paraffin color.

Standard Light Fastness Heat-resistant(℃) Water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO General 100 150Sublimation Indissolvable Indissolvable Poor

Purification Methods

Recrystallise the dye twice from EtOH, once from *benzene, then dry it in an Abderhalden drying apparatus. [Cilento J Am Chem Soc 74 968 1952, Sawicki J Org Chem 21 605 1956, Beilstein 16 H 334, 16 I 322, 16 II 178, 16 III 386, 16 IV 525.] CARCINOGENIC.

Incompatibilities

Dust may form explosive mixture in air. Azo compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. This chemical is sensitive to prolonged exposure to heat. This chemical is incompatible with strong oxidizing agents.

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