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Solvent Yellow 2

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Solvent Yellow 2 Basic information

Product Name:
Solvent Yellow 2
Synonyms:
  • 4-(Dimethylamino)azobenzol
  • 4-(Dimethylamino)phenylazobenzene
  • 4-(Phenylazo)-N,N-dimethylaniline
  • 4-Dimethylaminoazobenzene,CI 11020
  • 4-Dimethylaminoazobenzene,CI 11020 ph.eur
  • brilliantfastyellow
  • Butter OR Methyl Yellow
  • ButteryellowMethylyellow
CAS:
60-11-7
MF:
C14H15N3
MW:
225.29
EINECS:
200-455-7
Product Categories:
  • Azo
  • Analytical Chemistry
  • Indicator (pH)
  • pH Indicators
  • Solvent Dyestuff
Mol File:
60-11-7.mol
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Solvent Yellow 2 Chemical Properties

Melting point:
111 °C (dec.)(lit.)
Boiling point:
356.8°C (rough estimate)
Density 
1.1303 (rough estimate)
vapor pressure 
3 x 10-7 mmHg (estimated, NIOSH, 1997)
refractive index 
1.5770 (estimate)
storage temp. 
Store at RT.
solubility 
Solubility Insoluble in water; soluble in ethanol, benzene, ether, chloroform,petroleum ether, mineralacids, oils
pka
3.226(at 25℃)
form 
Powder
Colour Index 
11020
color 
Yellow
PH
2.9-4.0
PH Range
2.9(red)-4(yellow/orange)
Water Solubility 
13.6 mg/L
λmax
408nm, 256nm, 508nm
Merck 
14,3229
BRN 
746016
Stability:
Stable, but heat and light sensitive. Incompatible with strong oxidizing agents, strong acids.
Major Application
Electrochromic materials, sol-gel coatings, display device, inks, gasdetection apparatus, status assessment indetection apparatus, nematocides, hair dyes, diapers, food storage, status assessment inbreast cancer, detecting carbohydrates, bacteria, diagnosing cervical disease, wound dressing materials
CAS DataBase Reference
60-11-7(CAS DataBase Reference)
IARC
2B (Vol. 8, Sup 7) 1987
NIST Chemistry Reference
Benzenamine, N,N-dimethyl-4-(phenylazo)-(60-11-7)
EPA Substance Registry System
4-Dimethylaminoazobenzene (60-11-7)
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Safety Information

Hazard Codes 
T
Risk Statements 
25-40-68-45-23/24/25
Safety Statements 
36/37-45-53-22
RIDADR 
UN 2811 6.1/PG 3
WGK Germany 
3
RTECS 
BX7350000
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
29270000
Hazardous Substances Data
60-11-7(Hazardous Substances Data)
Toxicity
Acute oral LD50 for mice 300 mg/kg, rats 200 mg/kg (quoted, RTECS, 1985).

MSDS

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Solvent Yellow 2 Usage And Synthesis

Description

4-N,N-Dimethylaminobenzene diazonium chloride is a diazo compound found in diazo copy paper. It is allergenic only when unexposed.

Chemical Properties

yellow to orange crystalline powder

Uses

For determination of free HCl in gastric juice; spot test identification of peroxidized fats; pH indicator (red 2.9, yellow 4.0).

Uses

Formerly used as a coloring agent in foods, drugs, and cosmetics

Definition

A banned food coloring.

Production Methods

4-Dimethylaminoazobenzene was produced in large quantities in the early 1900s but is currently not produced in any significant commercial quantity in the United States.

General Description

Yellow crystalline leaflets or an orange powder.

Air & Water Reactions

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

Reactivity Profile

Solvent Yellow 2 can detonate, particularly if sensitized by the presence of metal salts or strong acids. May form toxic gases 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. May form flammable gases with alkali metals. May react explosively with strong oxidizing agents, metal salts, peroxides, and sulfides. May react explosively with strong oxidizing agents, metal salts, peroxides, and sulfides.

Hazard

Carcinogen.

Health Hazard

4-Dimethylamino-azobenzene (XIII) is the parent compound of the amino-azo dye carcinogens; it is also known in the earlier literature as Butter Yellow, because it was used to color butter and vegetable oils before its carcinogenic activity was discovered. Many derivatives of XIII have been prepared and tested for carcinogenic activity. In the rat, the amino-azo dye carcinogens, administered in the diet, specifically induce hepatomas. Tumor induction by most of the amino-azo dyes is delayed or inhibited by high dietary levels of riboflavin (vitamin B2) or protein. Replacement of the –N=N– azo linkage by –CH=CH–, as in 4-dimethylaminostilbene (XIV), results in widening the target tissue spectrum; XIV induces tumors in the liver, mammary gland, and ear duct. Mice are much more resistant than rats to the carcinogenic activity of both amino-azo dyes and aminostilbenes.

Fire Hazard

Flash point data for Solvent Yellow 2 are not available. Solvent Yellow 2 is probably combustible.

Safety Profile

Confirmed carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Poison by ingestion and intraperitoneal routes. Experimental teratogenic and reproductive effects. Human mutation data reported. When heated to decomposition it emits toxic fumes of NOx

Carcinogenicity

4-Dimethylaminoazobenzene is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity fromstudies in experimental animals.

Environmental Fate

Chemical/Physical. Releases toxic nitrogen oxides when heated to decomposition (Sax and Lewis, 1987).
At influent concentrations of 1.0, 0.1, 0.01, and 0.001 mg/L, the GAC adsorption capacities were 249, 140, 83, and 48 mg/g, respectively (Dobbs and Cohen, 1980).

Purification Methods

Crystallise the dye from acetic acid or isooctane, or from 95% EtOH by adding hot water and cooling. Dry it over KOH under vacuum at 50o. [Beilstein 6 IV 448.] CARCINOGEN.

Solvent Yellow 2 Preparation Products And Raw materials

Raw materials

Solvent Yellow 2Supplier

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