Fast Yellow G
Synonym(s):2-[(4-Methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide;Hansa Yellow G
- CAS NO.：2512-29-0
- Empirical Formula: C17H16N4O4
- Molecular Weight: 340.33
- MDL number: MFCD00078234
- EINECS: 219-730-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:25:01
What is Fast Yellow G?
The Uses of Fast Yellow G
The Hansa yellow is a bright monoarylide often used in trade sales and emulsion paints. They have low opacity in paint films and are soluble in aromatic solvents.
The Uses of Fast Yellow G
Hansa Yellow is used in method for dyeing keratinous material, comprising the use of an Organosilicon compound, a Chromophoric compound and a film-forming polymer II.
Preparation
4-Methyl-2-nitrobenzenamine?diazo, and 3-Oxo-N-phenylbutanamide?coupling.
Properties and Applications
brilliant yellow. Slightly soluble in ethanol, acetone and benzene. Melting point 256 ℃. The strong sulfuric acid for golden brown, after diluted yellow precipitation; No change in nitric acid; In strong hydrochloric acid solution for red; Sodium hydroxide solution in a dilute no change. And C.I.Pigment Yellow 1 the same chemical structure.
Properties of Fast Yellow G
| Melting point: | >255°C (dec.) |
| Boiling point: | 546.5±50.0 °C(Predicted) |
| Density | 1.30±0.1 g/cm3(Predicted) |
| vapor pressure | 0Pa at 25℃ |
| storage temp. | Amber Vial, -20°C Freezer |
| solubility | Chloroform (Slightly, Heated, Sonicated), DMSO (Very Slightly, Heated) |
| Colour Index | 11680 |
| form | neat |
| pka | 8.80±0.59(Predicted) |
| color | Yellow to Dark Yellow |
| Stability: | Light Sensitive |
| CAS DataBase Reference | 2512-29-0(CAS DataBase Reference) |
| EPA Substance Registry System | C.I. Pigment Yellow 1 (2512-29-0) |
Safety information for Fast Yellow G
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P280:Wear protective gloves/protective clothing/eye protection/face protection. P501:Dispose of contents/container to..… |
Computed Descriptors for Fast Yellow G
Fast Yellow G manufacturer
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![tetramethyl 2,2'-[1,4-phenylenebis[imino(1-acetyl-2-oxoethane-1,2-diyl)azo]]bisterephthalate](https://img.chemicalbook.in/CAS/GIF/68516-73-4.gif)
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