12225-21-7 Usage
Uses
Used in Dyes and Metabolites:
Food Yellow 4:1 is used as a coloring agent in the dyes and metabolites industry due to its vibrant yellow color and ability to be mixed with various substances. Its heat, light, oil, and salt resistance make it a suitable choice for applications requiring stability and long-lasting color.
Used in Environmental Testing:
In the field of environmental testing, Food Yellow 4:1 serves as a synthetic organic pigment for various analytical and monitoring purposes. Its properties, such as solubility and resistance to different conditions, make it a valuable tool for detecting and assessing environmental contaminants and pollutants.
Preparation
4-Aminobenzenesulfonic acid?diazo, and 5-Oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid?coupled into aluminum salt deposit into color.
Air & Water Reactions
Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.
Reactivity Profile
Food Yellow 4:1 is an azo dye complex. 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.
Fire Hazard
Flash point data for Food Yellow 4:1 are not available. Food Yellow 4:1 is probably combustible.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 12225-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,2,2 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 12225-21:
(7*1)+(6*2)+(5*2)+(4*2)+(3*5)+(2*2)+(1*1)=57
57 % 10 = 7
So 12225-21-7 is a valid CAS Registry Number.
InChI:InChI=1/3C16H12N4O9S2.Al/c3*21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;/h3*1-8,13H,(H,22,23)(H,24,25,26)(H,27,28,29);/q;;;+3/p-3/b3*18-17+;
