Red 24 CAS 85-83-6
| Risk Codes | R36/38 – Irritating to eyes and skin. R45 – May cause cancer |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 – Wear suitable protective clothing. S53 – Avoid exposure – obtain special instructions before use. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| WGK Germany | 3 |
| RTECS | QL5775000 |
| TSCA | Yes |
| HS Code | 32129000 |
| Hazard Class | IRRITANT |
Introduction
Sudan IV. is a synthetic organic dye with the chemical name of 1-(4-nitrophenyl)-2-oxo-3-methoxy-4-nitrogenous heterobutane.
Sudan IV. is a red crystalline powder that is soluble in organic solvents such as ethanol, dimethyl ether and acetone, and insoluble in water.
The preparation method of Sudan dyes IV. is mainly obtained by the reaction of nitrobenzene with nitrogenous heterobutane. The specific steps are to first react nitrobenzene with nitrogenous heterobutane under acidic conditions to generate a precursor compound of Sudan IV. Then, under the action of an oxidizing agent, the precursor compounds are oxidized to the final Sudan IV. product.
It can be irritating to the skin, eyes, and respiratory tract and should be used with appropriate protective gear such as gloves, goggles, and masks. Sudan dyes IV. have a certain toxicity and should be avoided in direct contact or ingestion. When using and storing, care should be taken to avoid contact with oxidants or combustibles.
