Black 3 CAS 4197-25-5
| Risk Codes | R11 – Highly Flammable R36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S24/25 – Avoid contact with skin and eyes. S16 – Keep away from sources of ignition. S37/39 – Wear suitable gloves and eye/face protection S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| RTECS | SD4431500 |
| TSCA | Yes |
| HS Code | 32041900 |
| Hazard Class | IRRITANT |
| Toxicity | LD50 ivn-mus: 63 mg/kg CSLNX* NX#04918 |
Black 3 CAS 4197-25-5 Introduction
Sudan Black B is an organic dye with the chemical name methylene blue. It is a dark blue crystalline powder with good solubility in water.
It is also widely used in histology as a staining reagent under the microscope to stain cells and tissues for easy observation.
The method for the preparation of Sudan black B is usually obtained by the reaction between Sudan III and methylene blue. Sudan Black B can also be obtained by reduction from methylene blue.
The following safety information should be taken care of when using Sudan Black B: It is irritating to the eyes and skin, and direct contact should be avoided when touched. Appropriate protective measures, such as laboratory gloves and goggles, should be worn during handling or touching. Do not inhale the powder or solution of Sudan Black B and avoid ingestion or swallowing. Proper operating procedures should be followed in the laboratory and should be used in a well-ventilated area.
