Is Congo red hazardous?
Incompatibilities with Other Materials: Strong oxidizing agents, strong acids. Hazardous Decomposition Products: Carbon monoxide, oxides of nitrogen, oxides of sulfur, carbon dioxide. Hazardous Polymerization: Will not occur….
| US DOT | Canada TDG | |
|---|---|---|
| Hazard Class: | 4.1 | 4.1 |
| UN Number: | UN1325 | UN1325 |
| Packing Group: | II | II |
Is Congo Red flammable?
Not flammable or combustible. Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
How do you dispose of Congo red?
Waste disposal recommendations : Dispose in a safe manner in accordance with local/national regulations. Dispose of contents/container to comply with local, state and federal regulations. Avoid release to the environment. Avoid any discharge of the product into waste water.
Is methylene blue harmful to skin?
May cause discomfort. Ingestion May cause discomfort if swallowed. Skin contact Causes mild skin irritation. Prolonged contact may cause redness, irritation and dry skin.
What is the use of congo red?
Congo red was formerly used to dye cotton but has been superseded by dyes more resistant to light and to washing. It is still used in histology to stain tissues for microscopic examination, and to serve as an acid-base indicator, since it turns red in the presence of alkalies and blue when exposed to acids.
Why is it called Congo red?
“Congo” red was introduced in Berlin in 1885 as the first of the economically lucrative direct textile dyes. Conclusions: The Congo red stain was named “Congo” for marketing purposes by a German textile dyestuff company in 1885, reflecting geopolitical current events of that time.
What is Congo red dye?
Congo red is an organic compound, the sodium salt of 3,3′-([1,1′-biphenyl]-4,4′-diyl)bis(4-aminonaphthalene-1-sulfonic acid). It is an azo dye. Congo red is water-soluble, yielding a red colloidal solution; its solubility is greater in organic solvents.
Is gentian violet flammable?
DOT Hazard Classification: Class 4 Combustible Liquid UN number: Not applicable UN proper shipping name: Not applicable Transport hazard class(es): Not applicable Packing group number: Not applicable Page 5 Page 5 of 5 Environmental hazards: Not applicable Special precautions: Keep away from heat, sparks.
What are the dangers of methylene blue?
Eye: May cause chemical conjunctivitis. Causes eye irritation and possible injury.
What are the side effects of methylene blue?
What Are Side Effects of Methylene Blue?
- mild bladder irritation,
- dizziness,
- headache,
- increased sweating,
- nausea,
- vomiting,
- abdominal pain,
- diarrhea,
Is Congo Red basic or acidic?
Congo red is an acid-base indicator dye. In free solution the colour and absorption characteristics of Congo red depend not only on the pH but are also governed by the nature of the solvent environment.
What is the function of Congo Red?