Safranin O
CAS 477-73-6·C₂₀H₁₉ClN₄
Gram stain counterstain, supplied as powder and as ready 0.5% solution.
Grades offered
- FOR MICROSCOPYFor MicroscopyCertified dye content for reproducible staining.
Typical applications
- Gram staining — counterstain
- Plant histology and cartilage staining
Safranin O
C₂₀H₁₉ClN₄ · M.W. 350.85 g/mol
- CAS
- 477-73-6
- Batch
- Use before
Add to enquiry
Add as many products as you need and send one enquiry covering all of them, or send this item on its own. Bulk and drum quantities are quoted on request.
Pack sizes
- 25 g
- 500 ml (0.5% solution)
Identification
| CAS number | 477-73-6 |
|---|---|
| Molecular formula | C₂₀H₁₉ClN₄ |
| Molecular weight | 350.85 g/mol |
| Also known as | Safranine O, Basic Red 2 |
Related products
Phenolphthalein Indicator
CAS 77-09-8Phenolphthalein powder and 1% alcoholic solution — colourless below pH 8.3, pink above.
C₂₀H₁₄O₄ · 318.33 g/mol
Ex-stockINDICATORAR25 g · 100 g · 500 ml (1% solution)
Specification for Phenolphthalein Indicator
Specification for Phenolphthalein Indicator Pack sizes 25 g · 100 g · 500 ml (1% solution) Grades offered
INDICATORARTypical applications
- Acid–base titration endpoint
- Phenolphthalein alkalinity of water
- Carbonation depth testing on concrete
Full record, hazard data and enquiry for Phenolphthalein Indicator →
Methyl Orange Indicator
CAS 547-58-0Methyl orange to ACS specification — red below pH 3.1, yellow above pH 4.4.
C₁₄H₁₄N₃NaO₃S · 327.33 g/mol
Ex-stockACSINDICATOR25 g · 100 g
Specification for Methyl Orange Indicator
Specification for Methyl Orange Indicator Pack sizes 25 g · 100 g Grades offered
ACSINDICATORTypical applications
- Strong acid titration endpoint
- Total alkalinity of water (methyl orange alkalinity)
Full record, hazard data and enquiry for Methyl Orange Indicator →
Methyl Red Indicator
CAS 493-52-7Methyl red in AR grade — red below pH 4.4, yellow above pH 6.2.
C₁₅H₁₅N₃O₂ · 269.30 g/mol
Ex-stockARINDICATOR25 g · 100 g
Specification for Methyl Red Indicator
Specification for Methyl Red Indicator Pack sizes 25 g · 100 g Grades offered
ARINDICATORTypical applications
- Kjeldahl nitrogen titration (with bromocresol green)
- Methyl red test in microbiology
Full record, hazard data and enquiry for Methyl Red Indicator →
Eriochrome Black T
CAS 1787-61-7Complexometric indicator for total hardness titration against EDTA.
C₂₀H₁₂N₃NaO₇S · 461.38 g/mol
Ex-stockARINDICATOR25 g · 100 g
Specification for Eriochrome Black T
Specification for Eriochrome Black T Pack sizes 25 g · 100 g Grades offered
ARINDICATORTypical applications
- Total hardness of water by EDTA titration
- Magnesium and calcium complexometry
Also known as
- EBT
- Solochrome Black T
- Mordant Black 11
Full record, hazard data and enquiry for Eriochrome Black T →
