Crystal Ponceau 6R
Crystal Ponceau 6R (CAS: 2766-77-0), a vibrant organic dye with the molecular formula C20H12N2Na2O7S2 and a molecular weight of 502.43 g/mol. This red azo dye, identified by Colour Index Number 16250, is primarily utilised as a biological stain in laboratory settings. Its applications span cell biology and hematology, aiding in the visualisation of cellular structures and tissues.
- IUPAC
- Acid Red 44,Brilliant Crystal Scarlet,Crystal Scarlet,Ponceau 6R
- Synonyms
- Acid Red 44Brilliant Crystal ScarletCrystal ScarletPonceau 6R

Biological Staining
Crystal Ponceau 6R is widely employed as a vital stain in microscopy. It is particularly useful for staining cytoplasm and connective tissues in histological preparations.
Cell Biology Research
In cell biology, this dye aids in the differential staining of cellular components, facilitating the study of cell morphology and organisation.
Hematology Applications
The stain finds application in hematological studies for the visualisation of blood cells and their constituents, aiding in diagnostic procedures.
| Molecular weight | 502.43 |
|---|---|
| Empirical formula | C20H12N2Na2O7S2 |
| Melting point | >300 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 16250 |
|---|---|
| Gene Information | human ... PTPN1(5770), PTPRF(5792) |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Crystal Ponceau 6R used for?
+
Crystal Ponceau 6R is used as a biological stain in cell biology, hematology, and histology for visualising cellular structures and tissues.
What is the CAS number and formula for Crystal Ponceau 6R?
+
The CAS number for Crystal Ponceau 6R is 2766-77-0, and its molecular formula is C20H12N2Na2O7S2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Crystal Ponceau 6R typically as a research or technical grade chemical. Specific purity and assay details are available on the product's Certificate of Analysis. TSS does not represent this product as USP, BP, EP, or for food/nutraceutical use.
How should Crystal Ponceau 6R be handled safely?
+
Handle Crystal Ponceau 6R with appropriate personal protective equipment, including eyeshields and gloves. A respirator filter (type N95 or P1) is recommended. Refer to the Safety Data Sheet (SDS) for comprehensive handling information. It is classified under WGK Germany 3.
How is Crystal Ponceau 6R packed and shipped?
+
Crystal Ponceau 6R is carefully packed according to international shipping regulations to ensure safe transit. TSS is a global supplier and exporter of fine chemicals.
How can I request a quote or sample for Crystal Ponceau 6R?
+
To request a quote or a sample of Crystal Ponceau 6R, please contact our sales team through the website or by calling us directly. Please provide your contact details and the quantity required.
▶ Related products

(−)-Curcumol
C15H24O2
Cell Biology
(±) Clopidogrel hydrogensulfate
Cell Biology

(±)-L-Alliin
C6H11NO3S
Cell Biology
(±)-2-Amino-4-phosphonobutyric acid
C4H10NO5P
Cell Biology
(±)-2-Methylarachidonoyl-2′-fluoroethylamide
C23H38NOF
Cell Biology
(±)-3,4-Methylenedioxy-N-ethylamphetamine hydrochloride
Cell Biology

(±)-3,4-Methylenedioxyamphetamine hydrochloride
Cell Biology

(±)-3,4-Methylenedioxymethamphetamine hydrochloride
Cell Biology
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis