Alizarin Red S
Alizarin Red S (CAS: 130-22-3), a sodium salt with the chemical formula C14H7NaO7S and a molecular weight of 342.26 g/mol, is a vibrant anthraquinone dye. It is primarily utilised as an adsorption indicator in titrations, particularly for determining chloride ions. This compound also serves as a valuable stain in histology and cell biology for identifying calcium deposits and other cellular components.
- IUPAC
- 3,4-Dihydroxy-9,10-dioxo-2-anthracenesulfonic acid sodium salt,Alizarin Carmine,Alizarin Red, water soluble,Alizarin sodium monosulfonate,Alizarin sulfonate sodium,Alizarinsulfonic acid sodium salt,Sodium alizarinsulfonate
- Synonyms
- Alizarin CarmineAlizarin RedAlizarin sodium monosulfonateAlizarin sulfonate sodiumAlizarinsulfonic acid sodium saltSodium alizarinsulfonate
Adsorption Indicator in Titration
Alizarin Red S functions as an effective adsorption indicator in argentometric titrations. It exhibits a distinct colour change at the equivalence point, aiding in the accurate determination of halides, most notably chloride ions.
Histological Staining
In histology, Alizarin Red S is widely employed for the differential staining of tissues. It is particularly useful for the visualization and quantification of calcium deposition in bone and other calcified structures.
Cell Biology Research
This dye is also applied in cell biology studies for detecting intracellular calcium. Its ability to selectively bind to calcium ions makes it a useful tool for investigating cellular processes involving calcium.
Analytical Reagent
As an analytical reagent, Alizarin Red S finds application in various chemical analyses where its chromogenic properties can be exploited for qualitative or quantitative assessments.
| Molecular weight | 342.26 |
|---|---|
| Empirical formula | C14H7NaO7S |
| Grade | for microscopy (Hist.)indicator (pH |
| Application | adsorption indicator |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Colour Index Number | 58005 |
|---|
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 Alizarin Red S used for?
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Alizarin Red S is primarily used as an adsorption indicator in titrations, particularly for chloride ion determination, and as a stain in histology and cell biology for identifying calcium deposits and other cellular components.
What are the CAS number and chemical formula for Alizarin Red S?
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The CAS number for Alizarin Red S is 130-22-3, and its chemical formula is C14H7NaO7S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Alizarin Red S in grades suitable for microscopy (Histology) and as a pH indicator. TSS does not represent this product as USP, BP, or EP grade.
How should Alizarin Red S be handled safely?
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Alizarin Red S may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation.
Is Alizarin Red S a controlled substance?
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The provided data does not indicate that Alizarin Red S is a controlled substance.
How is Alizarin Red S shipped and exported?
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Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals. Specific shipping and export details for Alizarin Red S can be provided upon inquiry.
How can I request a quote or sample for Alizarin Red S?
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To request a quote or sample for Alizarin Red S, please contact our sales department via the website or direct inquiry channels.
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