Alizarin red S

Name: Alizarin red S
Brand: Vaqora Chemicals
SKU: VQ-000456

About Alizarin red S

Alizarin red S is a biological stain carrying the CAS registry number 130-22-3. Formula C14H7NaO7S, molecular weight 342.26 g/mol. Systematically, it is named sodium 3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate. It is also known as Alizarin Carmine or Alizarin Red.

In its supplied form it is a reddish powder. Store in a tightly closed container in a cool, dry and well-ventilated place. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and biological staining. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 25 g, 100 g, 500 g and 1 kg packs, Alizarin red S is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Alizarin red S
Catalogue No.	VQ-000456
CAS Number	130-22-3
IUPAC name	sodium 3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate
Molecular formula	C₁₄H₇NaO₇S
Molecular weight	342.26 g/mol
Exact mass	341.981
HSN code	38220090
InChIKey	HFVAFDPGUJEFBQ-UHFFFAOYSA-M
SMILES	C1=CC=C2C(=C1)C(=O)C3=CC(=C(C(=C3C2=O)O)O)S(=O)(=O)[O-].[Na+]
PubChem CID	3955344

Physical properties
Physical form	Powder
Appearance	Reddish powder
H-bond donors / acceptors	2 / 7
TPSA	140 Å²
Synonyms	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, Sodium alizarinesulfonate, Mordant Red 3, Acid Red Alizarine, Alizarine Red A

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 130-22-3

AR / Spectroscopy

Alizarin red S, for spectroscopy 70%

CAS: 130-22-3
Formula: C₁₄H₇NaO₇S
MW: 342.26 g/mol

VQ-046181

Spectroscopy

Alizarin red S, for spectroscopy 70%

CAS: 130-22-3
Formula: C₁₄H₇NaO₇S
MW: 342.26 g/mol

VQ-046182

AR

Alizarine red S, GR

CAS: 130-22-3
Formula: C₁₄H₇NaO₇S
MW: 342.26 g/mol

VQ-000462

Frequently asked questions

What is the CAS number of Alizarin red S?

The CAS Registry Number of Alizarin red S is 130-22-3. It is also known as 3,4-Dihydroxy-9,10-dioxo-2-anthracenesulfonic acid sodium salt, Alizarin Carmine, Alizarin Red.

What is the molecular formula and molecular weight of Alizarin red S?

Alizarin red S has the molecular formula C14H7NaO7S and a molecular weight of 342.26 g/mol. Its IUPAC name is sodium 3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate.

Which grade and pack sizes of Alizarin red S can I order?

We supply Alizarin red S, in 25 g, 100 g, 500 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Alizarin red S?

Yes. Every lot of Alizarin red S is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Alizarin red S be shipped internationally?

Yes. Alizarin red S is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.