Tartrazine, GR for microscopy

Name: Tartrazine, GR for microscopy
Brand: Vaqora Chemicals
SKU: VQ-000717

About Tartrazine, GR for microscopy

Tartrazine is a biological stain in AR / Microscopy grade carrying the CAS registry number 1934-21-0. Its molecular formula is C16H9N4Na3O9S2 and its molecular weight is 534.4 g/mol. Its systematic (IUPAC) name is trisodium, 5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4H-pyrazole-3-carboxylate. It is also known as Acid Yellow 23 or Yellow 5.

In its supplied form it is an orange powder. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for histology and cytology staining, microscopy and clinical laboratories. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 25 g, 100 g, 1 kg and 5 x 1 kg packs, Tartrazine is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Tartrazine, GR for microscopy
Catalogue No.	VQ-000717
CAS Number	1934-21-0
IUPAC name	trisodium;5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4H-pyrazole-3-carboxylate
Molecular formula	C₁₆H₉N₄Na₃O₉S₂
Molecular weight	534.4 g/mol
Exact mass	533.9504
Grade	AR / Microscopy
HSN code	32041982
InChIKey	UJMBCXLDXJUMFB-UHFFFAOYSA-K
SMILES	C1=CC(=CC=C1N=NC2C(=NN(C2=O)C3=CC=C(C=C3)S(=O)(=O)[O-])C(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]
PubChem CID	164825

Physical properties
Physical form	Powder
Appearance	Orange powder
H-bond donors / acceptors	0 / 12
TPSA	229 Å²
Synonyms	Acid Yellow 23, Yellow 5, Food Yellow 4, Aizen tartrazine, Tartraphenine, Tartran Yellow, Amacid Yellow T, Cilefa Yellow T, FD&C Yellow No. 5, A.F. Yellow No. 4, FD & C Yellow no. 5, Tartrazine FD&C Yellow #5

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H317May cause an allergic skin reaction

Precautionary statements: P280

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 1934-21-0

Tartrazine

CAS: 1934-21-0
Formula: C₁₆H₉N₄Na₃O₉S₂
MW: 534.4 g/mol

VQ-045721

Frequently asked questions

What is the CAS number of Tartrazine, GR for microscopy?

The CAS Registry Number of Tartrazine, GR for microscopy is 1934-21-0. It is also known as Acid Yellow 23, Yellow 5, Food Yellow 4.

What is the molecular formula and molecular weight of Tartrazine, GR for microscopy?

Tartrazine, GR for microscopy has the molecular formula C16H9N4Na3O9S2 and a molecular weight of 534.4 g/mol.

Which grade and pack sizes of Tartrazine, GR for microscopy can I order?

We supply Tartrazine, GR for microscopy in AR / Microscopy grade, in 25 g, 100 g, 1 kg, 5 x 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 Tartrazine, GR for microscopy?

Yes. Every lot of Tartrazine, GR for microscopy 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 Tartrazine, GR for microscopy be shipped internationally?

Yes. Tartrazine, GR for microscopy 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.