SPADNS, extra spezial, GR

Name: SPADNS, extra spezial, GR
Brand: Vaqora Chemicals
SKU: VQ-000708

About SPADNS, extra spezial, GR

Listed under CAS 23647-14-5, SPADNS, extra spezial is a biological stain available from Vaqora Chemicals (AR grade), specified at ≥80% purity. Formula C16H9N2Na3O11S3, molecular weight 570.4 g/mol. Its systematic (IUPAC) name is trisodium, 4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate. Alternative names: Sulfanilic acid azochromotrop.

In its supplied form it is a brown to maroon brown to purple 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.

Key uses span histology and cytology staining, microscopy, clinical laboratories and indicator for titrations. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer SPADNS, extra spezial in 25 g, 500 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	SPADNS, extra spezial, GR
Catalogue No.	VQ-000708
CAS Number	23647-14-5
IUPAC name	trisodium;4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate
Molecular formula	C₁₆H₉N₂Na₃O₁₁S₃
Molecular weight	570.4 g/mol
Exact mass	569.9062
Grade	AR
Purity / assay	≥80%
HSN code	29270090
InChIKey	AEHGQXKBQBMQEK-UHFFFAOYSA-K
SMILES	C1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
PubChem CID	90221

Physical properties
Physical form	Powder
Appearance	Brown to maroon brown to purple powder
H-bond donors / acceptors	2 / 13
TPSA	262 Å²
Synonyms	Sulfanilic acid azochromotrop, 1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)chromotropic acid trisodium salt, 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-sulfophenyl)azo]-, trisodium salt, Trisodium 4,5-dihydroxy-3-(4-sulphonatophenylazo)naphthalene-2,7-disulphonate, 2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-((4-sulfophenyl)azo)-, trisodium salt, 2(4Sulfophenylazo)chromotropic acid trisodium salt, 4,5Dihydroxy32,7naphthalenedisulfonic acid trisodium salt, 4,5Dihydroxy32,7naphthalenedisulfonic acid sodium salt (1:3), Trisodium 2(psulfophenylazo)1,8dihydroxynaphthalene3,6disulfonate, 1,8Dihydroxy2(4sulfophenylazo)naphthalene3,6disulfonic acid trisodium salt

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 23647-14-5

SPADNS, extra spezial

CAS: 23647-14-5
Formula: C₁₆H₉N₂Na₃O₁₁S₃
MW: 570.4 g/mol

VQ-046640

AR

SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride)

CAS: 23647-14-5
Formula: C₁₆H₉N₂Na₃O₁₁S₃
MW: 570.4 g/mol

VQ-000709

Frequently asked questions

What is the CAS number of SPADNS, extra spezial, GR?

The CAS Registry Number of SPADNS, extra spezial, GR is 23647-14-5. It is also known as Sulfanilic acid azochromotrop, 1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt, 2-(4-Sulfophenylazo)-1,8-dihydroxy-3,6-naphthalene disulfonic acid trisodium salt.

What is the molecular formula and molecular weight of SPADNS, extra spezial, GR?

SPADNS, extra spezial, GR has the molecular formula C16H9N2Na3O11S3 and a molecular weight of 570.4 g/mol.

Which grade and pack sizes of SPADNS, extra spezial, GR can I order?

We supply SPADNS, extra spezial, GR in AR (≥80%) grade, in 25 g, 500 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with SPADNS, extra spezial, GR?

Yes. Every lot of SPADNS, extra spezial, GR 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 SPADNS, extra spezial, GR be shipped internationally?

Yes. SPADNS, extra spezial, GR 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.