SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride)
SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride) (CAS 23647-14-5) supplier Zemixal…
About SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride)
Zemixal supplies SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride) within its laboratory Chemicals & Reagents portfolio. Key data (AR): CAS 23647-14-5, formula C16H9N2Na3O11S3 and molar mass 570.4 g/mol. Expect brown to maroon brown to purple powder.
Common uses in the lab and plant
- Histology & cytology staining
- Microscopy
- Clinical laboratories
- Paints, coatings & inks
Handling and storage
Solubility: soluble in water. Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.
Standard pack sizes are 1 g, 5 g, 25 g and 1 kg, and custom quantities are quoted on request. Every shipment includes a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.
Typical uses
- Histology & cytology staining
- Microscopy
- Clinical laboratories
- Paints, coatings & inks
Applications
Grade guides
Specifications and identifiers
| Product name | SPADNS, GR (a complexometric indicator for zirconium, thorium & fluoride) |
|---|---|
| Catalogue number | ZX-000709 |
| CAS number | 23647-14-5 |
| IUPAC name | trisodium;4,5-dihydroxy-3-[(4-sulfonatophenyl)diazenyl]naphthalene-2,7-disulfonate |
| Molecular formula | C16H9N2Na3O11S3 |
| Molar mass | 570.4 g/mol |
| Exact mass | 569.9062 |
| Grade | AR |
| Purity / assay | ≥80% |
| Physical form | Powder |
| Appearance | Brown to maroon brown to purple powder |
| Solubility | Soluble in water |
| H-bond donors / acceptors | 2 / 13 |
| Topological polar surface area | 262 Ų |
| HS 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 |
| Synonyms | Sulfanilic acid azochromotrope 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, 2(4Sulfophenylazo)1,8dihydroxy3,6napthalenedisulfonic acid trisodium salt, Trisodium 4,5dihydroxy3(4sulphonatophenylazo)naphthalene2,7disulphonate, 2,7Naphthalenedisulfonic acid, 4,5dihydroxy3((4sulfophenyl)azo), trisodium salt |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Warning
- 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 1 g | Quoted on request | |
| 5 g | Quoted on request | |
| 25 g | Quoted on request | |
| 1 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
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