Thorin, GR
Thorin, GR (CAS 3688-92-4) supplier Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-000412.
About Thorin, GR
Zemixal supplies Thorin, GR within its laboratory Chemicals & Reagents portfolio. For your records (AR), the material is defined by CAS 3688-92-4, formula C16H11AsN2Na2O10S2 and molar mass 576.3 g/mol. It is described as dark red to very dark red to maroon powder.
Typical applications
- Titration end-point detection
- pH determination
- Analytical testing
- Indicator for titrations
Storage and safety notes
Literature values: melting point >300 °C. Solubility: soluble in water. Classified under GHS with signal word Danger and hazard statements H301, H331, H400 and H410. Read the SDS before first use. For transport it ships as UN UN 3465.
Standard pack sizes are 1 g, 5 g and 1 kg, and custom quantities are quoted on request. You receive a batch certificate of analysis and a 16-section SDS with each order. Request pricing online and we confirm availability, documentation and freight to your country.
Typical uses
- Titration end-point detection
- pH determination
- Analytical testing
- Indicator for titrations
Applications
Grade guides
Specifications and identifiers
| Product name | Thorin, GR |
|---|---|
| Catalogue number | ZX-000412 |
| CAS number | 3688-92-4 |
| IUPAC name | disodium;4-[(2-arsonophenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonate |
| Molecular formula | C16H11AsN2Na2O10S2 |
| Molar mass | 576.3 g/mol |
| Exact mass | 575.8866 |
| Grade | AR |
| Physical form | Powder |
| Appearance | Dark red to very dark red to maroon powder |
| Melting point | >300 °C |
| Solubility | Soluble in water |
| H-bond donors / acceptors | 3 / 12 |
| Topological polar surface area | 234 Ų |
| HS code | 29319090 |
| UN number | UN 3465 |
| InChIKey | DCSRPHQBFSYJNN-UHFFFAOYSA-L |
| SMILES | C1=CC=C(C(=C1)N=NC2=C3C=CC(=CC3=CC(=C2O)S(=O)(=O)[O-])S(=O)(=O)[O-])[As](=O)(O)O.[Na+].[Na+] |
| PubChem CID | 77269 |
| Synonyms | 1-(2-Arsonophenylazo)-2-naphthol-3,6-disulfonic acid disodium salt, 2-(2-Hydroxy-3,6-disulfo-1-naphthylazo)phenylarsonic acid disodium salt, 2-(3,6-Disulfo-2-hydroxy-1-naphthylazo)benzenearsonic acid disodium salt, APANS, Thoron(ol), Disodium 4-((o-arsonophenyl)azo)-3-hydroxynaphthalene-2,7-disulphonate, 4-((2-Arsonophenyl)azo)-3-hydroxy-2,7-naphthalenedisulfonic acid, disodium salt, Disodium 4-[(o-arsonophenyl)azo]-3-hydroxynaphthalene-2,7-disulphonate, 2,7-Naphthalenedisulfonic acid, 4-[(2-arsonophenyl)azo]-3-hydroxy-, disodium salt, Thorin I, Indicator Grade, 2,7Naphthalenedisulfonic acid, 4(2arsonophenyl)azo3hydro, 4((2Arsonophenyl)azo)3hydroxy2,7naphthalenedisulfonic acid |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H301Toxic if swallowed
- H331Toxic if inhaled
- H400Very toxic to aquatic life
- H410Very toxic to aquatic life with long lasting effects
Precautionary statements P261, P264, P270, P271, P273, P301 + P316, P304 + P340, P316, P321, P330, P391, 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 | |
| 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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