Arsenazo III, GR indicator
Arsenazo III, GR indicator (CAS 1668-00-4) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000318.
About Arsenazo III, GR indicator
Arsenazo III, GR indicator sits in our indicators, Chelating Agents & Test Papers section and ships worldwide from stock or short lead time. Identity at a glance (AR): CAS 1668-00-4, formula C22H18As2N4O14S2 and molar mass 776.4 g/mol. It is described as grey to dark grey or black powder.
Typical applications
- Titration end-point detection
- pH determination
- Analytical testing
Handling and storage
Classified under GHS with signal word Danger and hazard statements H301, H331 and H410. Read the SDS before first use. For transport it ships as UN UN 3465.
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. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Titration end-point detection
- pH determination
- Analytical testing
Applications
Grade guides
Specifications and identifiers
| Product name | Arsenazo III, GR indicator |
|---|---|
| Catalogue number | ZX-000318 |
| CAS number | 1668-00-4 |
| IUPAC name | 3,6-bis[(2-arsonophenyl)diazenyl]-4,5-dihydroxynaphthalene-2,7-disulfonic acid |
| Molecular formula | C22H18As2N4O14S2 |
| Molar mass | 776.4 g/mol |
| Exact mass | 775.8693 |
| Grade | AR |
| Purity / assay | ≥85% |
| Physical form | Powder |
| Appearance | Grey to dark grey or black powder |
| H-bond donors / acceptors | 8 / 18 |
| Topological polar surface area | 330 Ų |
| HS code | 29319090 |
| UN number | UN 3465 |
| InChIKey | UQHVTNUJRKELCE-UHFFFAOYSA-N |
| SMILES | C1=CC=C(C(=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=CC=CC=C4[As](=O)(O)O)O)O)[As](=O)(O)O |
| PubChem CID | 135445682 |
| Synonyms | 2,2′-(1,8-Dihydroxy-3,6-disulfonaphthylene-2,7-bisazo)bisbenzenearsonic acid, 2,7-Bis(2-arsonophenylazo)chromotropic acid, Arsenazo III sodium salt, 2,7-Bis(2-arsonophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonic acid, Arsenazo cento, 3,6-bis((E)-(2-Arsonophenyl)diazenyl)-4,5-dihydroxynaphthalene-2,7-disulfonic acid, 2,7-Naphthalenedisulfonic acid, 3,6-bis[(2-arsonophenyl)azo]-4,5-dihydroxy-, Arsenazo-III, 3,6-Bis((2-arsonophenyl)diazenyl)-4,5-dihydroxynaphthalene-2,7-disulfonic acid, 2,7-Naphthalenedisulfonic acid, 3,6-bis((2-arsonophenyl)azo)-4,5-dihydroxy-, Arsenazo(III), 2,7-Bis(2-arsonophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic 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
- H410Very toxic to aquatic life with long lasting effects
Precautionary statements P261, P273, P301 + P310, P311, 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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