Molekula
Arsenazo III
Arsenazo III is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium. It forms colored complexes with these ions, enabling spectrophotometric analysis. Available with CAS number 1668-00-4, molecular formula C22H18As2N4O14S2, and molecular weight 776.37 g/mol. Stored at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo III from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Arsenazo III is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium. It forms colored complexes with these ions, enabling spectrophotometric analysis. Available with CAS number 1668-00-4, molecular formula C22H18As2N4O14S2, and molecular weight 776.37 g/mol. Stored at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo III from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark red powder |
| Melting Point | ≥320℃ |
| Residue on Ignition | ≤2% |
| Effective Content | ≥70% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 1668-00-4 |
| Molecular Formula | C22H18As2N4O14S2 |
| Molecular Weight | 776.37 |
| SMILES | O=S(=O)(O)C1=CC=2C=C(C(N=NC=3C=CC=CC3[As](=O)(O)O)=C(O)C2C(O)=C1N=NC=4C=CC=CC4[As](=O)(O)O)S(=O)(=O)O |
| EC / UN Number | 3465 |
| REACH Code | Y110 |
| HTS Code | 29319030 |
| Tariff Code | 2931900090 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- H301 + H331 Toxic if swallowed or inhaled
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
- P501 Dispose of contents/container to an approved waste disposal plant
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Arsenazo III used for?
Arsenazo III is primarily used as a chromogenic reagent in analytical chemistry for detecting and quantifying metal ions, especially rare earth elements and calcium.
What is the chemical formula and molecular weight of Arsenazo III?
The formula is C22H18As2N4O14S2 with a molecular weight of 776.37 g/mol.
How should Arsenazo III be stored?
Store at ambient temperature, away from light and moisture, and keep in a tightly closed container.
What grade of Arsenazo III does Molekula supply?
Molekula supplies Arsenazo III in analytical grade, suitable for laboratory and research use.
Can Molekula supply Arsenazo III in bulk?
Yes, Molekula can supply Arsenazo III in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of Arsenazo III?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.