Molekula
Arsenazo I trisodium
Arsenazo I trisodium is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium. It functions as a colorimetric indicator in complexometric titrations. Available in powder form with a molecular weight of 614.28 g/mol, CAS number 520-10-5, and molecular formula C16H10AsN2O11S2Na3. Store at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo I trisodium from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Arsenazo I trisodium is a chromogenic reagent used in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium. It functions as a colorimetric indicator in complexometric titrations. Available in powder form with a molecular weight of 614.28 g/mol, CAS number 520-10-5, and molecular formula C16H10AsN2O11S2Na3. Store at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo I trisodium from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Brown to red powder |
| Residue on ingnition | 22% - 26% (as sulfate) |
| Identification | Conforms to reference |
| Assay | ≥80% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 520-10-5 |
| Molecular Formula | C16H10AsN2O11S2Na3 |
| Molecular Weight | 614.28 |
| EC / UN Number | 3465 |
| REACH Code | Y110 |
| HTS Code | 2931906000 |
| Tariff Code | 2931900090 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- H301 + H311 + H331 Toxic if swallowed, in contact with skin or if inhaled
- 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
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
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 I trisodium used for?
It 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 I trisodium?
The formula is C16H10AsN2O11S2Na3 with a molecular weight of 614.28 g/mol.
How should Arsenazo I trisodium be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for Arsenazo I trisodium?
Available in analytical grade; specific purity details are provided upon request.
Can Molekula supply Arsenazo I trisodium in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with an order of Arsenazo I trisodium?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.