Molekula
Arsenazo I
Arsenazo I 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 with CAS number 66019-20-3, molecular formula C16H10AsN2Na3O11S2, and molecular weight 614.28 g/mol. Stored at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo I from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Arsenazo I 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 with CAS number 66019-20-3, molecular formula C16H10AsN2Na3O11S2, and molecular weight 614.28 g/mol. Stored at ambient temperature. Hazard classification includes signal word Danger. Molekula supplies Arsenazo I from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Brown to red powder |
| Assay | 80% min |
| Residue on Ignition | 26% max |
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 | 66019-20-3 |
| Molecular Formula | C16H10AsN2Na3O11S2 |
| Molecular Weight | 614.28 |
| SMILES | C1=CC=C(C(=C1)N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)[As](=O)(O)[O-].[Na+].[Na+].[Na+] |
| EC / UN Number | 3465 |
| REACH Code | Y110 |
| Tariff Code | 2931900090 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- H301 + H311 + H331 Toxic if swallowed, in contact with skin or if 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
- P302+352 IF ON SKIN: Wash with soap and water
- P315 Get immediate medical advice/attention
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 used for?
Arsenazo I is primarily used as a chromogenic reagent in analytical chemistry for the detection and quantification of metal ions, particularly rare earth elements and calcium.
What is the chemical formula and molecular weight of Arsenazo I?
The formula is C16H10AsN2Na3O11S2 with a molecular weight of 614.28 g/mol.
How should Arsenazo I be stored?
Store at ambient temperature; keep in a cool, dry place away from incompatible materials.
What grade of Arsenazo I is available?
Available in analytical grade; please confirm specific purity and form upon request.
Can Molekula supply Arsenazo I in bulk?
Yes, Molekula can supply Arsenazo I in bulk quantities—contact us for pricing and availability.
What documentation comes with an order of Arsenazo I?
Each order includes a Certificate of Analysis (CoA); Safety Data Sheet (SDS) is available upon request.
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.