| UNSPSC Code | 12352107 |
|---|---|
| EC Index Number | 204-972-9 |
| NACRES | NA.21 |
| MDL number | MFCD00150612 |
| SMILES string | [S](=O)(=O)(O)c1cc2c(c(c1)[O-])c(cc(c2)[S](=O)(=O)O)[O-] |
| InChI | 1S/C10H8O8S2/c11-8-3-6(19(13,14)15)1-5-2-7(20(16,17)18)4-9(12)10(5)8/h1-4,11-12H,(H,13,14,15)(H,16,17,18)/p-2 |
| InChI key | HLVXFWDLRHCZEI-UHFFFAOYSA-L |
| grade | ACS reagent |
| agency | reag. Ph. Eur. |
| assay | ≥98.5% (acidimetric) |
| form | solid |
| composition | Water, 8.5-9.5% Karl Fischer |
| color | gray-white to brownish white |
| pH | 3.6 (20 °C, 10 g/L in H2O) |
| mp | >300 °C |
| bulk density | 780 kg/m3 |
| storage temp. | 2-30°C |
| Quality Level | 200 |
Answer:This configuration contains 25 g.
Answer:The acidimetric assay is at least 98.5% on an anhydrous basis.
Answer:The CAS number is 5808-22-0.
Chromotropic acid disodium salt dihydrate is an aromatic disulfonate reagent supplied for analytical use at ACS and Reag. Ph Eur quality. This 25 g configuration has an acidimetric assay of at least 98.5% on an anhydrous basis and a molecular weight of 400.29 g/mol. The solid ranges from grayish white to brownish white and contains approximately 8.5–9.5% water by Karl Fischer analysis. Chromotropic acid is used in colorimetric chemistry, including reactions for formaldehyde and nitrate sensitivity testing. In strongly acidic conditions, formaldehyde can react with chromotropic acid to produce a colored species suitable for photometric determination. The material is stored at 2–30 °C. Its defined analytical grade and compendial quality make it useful for controlled analytical and laboratory reagent preparation.
Unless otherwise stated, the minimum order amount is USD 1,000.
For orders below USD 1,000, an additional handling fee may apply, or we may arrange local delivery / local handover where available.
All quotations are subject to final confirmation, including product availability, lead time, batch information, shipping cost, and applicable export or handling requirements.
For quotation requests, please send an RFQ from website or contact:
Please send inquiries directly to us in the “To” field. Emails sent via BCC, mass mailing, or with unrelated recipients may be automatically filtered and will not be processed.
