Sodium iodide
SIGALD/383112 - ACS reagent, ≥99.5%
CAS Number: 7681-82-5
Empirical Formula (Hill Notation): INa
Molecular Weight: 149.89
EC Number: 231-679-3
MDL Number: MFCD00003532
Linear Formula: NaI
Product Type: Chemical
| anion traces | Cl- and Br-: ≤0.01% |
| iodate (IO3-): ≤3 ppm | |
| phosphate (PO43-): ≤0.001% | |
| sulfate (SO42-): ≤0.005% | |
| assay | ≥99.5% |
| cation traces | Ba: ≤0.002% |
| Ca: ≤0.002% | |
| Fe: ≤5 ppm | |
| heavy metals (as Pb): ≤5 ppm | |
| K: ≤0.01% | |
| Mg: ≤0.001% | |
| form | chunks or granules |
| crystalline powder | |
| powder or crystals | |
| grade | ACS reagent |
| impurities | ≤0.002% N compounds |
| ≤0.01% insolubles | |
| InChI | 1S/HI.Na/h1H;/q;+1/p-1 |
| InChI key | FVAUCKIRQBBSSJ-UHFFFAOYSA |
| mp | 661 °C (lit.) |
| pH | 6.0-9.0 (25 °C, 5%) |
| Quality Level | 200 ![]() |
| SMILES string | [Na+].[I-] |
| vapor density | >1 (vs air) |
| vapor pressure | ~1 hPa ( 767 °C) |
| Application: | Sodium iodide was used as a component in the preparation of Mayer’s hematoxylin stain solution. It may be used in the following processes: • Precursor in the polymerization of butyl acrylate. • Chaotropic agent in the extraction of DNA. • Deprotecting agent in the removal of N-tert-butyloxycarbonyl group in amino acids. • Water-soluble fluorescence quenching reagent. |
| General description: | Sodium iodide is a water soluble iodide salt. |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Other Notes: | Go to Redi-Dri™ Product Listing 746371 ![]() |
| Packaging: | 100, 500, 6×500 g in poly bottle |
| Packaging: | 12 kg in fiber drum |
| Packaging: | 2.5 kg in poly bottle |
| Symbol | ![]() ![]() GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H315 - H319 - H372 - H400 |
| Precautionary statements | P260 - P264 - P273 - P302 + P352 - P305 + P351 + P338 - P314 |
| Hazard Codes | Xi,N |
| Risk Statements | 36/38-50 |
| Safety Statements | 26-61 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.5% |
| mp | 661 °C (lit.) |
| UNSPSC | 12352302 |




