THORIN
Synonym(s):1-(2-Arsonophenylazo)-2-hydroxy-3,6-naphthalene-disulfonic acid sodium salt, 2-(2-Hydroxy-3,6-disulfo-1-naphthylazo)-benzene-arsonic acid sodium salt;Thorin
- CAS NO.：3688-92-4
- Empirical Formula: C16H14AsN2NaO10S2
- Molecular Weight: 556.32
- MDL number: MFCD00003888
- EINECS: 222-993-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:13:26
What is THORIN?
Chemical properties
red to red-brown powder
Definition
A reagent for the colorimetric determination of microgram quantities of thorium.
Hazard
Toxic by ingestion.
Properties of THORIN
| Melting point: | >300°C |
| storage temp. | Store at +5°C to +30°C. |
| form | powder to crystal |
| pka | pK1:3.7;pK2:8.3;pK3:11.8 (25°C) |
| color | Orange to Brown to Dark red |
| PH | 6.1 (10g/l, H2O, 20℃) |
| Water Solubility | Soluble in water. |
| CAS DataBase Reference | 3688-92-4(CAS DataBase Reference) |
Safety information for THORIN
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Environment GHS09 |
| GHS Hazard Statements |
H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for THORIN
| InChIKey | DCSRPHQBFSYJNN-BUFQOAPZSA-L |
THORIN manufacturer
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