Molekula
Rhodanine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Rhodanine is a heterocyclic organic compound featuring a 2-thioxothiazolidin-4-one ring, a thiazolidine ring bearing a thioxo (C=S) group at position 2 and a carbonyl group at position 4, widely used in pharmaceutical synthesis, agrochemicals, and as a key reagent in analytical chemistry for metal ion detection. It also serves as a chemical intermediate in the production of cyanine dyes and phenylalanine, and has been applied as a fungicide in agriculture. It appears as a pale yellow crystalline solid with a distinct odor. Catalogue details: CAS 141-84-4, molecular formula C3H3NOS2, molecular weight 133.19 g/mol, and requires ambient storage. The substance carries a Danger signal word due to its hazardous properties. Molekula supplies Rhodanine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Pale yellow crystalline powder |
| Melting Point | 167 - 172℃ |
| Purity | ≥99.0% |
| Residue on Ignition | ≤0.05% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 168.5 °c (capillary); 170.5-171 °c (hot stage) |
Source: PubChem CID 1201546 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 16282435 |
| CAS Number | 141-84-4 |
| IUPAC Name | 2-sulfanylidene-1,3-thiazolidin-4-one |
| EC Number | 205-505-1 |
| Molecular Formula | C3H3NOS2 |
| Molecular Weight | 133.19 |
| Exact Mass | 132.9656 |
| SMILES | C1C(=O)NC(=S)S1 |
| InChIKey | KIWUVOGUEXMXSV-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H3NOS2/c5-2-1-7-3(6)4-2/h1H2,(H,4,5,6) |
| PubChem CID | 1201546 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2934.10.90.00 |
| Tariff Code | 2934100090 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H318 Causes serious eye damage
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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.
Synonyms
- 2-Thio-4-ketothiazolidine
- 2-Thioxo-4-thiazolidinone
- 2-thioxothiazolidin-4-one
- 4-Oxo-2-thioxothiazoline
- 4-Thiazolidinone, 2-thioxo-
- Rhodanic acid
- Rhodanin
- Rhodaninic acid
- Rodanin
- USAF HA-2
Frequently asked questions
What is rhodanine commonly used for?
Rhodanine is primarily used as a reagent in organic synthesis, particularly for the preparation of heterocyclic compounds, and in analytical chemistry for detecting metal ions like palladium and gold.
What is the molecular formula and molecular weight of rhodanine?
The molecular formula is C₃H₃NOS₂, and the molecular weight is 133.19 g/mol.
How should rhodanine be stored?
Store rhodanine at ambient temperature in a cool, dry place, away from incompatible substances and moisture.
What grades of rhodanine does Molekula supply?
Molekula supplies rhodanine in analytical and synthesis-grade purity—contact us for specific purity requirements.
Can Molekula supply rhodanine in bulk quantities?
Yes, we offer rhodanine in bulk for industrial and research-scale applications—please inquire for minimum order quantities and pricing.
What documentation comes with a rhodanine order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
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.