Molekula
3-Mercaptopropionic acid
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
3-Mercaptopropionic acid is a sulfur-containing organic compound used in pharmaceuticals, agrochemicals, and as a building block in organic synthesis. It also serves as a chain transfer agent in polymerization, as a stabilizer and antioxidant, and as an intermediate for making 3,3'-thiodipropionic acid. It is a colorless to pale yellow liquid with a pungent odor. Available in 100g, 500g, and 1kg packaging. CAS: 107-96-0, Molecular formula: C3H6O2S, Molecular weight: 106.14 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies 3-Mercaptopropionic acid 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — £33.60 per pack ex VAT · £40.32 inc. VAT
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 | Colourless or light yellow liquid |
| Assay | ≥99.0% |
| Relative density | 1.25 - 1.33 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 (6.1) |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Clear liquid |
| Odour | Strong & acrid, sulfide like odor |
| Melting Point | 16.8 °C |
| Boiling Point | 111 °C AT 15 mmHg |
| Vapour Pressure | 0.04 mmHg |
| Refractive Index | 1.4911 |
Source: PubChem CID 6514 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 89966877 |
| CAS Number | 107-96-0 |
| IUPAC Name | 3-sulfanylpropanoic acid |
| EC Number | 203-537-0 |
| Molecular Formula | C3H6O2S |
| Molecular Weight | 106.14 |
| Exact Mass | 106.0089 |
| SMILES | C(CS)C(=O)O |
| InChIKey | DKIDEFUBRARXTE-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H6O2S/c4-3(5)1-2-6/h6H,1-2H2,(H,4,5) |
| PubChem CID | 6514 |
| UN Number | UN2922 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29309049 |
| Tariff Code | 2930909550 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
-
Hazardous to the Environment
GHS09
Hazard statements
- H290 May be corrosive to metals
- H301 Toxic if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H332 Harmful if inhaled
- H401 Toxic to aquatic life
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P501 Dispose of contents/container to an approved waste disposal plant
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-Mercaptoethanecarboxylic acid
- 3-Mercaptopropanoic acid
- 3-Sulfanylpropanoic acid
- 3-Thiopropanoic acid
- 3-Thiopropionic acid
- 3MPA
- beta-Mercaptopropionic acid
- beta-Thiopropionic acid
- Propanoic acid, 3-mercapto-
- Thiohydracrylic acid
Frequently asked questions
What is 3-Mercaptopropionic acid used for?
It is commonly used as a building block in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals, and as a ligand in coordination chemistry.
What is the chemical formula and molecular weight of 3-Mercaptopropionic acid?
The formula is C3H6O2S with a molecular weight of 106.14 g/mol.
How should 3-Mercaptopropionic acid be stored?
It should be stored at ambient temperature, away from light and moisture, and kept in a tightly closed container.
What grade is available for 3-Mercaptopropionic acid?
Molekula offers 3-Mercaptopropionic acid in technical grade; custom grades are available upon request.
Can Molekula supply 3-Mercaptopropionic acid in bulk?
Yes, Molekula can supply 3-Mercaptopropionic acid in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of 3-Mercaptopropionic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided 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.