Molekula
Mercaptosuccinic acid (Thiomalic 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
Mercaptosuccinic acid, also known as thiomalic acid, is a sulfur-containing organic compound used as a chelating agent and intermediate in pharmaceutical and chemical synthesis. It appears as a white to off-white crystalline powder. Available with CAS number 70-49-5, molecular formula C4H6O4S, and molecular weight 150.15 g/mol, it is stable at ambient storage conditions. This product carries a warning signal word due to its potential hazards. Molekula supplies Mercaptosuccinic 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.
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100 g — $109.10 per pack
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 | White to Off-White Powder |
| Heavy metals | Max 0.002 % |
| Chloride (Cl-) | Max 0.01 % |
| Content | >99% |
| Iron (Fe) | Max 0.005 % |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 18131235 |
| CAS Number | 70-49-5 |
| Molecular Formula | HOOCCH(SH)CH2COO |
| Molecular Weight | 150.15 |
| SMILES | C(C(C(=O)O)S)C(=O)O |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2930.90.4920 |
| Tariff Code | 2930909899 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- 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
No alternate names recorded for this product.
Frequently asked questions
What is mercaptosuccinic acid used for?
Mercaptosuccinic acid is used as a chelating agent in industrial processes and as a reagent in organic synthesis, particularly in the formation of metal complexes and pharmaceutical intermediates.
What is the chemical formula and molecular weight of mercaptosuccinic acid?
The chemical formula is C4H6O4S and the molecular weight is 150.15 g/mol.
How should mercaptosuccinic acid be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of mercaptosuccinic acid does Molekula supply?
Molekula supplies mercaptosuccinic acid in reagent grade.
Can Molekula supply mercaptosuccinic acid in bulk?
Yes, Molekula can supply mercaptosuccinic acid in bulk quantities upon request.
What documentation comes with a purchase of mercaptosuccinic acid?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
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.