Molekula
MES Buffer grade (2-Morpholinoethanesulfonic 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
MES Buffer grade (2-Morpholinoethanesulfonic acid) is a commonly used buffering agent in biochemical and molecular biology applications, particularly in electrophoresis and enzyme assays. It maintains stable pH in the range of 5.5 to 6.7. Available with a molecular formula of C6H13NO4S, molecular weight of 195.24 g/mol, CAS number 4432-31-9, and stable storage at ambient temperatures. Molekula supplies MES Buffer grade 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 — $188.90 per pack
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500 g — $737.60 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 crystalline powder |
| Water | ≤ 1% |
| Heavy metals | ≤ 5ppm |
| Identification | Conforms to reference |
| pH | 2.5 - 4.1 |
| Residue on Ignition | ≤ 0.1% |
| A280, 0.5M water | ≤ 0.02 |
| A260, 0.5M water | ≤ 0.04 |
| Assay (Titration) on dried basis | ≥ 99.0% |
| Solubility (0.5M in Water) | Clear, colourless solution |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 18031947 |
| CAS Number | 4432-31-9 |
| IUPAC Name | 2-morpholin-4-ylethanesulfonic acid |
| EC Number | 224-632-3 |
| Molecular Formula | C6H13NO4S |
| Molecular Weight | 195.24 |
| Exact Mass | 195.0565 |
| SMILES | C1COCCN1CCS(=O)(=O)O |
| InChIKey | SXGZJKUKBWWHRA-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H13NO4S/c8-12(9,10)6-3-7-1-4-11-5-2-7/h1-6H2,(H,8,9,10) |
| PubChem CID | 78165 |
| REACH Code | Y110 |
| HTS Code | 2934.99.9001 |
| Tariff Code | 29349990 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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-(4-Morpholinyl)ethanesulfonic acid
- 2-(N-Morpholino)ethanesulfonic acid
- 2-morpholin-4-ylethanesulfonic acid
- 2-Morpholinoethanesulfonic acid
- 4-Morpholineethanesulfonic acid
- 4-Morpholinethanesulfonic acid
- MES (buffering agent)
- MES compound
- Morpholineethanesulfonic acid
- Morpholinoethanesulfonic acid
Frequently asked questions
What is MES Buffer used for?
MES Buffer is commonly used in biochemical and molecular biology applications, such as protein purification and enzyme assays, due to its effective buffering capacity in the pH range of 5.5 to 6.7.
What is the chemical formula and molecular weight of MES Buffer?
The formula is C6H13NO4S with a molecular weight of 195.24 g/mol.
How should MES Buffer be stored?
MES Buffer should be stored at ambient temperature, protected from moisture and light.
What grade of MES Buffer does Molekula supply?
Molekula supplies MES Buffer in high-purity grade suitable for laboratory and research use.
Can Molekula supply MES Buffer in bulk?
Yes, Molekula can supply MES Buffer in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of MES Buffer?
Each order includes a Certificate of Analysis (CoA) 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.