Molekula
MES monohydrate
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 monohydrate is a buffering agent commonly used in biochemical and molecular biology applications, particularly in electrophoresis and protein purification. It maintains stable pH in the range of 5.5 to 7.0. Available with a CAS number of 145224-94-8, its molecular formula is OC4H8N(CH2)2SO3H · H2O and molecular weight is 213.25 g/mol. It should be stored at ambient temperature and carries a warning signal word. Molekula supplies MES monohydrate 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.
Often bought together
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 — $115.30 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 | 8.0 - 8.9% |
| Heavy metals | ≤ 5ppm |
| Identification | Conforms to reference |
| pH | 3.5 - 4.5 |
| Residue on Ignition | ≤ 0.1% |
| pKa | 5.9 - 6.3 |
| Solubility (0.1M aq.) | Clear, Colourless Solution |
| A280, 0.5M water | ≤0.020 |
| A260, 0.5M water | ≤0.025 |
| Assay (Titration) on dried basis | ≥ 99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 12705461 |
| CAS Number | 145224-94-8 |
| IUPAC Name | 2-morpholin-4-ylethanesulfonic acid;hydrate |
| Molecular Formula | OC4H8N(CH2)2SO3H · H2O |
| Molecular Weight | 213.25 |
| Exact Mass | 213.0671 |
| SMILES | C1COCCN1CCS(=O)(=O)O.O |
| InChIKey | MIIIXQJBDGSIKL-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H13NO4S.H2O/c8-12(9,10)6-3-7-1-4-11-5-2-7;/h1-6H2,(H,8,9,10);1H2 |
| PubChem CID | 16218417 |
| REACH Code | Y113 |
| HTS Code | 2934.99.9001 |
| Tariff Code | 2934999090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- 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+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P302+352 IF ON SKIN: Wash with soap and water
- 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
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-(N-Morpholino)ethanesulfonic acid hydrate
- 2-(n-morpholino)ethanesulfonic acid monohydrate
- 2-morpholin-4-ylethanesulfonic acid;hydrate
- 2-Morpholinoethanesulfonic acid hydrate
- 2-morpholinoethanesulfonic acid monohydrate
- 4-Morpholineethanesulfonic acid hydrate (1:?)
- 4-Morpholineethanesulfonic acid xhydrate
- 4-Morpholineethanesulfonic acid, hydrate (1:1)
- 4-Morpholineethanesulfonic acid, monohydrate
- MES hydrate
Frequently asked questions
What is MES monohydrate used for?
MES monohydrate is commonly used as a buffering agent in biochemical and molecular biology applications, particularly in electrophoresis and enzyme assays.
What is the chemical formula and molecular weight of MES monohydrate?
The formula is OC4H8N(CH2)2SO3H · H2O and the molecular weight is 213.25 g/mol.
How should MES monohydrate be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of MES monohydrate is available?
Molekula supplies MES monohydrate in high-purity grade suitable for laboratory and research use.
Can Molekula supply MES monohydrate in bulk?
Yes, Molekula can supply MES monohydrate in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of MES monohydrate?
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.